Enable the test for meshgrid + fix the implementation.

.github/dependabot.yml

@@ -1,7 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: "cargo"
-    directory: "/"
-    schedule:
-      interval: "weekly"
-    open-pull-requests-limit: 5

.github/workflows/ci_cuda.yaml

@@ -5,16 +5,47 @@ on:
   pull_request:
 
 jobs:
+  start-runner:
+    name: Start self-hosted EC2 runner
+    runs-on: ubuntu-latest
+    env:
+      AWS_REGION: us-east-1
+      EC2_AMI_ID: ami-03cfed9ea28f4b002
+      EC2_INSTANCE_TYPE: g5.xlarge
+      EC2_SUBNET_ID: subnet-931b34f5,subnet-ecb993cd,subnet-943dc2d8,subnet-45371f1a,subnet-ee93e0df,subnet-fddc3dfc
+      EC2_SECURITY_GROUP: sg-030175c435ac141d6
+    outputs:
+      label: ${{ steps.start-ec2-runner.outputs.label }}
+      ec2-instance-id: ${{ steps.start-ec2-runner.outputs.ec2-instance-id }}
+    steps:
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v1
+        with:
+          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          aws-region: ${{ env.AWS_REGION }}
+      - name: Start EC2 runner
+        id: start-ec2-runner
+        uses: philschmid/philschmid-ec2-github-runner@main
+        with:
+          mode: start
+          github-token: ${{ secrets.GH_PERSONAL_ACCESS_TOKEN }}
+          ec2-image-id: ${{ env.EC2_AMI_ID }}
+          ec2-instance-type: ${{ env.EC2_INSTANCE_TYPE }}
+          subnet-id: ${{ env.EC2_SUBNET_ID }}
+          security-group-id: ${{ env.EC2_SECURITY_GROUP }}
+          aws-resource-tags: > # optional, requires additional permissions
+            [
+              {"Key": "Name", "Value": "ec2-tgi-github-runner"},
+              {"Key": "GitHubRepository", "Value": "${{ github.repository }}"}
+            ]
+
   test-cuda:
     concurrency:
       group: ${{ github.workflow }}-${{ github.job }}-${{ github.head_ref || github.run_id }}
       cancel-in-progress: true
-    runs-on:
-      group: aws-g4dn-2xlarge
-    container:
-      image: nvidia/cuda:12.3.1-devel-ubuntu22.04
-      options: --gpus 0 
-    if: ${{ github.event.pull_request.head.repo.full_name == github.event.pull_request.base.repo.full_name }}
+    needs: start-runner # required to start the main job when the runner is ready
+    runs-on: ${{ needs.start-runner.outputs.label }} # run the job on the newly created runner
     permissions:
       contents: write
       packages: write
@@ -25,10 +56,32 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
-      - name: Install dependencies
-        run: apt-get update && apt install curl build-essential libssl-dev protobuf-compiler pkg-config -y
       - name: Install Rust Stable
-        uses: actions-rust-lang/setup-rust-toolchain@v1
+        run: curl https://sh.rustup.rs -sSf | sh -s -- -y
       - uses: Swatinem/rust-cache@v2
+      - run: apt-get update -y && apt-get install libssl-dev -y
       - name: Test (cuda)
-        run: cargo test --features cuda
+        run: PATH=$PATH:/usr/local/cuda-11.8/bin/ /root/.cargo/bin/cargo test --features cuda
+  stop-runner:
+    name: Stop self-hosted EC2 runner
+    needs:
+      - start-runner
+      - test-cuda
+    runs-on: ubuntu-latest
+    env:
+      AWS_REGION: us-east-1
+    if: ${{ always() }} # required to stop the runner even if the error happened in the previous jobs
+    steps:
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v1
+        with:
+          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          aws-region: ${{ env.AWS_REGION }}
+      - name: Stop EC2 runner
+        uses: philschmid/philschmid-ec2-github-runner@main
+        with:
+          mode: stop
+          github-token: ${{ secrets.GH_PERSONAL_ACCESS_TOKEN }}
+          label: ${{ needs.start-runner.outputs.label }}
+          ec2-instance-id: ${{ needs.start-runner.outputs.ec2-instance-id }}

.github/workflows/python.yml

@@ -18,9 +18,9 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest] # For now, only test on Linux
-    steps:
+    steps: 
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v2
 
       - name: Install Rust
         uses: actions-rs/toolchain@v1
@@ -39,12 +39,6 @@ jobs:
           path: ~/.cargo/registry
           key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
 
-      - name: Install Protoc
-        uses: arduino/setup-protoc@v2
-        with:
-            version: "25.0"
-            repo-token: ${{ secrets.GITHUB_TOKEN }}
-
       - name: Install
         working-directory: ./candle-pyo3
         run: |
@@ -52,7 +46,7 @@ jobs:
           source .env/bin/activate
           pip install -U pip
           pip install pytest maturin black
-          python -m maturin develop -r --features onnx
+          python -m maturin develop -r
 
       - name: Check style
         working-directory: ./candle-pyo3
@@ -65,4 +59,4 @@ jobs:
         working-directory: ./candle-pyo3
         run: |
           source .env/bin/activate
-          python -m pytest -s -v tests
+          python -m pytest -s -v tests

.github/workflows/rust-ci.yml

@@ -1,6 +1,6 @@
-on:
+on: 
   push:
-    branches:
+    branches: 
       - main
   pull_request:
 
@@ -15,10 +15,7 @@ jobs:
         os: [ubuntu-latest, windows-latest, macOS-latest]
         rust: [stable]
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.11"
+      - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
@@ -37,13 +34,7 @@ jobs:
         os: [ubuntu-latest, windows-latest, macOS-latest]
         rust: [stable]
     steps:
-      - name: Delete huge unnecessary tools folder
-        if: runner.os == 'Linux'
-        run: rm -rf /opt/hostedtoolcache
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.11"
+      - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
@@ -58,7 +49,7 @@ jobs:
     name: Rustfmt
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
@@ -74,7 +65,7 @@ jobs:
     name: Clippy
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal

.github/workflows/trufflehog.yml

@@ -1,15 +0,0 @@
-on:
-  push:
-
-name: Secret Leaks
-
-jobs:
-  trufflehog:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Checkout code
-      uses: actions/checkout@v4
-      with:
-        fetch-depth: 0
-    - name: Secret Scanning
-      uses: trufflesecurity/trufflehog@main

.gitignore

@@ -9,10 +9,6 @@ target/
 # More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
 Cargo.lock
 
-# editor config
-.helix
-.vscode
-
 # These are backup files generated by rustfmt
 **/*.rs.bk
 
@@ -40,9 +36,3 @@ candle-wasm-examples/*/package-lock.json
 candle-wasm-examples/**/config*.json
 .DS_Store
 .idea/*
-__pycache__
-out.safetensors
-out.wav
-bria.mp3
-bria.safetensors
-bria.wav

CHANGELOG.md

@@ -63,7 +63,7 @@ This documents the main changes to the `candle` crate.
   [760](https://github.com/huggingface/candle/pull/760).
 - Add the Segment-Anything Model (SAM) as an example
   [773](https://github.com/huggingface/candle/pull/773).
-- TinyViT backbone for the segment anything example
+- TinyViT backbone for the segemnt anything example
   [787](https://github.com/huggingface/candle/pull/787).
 - Shape with holes support
   [770](https://github.com/huggingface/candle/pull/770).

Cargo.toml

@@ -7,20 +7,20 @@ members = [
     "candle-nn",
     "candle-pyo3",
     "candle-transformers",
-    "candle-wasm-examples/*",
+    "candle-wasm-examples/llama2-c",
+    "candle-wasm-examples/segment-anything",
+    "candle-wasm-examples/whisper",
+    "candle-wasm-examples/yolo",
+    "candle-wasm-examples/bert",
+    "candle-wasm-examples/phi",
+    "candle-wasm-examples/t5",
     "candle-wasm-tests",
-    "tensor-tools",
-]
-exclude = [
-   "candle-flash-attn",
-   "candle-kernels",
-   "candle-metal-kernels",
-   "candle-onnx",
 ]
+exclude = ["candle-flash-attn", "candle-kernels"]
 resolver = "2"
 
 [workspace.package]
-version = "0.8.2"
+version = "0.3.0"
 edition = "2021"
 description = "Minimalist ML framework."
 repository = "https://github.com/huggingface/candle"
@@ -29,53 +29,38 @@ categories = ["science"]
 license = "MIT OR Apache-2.0"
 
 [workspace.dependencies]
-ab_glyph = "0.2.23"
 accelerate-src = { version = "0.3.2" }
 anyhow = { version = "1", features = ["backtrace"] }
 byteorder = "1.4.3"
-candle = { path = "./candle-core", package = "candle-core", version = "0.8.2" }
-candle-datasets = { path = "./candle-datasets", version = "0.8.2" }
-candle-flash-attn = { path = "./candle-flash-attn", version = "0.8.2" }
-candle-kernels = { path = "./candle-kernels", version = "0.8.2" }
-candle-metal-kernels = { path = "./candle-metal-kernels", version = "0.8.2" }
-candle-nn = { path = "./candle-nn", version = "0.8.2" }
-candle-onnx = { path = "./candle-onnx", version = "0.8.2" }
-candle-transformers = { path = "./candle-transformers", version = "0.8.2" }
 clap = { version = "4.2.4", features = ["derive"] }
-criterion = { version = "0.5.1", default-features=false }
-cudarc = { version = "0.13.0", features = ["std", "cublas", "cublaslt", "curand", "driver", "nvrtc", "f16", "cuda-version-from-build-system", "dynamic-linking"], default-features=false }
-fancy-regex = "0.13.0"
-gemm = { version = "0.17.0", features = ["wasm-simd128-enable"] }
-hf-hub = "0.4.1"
+cudarc = { version = "0.9.14", features = ["f16"] }
+gemm = { version = "0.16.6", features = ["wasm-simd128-enable"] }
+hf-hub = "0.3.0"
 half = { version = "2.3.1", features = ["num-traits", "use-intrinsics", "rand_distr"] }
-hound = "3.5.1"
-image = { version = "0.25.2", default-features = false, features = ["jpeg", "png"] }
-imageproc = { version = "0.24.0", default-features = false }
+image = { version = "0.24.7", default-features = false, features = ["jpeg", "png"] }
+imageproc = { version = "0.23.0", default-features = false }
 intel-mkl-src = { version = "0.8.1", features = ["mkl-static-lp64-iomp"] }
 libc = { version = "0.2.147" }
 log = "0.4"
-memmap2 = { version = "0.9.3", features = ["stable_deref_trait"] }
+memmap2 = { version = "0.7.1", features = ["stable_deref_trait"] }
 num_cpus = "1.15.0"
 num-traits = "0.2.15"
-parquet = { version = "51.0.0" }
+parquet = { version = "45.0.0" }
 rand = "0.8.5"
 rand_distr = "0.4.3"
 rayon = "1.7.0"
-safetensors = "0.4.1"
+rusttype = { version = "0.9", default-features = false }
+safetensors = "0.3.1"
 serde = { version = "1.0.171", features = ["derive"] }
-serde_plain = "1.0.2"
 serde_json = "1.0.99"
 thiserror = "1"
-tokenizers = { version = "0.19.1", default-features = false }
+tokenizers = { version = "0.13.4", default-features = false }
 tracing = "0.1.37"
 tracing-chrome = "0.7.1"
 tracing-subscriber = "0.3.7"
-ug = "0.1.0"
-ug-cuda = "0.1.0"
-ug-metal = "0.1.0"
+wav = "1.0.0"
 yoke = { version = "0.7.2", features = ["derive"] }
-zip = { version = "1.1.1", default-features = false }
-metal = { version = "0.27.0", features = ["mps"]}
+zip = { version = "0.6.6", default-features = false }
 
 [profile.release-with-debug]
 inherits = "release"

README.md

@@ -2,8 +2,7 @@
 [![discord server](https://dcbadge.vercel.app/api/server/hugging-face-879548962464493619)](https://discord.gg/hugging-face-879548962464493619)
 [![Latest version](https://img.shields.io/crates/v/candle-core.svg)](https://crates.io/crates/candle-core)
 [![Documentation](https://docs.rs/candle-core/badge.svg)](https://docs.rs/candle-core)
-[![License](https://img.shields.io/github/license/base-org/node?color=blue)](https://github.com/huggingface/candle/blob/main/LICENSE-MIT)
-[![License](https://img.shields.io/badge/license-Apache%202.0-blue?style=flat-square)](https://github.com/huggingface/candle/blob/main/LICENSE-APACHE)
+![License](https://img.shields.io/crates/l/candle-core.svg)
 
 Candle is a minimalist ML framework for Rust with a focus on performance (including GPU support) 
 and ease of use. Try our online demos: 
@@ -52,43 +51,23 @@ For more advanced examples, please have a look at the following section.
 These online demos run entirely in your browser:
 - [yolo](https://huggingface.co/spaces/lmz/candle-yolo): pose estimation and
   object recognition.
-- [whisper](https://huggingface.co/spaces/lmz/candle-whisper): speech recognition.
+- [whisper](https://huggingface.co/spaces/lmz/candle-whisper): text to speech.
 - [LLaMA2](https://huggingface.co/spaces/lmz/candle-llama2): text generation.
 - [T5](https://huggingface.co/spaces/radames/Candle-T5-Generation-Wasm): text generation.
-- [Phi-1.5, and Phi-2](https://huggingface.co/spaces/radames/Candle-Phi-1.5-Wasm): text generation.
+- [Phi-v1.5](https://huggingface.co/spaces/radames/Candle-Phi-1.5-Wasm): text generation.
 - [Segment Anything Model](https://huggingface.co/spaces/radames/candle-segment-anything-wasm): Image segmentation.
-- [BLIP](https://huggingface.co/spaces/radames/Candle-BLIP-Image-Captioning): image captioning.
 
 We also provide a some command line based examples using state of the art models:
 
-- [LLaMA v1, v2, and v3](./candle-examples/examples/llama/): general LLM, includes
-  the SOLAR-10.7B variant.
+- [LLaMA and LLaMA-v2](./candle-examples/examples/llama/): general LLM.
 - [Falcon](./candle-examples/examples/falcon/): general LLM.
-- [Codegeex4](./candle-examples/examples/codegeex4-9b/): Code completion,code interpreter,web search,fuction calling,repository-level
-- [GLM4](./candle-examples/examples/glm4/): Open Multilingual Multimodal Chat LMs by THUDM
-- [Gemma v1 and v2](./candle-examples/examples/gemma/): 2b and 7b+/9b general LLMs from Google Deepmind.
-- [RecurrentGemma](./candle-examples/examples/recurrent-gemma/): 2b and 7b
-  Griffin based models from Google that mix attention with a RNN like state.
-- [Phi-1, Phi-1.5, Phi-2, and Phi-3](./candle-examples/examples/phi/): 1.3b,
-  2.7b, and 3.8b general LLMs with performance on par with 7b models.
+- [Phi-v1 and Phi-v1.5](./candle-examples/examples/phi/): a 1.3b general LLM with performance on par with LLaMA-v2 7b.
 - [StableLM-3B-4E1T](./candle-examples/examples/stable-lm/): a 3b general LLM
-  pre-trained on 1T tokens of English and code datasets. Also supports
-  StableLM-2, a 1.6b LLM trained on 2T tokens, as well as the code variants.
-- [Mamba](./candle-examples/examples/mamba/): an inference only
-  implementation of the Mamba state space model.
+  pre-trained on 1T tokens of English and code datasets.
 - [Mistral7b-v0.1](./candle-examples/examples/mistral/): a 7b general LLM with
-  better performance than all publicly available 13b models as of 2023-09-28.
-- [Mixtral8x7b-v0.1](./candle-examples/examples/mixtral/): a sparse mixture of
-  experts 8x7b general LLM with better performance than a Llama 2 70B model with
-  much faster inference.
-- [StarCoder](./candle-examples/examples/bigcode/) and
-  [StarCoder2](./candle-examples/examples/starcoder2/): LLM specialized to code generation.
-- [Qwen1.5](./candle-examples/examples/qwen/): Bilingual (English/Chinese) LLMs.
-- [RWKV v5 and v6](./candle-examples/examples/rwkv/): An RNN with transformer level LLM
-  performance.
+  performance larger than all publicly available 13b models as of 2023-09-28.
+- [StarCoder](./candle-examples/examples/bigcode/): LLM specialized to code generation.
 - [Replit-code-v1.5](./candle-examples/examples/replit-code/): a 3.3b LLM specialized for code completion.
-- [Yi-6B / Yi-34B](./candle-examples/examples/yi/): two bilingual
-  (English/Chinese) general LLMs with 6b and 34b parameters.
 - [Quantized LLaMA](./candle-examples/examples/quantized/): quantized version of
   the LLaMA model using the same quantization techniques as
   [llama.cpp](https://github.com/ggerganov/llama.cpp).
@@ -96,7 +75,7 @@ We also provide a some command line based examples using state of the art models
 <img src="https://github.com/huggingface/candle/raw/main/candle-examples/examples/quantized/assets/aoc.gif" width="600">
   
 - [Stable Diffusion](./candle-examples/examples/stable-diffusion/): text to
-  image generative model, support for the 1.5, 2.1, SDXL 1.0 and Turbo versions.
+  image generative model, support for the 1.5, 2.1, and SDXL 1.0 versions.
 
 <img src="https://github.com/huggingface/candle/raw/main/candle-examples/examples/stable-diffusion/assets/stable-diffusion-xl.jpg" width="200">
 
@@ -115,31 +94,13 @@ We also provide a some command line based examples using state of the art models
 
 <img src="https://github.com/huggingface/candle/raw/main/candle-examples/examples/segment-anything/assets/sam_merged.jpg" width="200">
 
-- [SegFormer](./candle-examples/examples/segformer/): transformer based semantic segmentation model.
 - [Whisper](./candle-examples/examples/whisper/): speech recognition model.
-- [EnCodec](./candle-examples/examples/encodec/): high-quality audio compression
-  model using residual vector quantization.
-- [MetaVoice](./candle-examples/examples/metavoice/): foundational model for
-  text-to-speech.
-- [Parler-TTS](./candle-examples/examples/parler-tts/): large text-to-speech
-  model.
-- [T5](./candle-examples/examples/t5), [Bert](./candle-examples/examples/bert/),
-  [JinaBert](./candle-examples/examples/jina-bert/) : useful for sentence embeddings.
+- [T5](./candle-examples/examples/t5), [Bert](./candle-examples/examples/bert/): useful for sentence embeddings.
 - [DINOv2](./candle-examples/examples/dinov2/): computer vision model trained
   using self-supervision (can be used for imagenet classification, depth
   evaluation, segmentation).
-- [VGG](./candle-examples/examples/vgg/),
-  [RepVGG](./candle-examples/examples/repvgg): computer vision models.
 - [BLIP](./candle-examples/examples/blip/): image to text model, can be used to
   generate captions for an image.
-- [CLIP](./candle-examples/examples/clip/): multi-model vision and language
-  model.
-- [TrOCR](./candle-examples/examples/trocr/): a transformer OCR model, with
-  dedicated submodels for hand-writing and printed recognition.
-- [Marian-MT](./candle-examples/examples/marian-mt/): neural machine translation
-  model, generates the translated text from the input text.
-- [Moondream](./candle-examples/examples/moondream/): tiny computer-vision model 
-  that can answer real-world questions about images.
 
 Run them using commands like:
 ```
@@ -155,7 +116,7 @@ There are also some wasm examples for whisper and
 [whisper](https://huggingface.co/spaces/lmz/candle-whisper),
 [llama2](https://huggingface.co/spaces/lmz/candle-llama2),
 [T5](https://huggingface.co/spaces/radames/Candle-T5-Generation-Wasm),
-[Phi-1.5, and Phi-2](https://huggingface.co/spaces/radames/Candle-Phi-1.5-Wasm),
+[Phi-v1.5](https://huggingface.co/spaces/radames/Candle-Phi-1.5-Wasm),
 [Segment Anything Model](https://huggingface.co/spaces/radames/candle-segment-anything-wasm).
 
 For LLaMA2, run the following command to retrieve the weight files and start a
@@ -172,24 +133,10 @@ And then head over to
 <!--- ANCHOR: useful_libraries --->
 
 ## Useful External Resources
-- [`candle-tutorial`](https://github.com/ToluClassics/candle-tutorial): A
+- [`candle-tutorial`](https://github.com/ToluClassics/candle-tutorial): a
   very detailed tutorial showing how to convert a PyTorch model to Candle.
-- [`candle-lora`](https://github.com/EricLBuehler/candle-lora): Efficient and
-  ergonomic LoRA implementation for Candle. `candle-lora` has      
-  out-of-the-box LoRA support for many models from Candle, which can be found
-  [here](https://github.com/EricLBuehler/candle-lora/tree/master/candle-lora-transformers/examples).
-- [`optimisers`](https://github.com/KGrewal1/optimisers): A collection of optimisers
-  including SGD with momentum, AdaGrad, AdaDelta, AdaMax, NAdam, RAdam, and RMSprop.
-- [`candle-vllm`](https://github.com/EricLBuehler/candle-vllm): Efficient platform for inference and
-  serving local LLMs including an OpenAI compatible API server.
-- [`candle-ext`](https://github.com/mokeyish/candle-ext): An extension library to Candle that provides PyTorch functions not currently available in Candle.
-- [`candle-coursera-ml`](https://github.com/vishpat/candle-coursera-ml): Implementation of ML algorithms from Coursera's [Machine Learning Specialization](https://www.coursera.org/specializations/machine-learning-introduction) course.
-- [`kalosm`](https://github.com/floneum/floneum/tree/master/interfaces/kalosm): A multi-modal meta-framework in Rust for interfacing with local pre-trained models with support for controlled generation, custom samplers, in-memory vector databases, audio transcription, and more.
-- [`candle-sampling`](https://github.com/EricLBuehler/candle-sampling): Sampling techniques for Candle.
-- [`gpt-from-scratch-rs`](https://github.com/jeroenvlek/gpt-from-scratch-rs): A port of Andrej Karpathy's _Let's build GPT_ tutorial on YouTube showcasing the Candle API on a toy problem.
-- [`candle-einops`](https://github.com/tomsanbear/candle-einops): A pure rust implementation of the python [einops](https://github.com/arogozhnikov/einops) library.
-- [`atoma-infer`](https://github.com/atoma-network/atoma-infer): A Rust library for fast inference at scale, leveraging FlashAttention2 for efficient attention computation, PagedAttention for efficient KV-cache memory management, and multi-GPU support. It is OpenAI api compatible.
-- [`llms-from-scratch-rs`](https://github.com/nerdai/llms-from-scratch-rs): A comprehensive Rust translation of the code from Sebastian Raschka's Build an LLM from Scratch book.
+- [`candle-lora`](https://github.com/EricLBuehler/candle-lora): a LoRA implementation
+  that conforms to the official `peft` implementation.
 
 If you have an addition to this list, please submit a pull request.
 
@@ -208,46 +155,25 @@ If you have an addition to this list, please submit a pull request.
     - WASM support, run your models in a browser.
 - Included models.
     - Language Models.
-        - LLaMA v1, v2, and v3 with variants such as SOLAR-10.7B.
+        - LLaMA v1 and v2.
         - Falcon.
-        - StarCoder, StarCoder2.
-        - Phi 1, 1.5, 2, and 3.
-        - Mamba, Minimal Mamba
-        - Gemma v1 2b and 7b+, v2 2b and 9b.
+        - StarCoder.
+        - Phi v1.5.
         - Mistral 7b v0.1.
-        - Mixtral 8x7b v0.1.
-        - StableLM-3B-4E1T, StableLM-2-1.6B, Stable-Code-3B.
+        - StableLM-3B-4E1T.
         - Replit-code-v1.5-3B.
+        - T5.
         - Bert.
-        - Yi-6B and Yi-34B.
-        - Qwen1.5, Qwen1.5 MoE.
-        - RWKV v5 and v6.
-    - Quantized LLMs.
-        - Llama 7b, 13b, 70b, as well as the chat and code variants.
-        - Mistral 7b, and 7b instruct.
-        - Mixtral 8x7b.
-        - Zephyr 7b a and b (Mistral-7b based).
-        - OpenChat 3.5 (Mistral-7b based).
-    - Text to text.
-        - T5 and its variants: FlanT5, UL2, MADLAD400 (translation), CoEdit (Grammar correction).
-        - Marian MT (Machine Translation).
+    - Whisper (multi-lingual support).
     - Text to image.
         - Stable Diffusion v1.5, v2.1, XL v1.0.
         - Wurstchen v2.
     - Image to text.
         - BLIP.
-        - TrOCR.
-    - Audio.
-        - Whisper, multi-lingual speech-to-text.
-        - EnCodec, audio compression model.
-        - MetaVoice-1B, text-to-speech model.
-        - Parler-TTS, text-to-speech model.
     - Computer Vision Models.
-        - DINOv2, ConvMixer, EfficientNet, ResNet, ViT, VGG, RepVGG, ConvNeXT,
-          ConvNeXTv2, MobileOne, EfficientVit (MSRA), MobileNetv4, Hiera, FastViT.
+        - DINOv2, ConvMixer, EfficientNet, ResNet, ViT.
         - yolo-v3, yolo-v8.
         - Segment-Anything Model (SAM).
-        - SegFormer.
 - File formats: load models from safetensors, npz, ggml, or PyTorch files.
 - Serverless (on CPU), small and fast deployments.
 - Quantization support using the llama.cpp quantized types.
@@ -284,7 +210,6 @@ Cheatsheet:
 - [candle-datasets](./candle-datasets/): Datasets and data loaders.
 - [candle-transformers](./candle-transformers): transformers-related utilities.
 - [candle-flash-attn](./candle-flash-attn): Flash attention v2 layer.
-- [candle-onnx](./candle-onnx/): ONNX model evaluation.
 
 ## FAQ
 
@@ -384,9 +309,9 @@ git submodule update --init
 /usr/include/c++/11/bits/std_function.h:530:146: error: parameter packs not expanded with ‘...’:
 ```
 
-This is a bug in gcc-11 triggered by the Cuda compiler. To fix this, install a different, supported gcc version - for example gcc-10, and specify the path to the compiler in the NVCC_CCBIN environment variable.
+This is a bug in gcc-11 triggered by the Cuda compiler. To fix this, install a different, supported gcc version - for example gcc-10, and specify the path to the compiler in the CANDLE_NVCC_CCBIN environment variable.
 ```
-env NVCC_CCBIN=/usr/lib/gcc/x86_64-linux-gnu/10 cargo ...
+env CANDLE_NVCC_CCBIN=/usr/lib/gcc/x86_64-linux-gnu/10 cargo ...
 ```
 
 #### Linking error on windows when running rustdoc or mdbook tests
@@ -416,10 +341,3 @@ This may be caused by the models being loaded from `/mnt/c`, more details on
 
 You can set `RUST_BACKTRACE=1` to be provided with backtraces when a candle
 error is generated.
-
-#### CudaRC error
-
-If you encounter an error like this one `called `Result::unwrap()` on an `Err` value: LoadLibraryExW { source: Os { code: 126, kind: Uncategorized, message: "The specified module could not be found." } }` on windows. To fix copy and rename these 3 files (make sure they are in path). The paths depend on your cuda version.
-`c:\Windows\System32\nvcuda.dll` -> `cuda.dll`
-`c:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v12.4\bin\cublas64_12.dll` -> `cublas.dll`
-`c:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v12.4\bin\curand64_10.dll` -> `curand.dll`

candle-book/Cargo.toml

@@ -11,11 +11,11 @@ readme = "README.md"
 
 [dependencies]
 accelerate-src = { workspace = true, optional = true }
-candle = { workspace = true }
-candle-datasets = { workspace = true }
-candle-nn = { workspace = true }
-candle-transformers = { workspace = true }
-candle-flash-attn = { workspace = true, optional = true }
+candle = { path = "../candle-core", version = "0.3.0", package = "candle-core" }
+candle-datasets = { path = "../candle-datasets", version = "0.3.0" }
+candle-nn = { path = "../candle-nn", version = "0.3.0" }
+candle-transformers = { path = "../candle-transformers", version = "0.3.0" }
+candle-flash-attn = { path = "../candle-flash-attn", version = "0.3.0", optional = true }
 safetensors = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
@@ -25,7 +25,7 @@ cudarc = { workspace = true, optional = true }
 half = { workspace = true, optional = true }
 image = { workspace = true, optional = true }
 anyhow = { workspace = true }
-tokio = "1.43.0"
+tokio = "1.29.1"
 
 [dev-dependencies]
 byteorder = { workspace = true }
@@ -37,6 +37,7 @@ tokenizers = { workspace = true, features = ["onig"] }
 tracing = { workspace = true }
 tracing-chrome = { workspace = true }
 tracing-subscriber = { workspace = true }
+wav = { workspace = true }
 # Necessary to disambiguate with tokio in wasm examples which are 1.28.1
 parquet = { workspace = true }
 image = { workspace = true }

candle-book/src/lib.rs

@@ -28,7 +28,6 @@ let weights = candle::safetensors::load(weights_filename, &Device::Cpu).unwrap()
     #[rustfmt::skip]
     #[test]
     fn book_hub_2() {
-        {
 // ANCHOR: book_hub_2
 use candle::Device;
 use hf_hub::api::sync::Api;
@@ -46,10 +45,9 @@ let weights = candle::safetensors::load_buffer(&mmap[..], &Device::Cpu).unwrap()
         assert_eq!(weights.len(), 206);
     }
 
-    // #[rustfmt::skip]
-    // #[test]
-    // fn book_hub_3() {
-    {
+    #[rustfmt::skip]
+    #[test]
+    fn book_hub_3() {
 // ANCHOR: book_hub_3
 use candle::{DType, Device, Tensor};
 use hf_hub::api::sync::Api;
@@ -81,7 +79,7 @@ let mut tp_shape = view.shape().to_vec();
 let size = tp_shape[0];
 
 if size % world_size != 0 {
-    panic!("The dimension is not divisible by `world_size`");
+    panic!("The dimension is not divisble by `world_size`");
 }
 let block_size = size / world_size;
 let start = rank * block_size;
@@ -104,10 +102,9 @@ let tp_tensor = Tensor::from_raw_buffer(&raw, dtype, &tp_shape, &Device::Cpu).un
         assert_eq!(view.shape(), &[768, 768]);
         assert_eq!(tp_tensor.dims(), &[192, 768]);
     }
-}
 
-    #[allow(unused)]
     #[rustfmt::skip]
+    #[test]
     fn book_training_1() -> Result<()>{
 // ANCHOR: book_training_1
 use hf_hub::{api::sync::Api, Repo, RepoType};

candle-core/Cargo.toml

@@ -12,9 +12,7 @@ readme = "README.md"
 [dependencies]
 accelerate-src = { workspace = true, optional = true }
 byteorder = { workspace = true }
-candle-kernels = { workspace = true, optional = true }
-candle-metal-kernels = { workspace = true, optional = true }
-metal = { workspace = true, optional = true}
+candle-kernels = { path = "../candle-kernels", version = "0.3.0", optional = true }
 cudarc = { workspace = true, optional = true }
 gemm = { workspace = true }
 half = { workspace = true }
@@ -28,30 +26,16 @@ rand_distr = { workspace = true }
 rayon = { workspace = true }
 safetensors = { workspace = true }
 thiserror = { workspace = true }
-ug = { workspace = true }
-ug-cuda = { workspace = true, optional = true }
-ug-metal = { workspace = true, optional = true }
 yoke = { workspace = true }
 zip = { workspace = true }
 
 [dev-dependencies]
 anyhow = { workspace = true }
 clap = { workspace = true }
-criterion = { workspace = true }
-
 
 [features]
 default = []
-cuda = ["cudarc", "dep:candle-kernels", "dep:ug-cuda"]
+cuda = ["cudarc", "dep:candle-kernels"]
 cudnn = ["cuda", "cudarc/cudnn"]
 mkl = ["dep:libc", "dep:intel-mkl-src"]
 accelerate = ["dep:libc", "dep:accelerate-src"]
-metal = ["dep:metal", "dep:candle-metal-kernels", "dep:ug-metal"]
-
-[[bench]]
-name = "bench_main"
-harness = false
-
-[[example]]
-name = "metal_basics"
-required-features = ["metal"]

candle-core/benches/bench_main.rs

@@ -1,12 +0,0 @@
-mod benchmarks;
-
-use criterion::criterion_main;
-criterion_main!(
-    benchmarks::affine::benches,
-    benchmarks::matmul::benches,
-    benchmarks::random::benches,
-    benchmarks::where_cond::benches,
-    benchmarks::conv_transpose2d::benches,
-    benchmarks::qmatmul::benches,
-    benchmarks::unary::benches
-);

candle-core/benches/benchmarks/affine.rs

@@ -1,43 +0,0 @@
-use crate::benchmarks::{BenchDevice, BenchDeviceHandler};
-use candle_core::{DType, Device, Tensor};
-use criterion::{black_box, criterion_group, Criterion, Throughput};
-use std::time::Instant;
-
-fn run(a: &Tensor) {
-    a.affine(12.34, 56.78).unwrap();
-}
-
-fn run_affine_benchmark(c: &mut Criterion, device: &Device, dtype: DType, name: &str) {
-    let b = 1;
-    let m = 1024;
-    let k = 1024;
-
-    let tensor = Tensor::zeros((b, m, k), dtype, device).unwrap();
-
-    let flops = b * m * k * dtype.size_in_bytes();
-
-    let mut group = c.benchmark_group(device.bench_name(name));
-    group.throughput(Throughput::Bytes(flops as u64));
-    group.bench_function("iter", move |b| {
-        b.iter_custom(|iters| {
-            let start = Instant::now();
-            for _i in 0..iters {
-                run(black_box(&tensor));
-            }
-            device.sync().unwrap();
-            start.elapsed()
-        })
-    });
-    group.finish();
-}
-
-fn criterion_benchmark(c: &mut Criterion) {
-    let handler = BenchDeviceHandler::new().unwrap();
-    for device in handler.devices {
-        run_affine_benchmark(c, &device, DType::F32, "affine_f32");
-        run_affine_benchmark(c, &device, DType::F16, "affine_f16");
-        run_affine_benchmark(c, &device, DType::BF16, "affine_bf16");
-    }
-}
-
-criterion_group!(benches, criterion_benchmark);

candle-core/benches/benchmarks/conv_transpose2d.rs

@@ -1,59 +0,0 @@
-use crate::benchmarks::{BenchDevice, BenchDeviceHandler};
-use candle_core::{DType, Device, Tensor};
-use criterion::{black_box, criterion_group, Criterion, Throughput};
-use std::time::Instant;
-
-fn run(
-    x: &Tensor,
-    k: &Tensor,
-    padding: usize,
-    output_padding: usize,
-    stride: usize,
-    dilation: usize,
-) {
-    x.conv_transpose2d(k, padding, output_padding, stride, dilation)
-        .unwrap();
-}
-
-fn run_benchmark(c: &mut Criterion, device: &Device, dtype: DType, name: &str) {
-    let t = Tensor::arange(0.0f32, 10000.0, device)
-        .unwrap()
-        .reshape((1, 4, 50, 50))
-        .unwrap()
-        .to_dtype(dtype)
-        .unwrap();
-
-    let kernel = Tensor::arange(0.0f32, 100.0, device)
-        .unwrap()
-        .reshape((4, 1, 5, 5))
-        .unwrap()
-        .to_dtype(dtype)
-        .unwrap();
-
-    let flops = t.dims().iter().product::<usize>() * dtype.size_in_bytes();
-
-    let mut group = c.benchmark_group(device.bench_name(name));
-    group.throughput(Throughput::Bytes(flops as u64));
-    group.bench_function("iter", move |b| {
-        b.iter_custom(|iters| {
-            let start = Instant::now();
-            for _i in 0..iters {
-                run(black_box(&t), black_box(&kernel), 1, 0, 1, 2);
-            }
-            device.sync().unwrap();
-            start.elapsed()
-        })
-    });
-    group.finish();
-}
-
-fn criterion_benchmark(c: &mut Criterion) {
-    let handler = BenchDeviceHandler::new().unwrap();
-    for device in handler.devices {
-        run_benchmark(c, &device, DType::F32, "conv_transpose2d_f32");
-        run_benchmark(c, &device, DType::F16, "conv_transpose2d_f16");
-        run_benchmark(c, &device, DType::BF16, "conv_transpose2d_bf16");
-    }
-}
-
-criterion_group!(benches, criterion_benchmark);

candle-core/benches/benchmarks/matmul.rs

@@ -1,44 +0,0 @@
-use crate::benchmarks::{BenchDevice, BenchDeviceHandler};
-use candle_core::{DType, Device, Tensor};
-use criterion::{black_box, criterion_group, Criterion, Throughput};
-use std::time::Instant;
-
-fn run(a: &Tensor, b: &Tensor) {
-    a.matmul(&b.t().unwrap()).unwrap();
-}
-
-fn run_bench(c: &mut Criterion, device: &Device) {
-    let b = 1;
-    let m = 1;
-    let n = 2048;
-    let k = 2048;
-
-    let dtype = DType::F32;
-    let lhs = Tensor::zeros((b, m, k), dtype, device).unwrap();
-    let rhs = Tensor::zeros((b, n, k), dtype, device).unwrap();
-
-    let flops = b * m * n * k;
-
-    let mut group = c.benchmark_group(device.bench_name("matmul"));
-    group.throughput(Throughput::Bytes(flops as u64));
-    group.bench_function("iter", move |b| {
-        b.iter_custom(|iters| {
-            let start = Instant::now();
-            for _i in 0..iters {
-                run(black_box(&lhs), black_box(&rhs));
-            }
-            device.sync().unwrap();
-            start.elapsed()
-        })
-    });
-    group.finish();
-}
-
-fn criterion_benchmark(c: &mut Criterion) {
-    let handler = BenchDeviceHandler::new().unwrap();
-    for device in handler.devices {
-        run_bench(c, &device);
-    }
-}
-
-criterion_group!(benches, criterion_benchmark);

candle-core/benches/benchmarks/mod.rs

@@ -1,69 +0,0 @@
-pub(crate) mod affine;
-pub(crate) mod conv_transpose2d;
-pub(crate) mod matmul;
-pub(crate) mod qmatmul;
-pub(crate) mod random;
-pub(crate) mod unary;
-pub(crate) mod where_cond;
-
-use candle_core::{Device, Result};
-
-pub(crate) trait BenchDevice {
-    fn sync(&self) -> Result<()>;
-
-    fn bench_name<S: Into<String>>(&self, name: S) -> String;
-}
-
-impl BenchDevice for Device {
-    fn sync(&self) -> Result<()> {
-        match self {
-            Device::Cpu => Ok(()),
-            Device::Cuda(device) => {
-                #[cfg(feature = "cuda")]
-                return Ok(device.synchronize()?);
-                #[cfg(not(feature = "cuda"))]
-                panic!("Cuda device without cuda feature enabled: {:?}", device)
-            }
-            Device::Metal(device) => {
-                #[cfg(feature = "metal")]
-                return Ok(device.wait_until_completed()?);
-                #[cfg(not(feature = "metal"))]
-                panic!("Metal device without metal feature enabled: {:?}", device)
-            }
-        }
-    }
-
-    fn bench_name<S: Into<String>>(&self, name: S) -> String {
-        match self {
-            Device::Cpu => {
-                let cpu_type = if cfg!(feature = "accelerate") {
-                    "accelerate"
-                } else if cfg!(feature = "mkl") {
-                    "mkl"
-                } else {
-                    "cpu"
-                };
-                format!("{}_{}", cpu_type, name.into())
-            }
-            Device::Cuda(_) => format!("cuda_{}", name.into()),
-            Device::Metal(_) => format!("metal_{}", name.into()),
-        }
-    }
-}
-
-struct BenchDeviceHandler {
-    devices: Vec<Device>,
-}
-
-impl BenchDeviceHandler {
-    pub fn new() -> Result<Self> {
-        let mut devices = Vec::new();
-        if cfg!(feature = "metal") {
-            devices.push(Device::new_metal(0)?);
-        } else if cfg!(feature = "cuda") {
-            devices.push(Device::new_cuda(0)?);
-        }
-        devices.push(Device::Cpu);
-        Ok(Self { devices })
-    }
-}

candle-core/benches/benchmarks/qmatmul.rs

@@ -1,72 +0,0 @@
-use crate::benchmarks::{BenchDevice, BenchDeviceHandler};
-use candle_core::{
-    quantized::{self, GgmlDType, QMatMul},
-    Device, Module, Tensor,
-};
-use criterion::{black_box, criterion_group, Criterion, Throughput};
-use std::time::Instant;
-
-fn run(matmul: &QMatMul, x: &Tensor) {
-    matmul.forward(x).unwrap();
-}
-
-fn run_bench(c: &mut Criterion, device: &Device, dtype: GgmlDType) {
-    let b = 1;
-    let m = 1;
-    let n = 1024;
-    let k = 1024;
-
-    let lhs = (0..(m * k))
-        .map(|v| v as f32 / (m * k) as f32)
-        .collect::<Vec<_>>();
-    let rhs = (0..(k * n))
-        .map(|v| v as f32 / (n * k) as f32)
-        .collect::<Vec<_>>();
-
-    let lhs = Tensor::from_slice(&lhs, (m, k), device).unwrap();
-    let rhs = Tensor::from_slice(&rhs, (k, n), device).unwrap();
-
-    let qtensor = quantized::QTensor::quantize(&rhs.t().unwrap(), dtype).unwrap();
-    let matmul = quantized::QMatMul::from_qtensor(qtensor).unwrap();
-
-    let flops = b * m * n * k;
-
-    let mut group = c.benchmark_group(device.bench_name(format!("qmatmul_{:?}", dtype)));
-    group.sample_size(200);
-    group.throughput(Throughput::Bytes(flops as u64));
-    group.bench_function("iter", move |b| {
-        b.iter_custom(|iters| {
-            let start = Instant::now();
-            for _i in 0..iters {
-                run(black_box(&matmul), black_box(&lhs));
-            }
-            device.sync().unwrap();
-            start.elapsed()
-        })
-    });
-    group.finish();
-}
-
-fn criterion_benchmark(c: &mut Criterion) {
-    let handler = BenchDeviceHandler::new().unwrap();
-    for device in handler.devices {
-        for dtype in [
-            GgmlDType::F32,
-            GgmlDType::F16,
-            GgmlDType::Q4_0,
-            GgmlDType::Q4_1,
-            GgmlDType::Q5_0,
-            GgmlDType::Q5_1,
-            GgmlDType::Q8_0,
-            GgmlDType::Q2K,
-            GgmlDType::Q3K,
-            GgmlDType::Q4K,
-            GgmlDType::Q5K,
-            GgmlDType::Q6K,
-        ] {
-            run_bench(c, &device, dtype);
-        }
-    }
-}
-
-criterion_group!(benches, criterion_benchmark);

candle-core/benches/benchmarks/random.rs

@@ -1,63 +0,0 @@
-use crate::benchmarks::{BenchDevice, BenchDeviceHandler};
-use candle_core::{DType, Device, Tensor};
-use criterion::{black_box, criterion_group, Criterion, Throughput};
-use std::time::Instant;
-
-fn rand_uniform(a: &Tensor) {
-    a.rand_like(-1.0, 123.0).unwrap();
-}
-
-fn rand_normal(a: &Tensor) {
-    a.randn_like(100.0, 15.0).unwrap();
-}
-
-fn run_random_bench(c: &mut Criterion, device: &Device) {
-    let b = 1;
-
-    let rows = 2048;
-    let cols = 2048;
-
-    let dtype = DType::F32;
-    let tensor = Tensor::zeros((b, rows, cols), dtype, device).unwrap();
-
-    let flops = b * rows * cols * dtype.size_in_bytes();
-
-    let mut group = c.benchmark_group(device.bench_name("random_uniform"));
-    group.throughput(Throughput::Bytes(flops as u64));
-    group.bench_function("iter", move |benches| {
-        benches.iter_custom(|iters| {
-            let start = Instant::now();
-            for _i in 0..iters {
-                rand_uniform(black_box(&tensor));
-            }
-            device.sync().unwrap();
-            start.elapsed()
-        })
-    });
-    group.finish();
-
-    let tensor = Tensor::zeros((b, rows, cols), dtype, device).unwrap();
-
-    let mut group = c.benchmark_group(device.bench_name("random_normal"));
-    group.throughput(Throughput::Bytes(flops as u64));
-    group.bench_function("iter", move |benches| {
-        benches.iter_custom(|iters| {
-            let start = Instant::now();
-            for _i in 0..iters {
-                rand_normal(black_box(&tensor));
-            }
-            device.sync().unwrap();
-            start.elapsed()
-        })
-    });
-    group.finish();
-}
-
-fn criterion_benchmark(c: &mut Criterion) {
-    let handler = BenchDeviceHandler::new().unwrap();
-    for device in handler.devices {
-        run_random_bench(c, &device);
-    }
-}
-
-criterion_group!(benches, criterion_benchmark);

candle-core/benches/benchmarks/unary.rs

@@ -1,49 +0,0 @@
-use crate::benchmarks::{BenchDevice, BenchDeviceHandler};
-use candle_core::{DType, Device, Tensor};
-use criterion::{black_box, criterion_group, Criterion, Throughput};
-use std::time::Instant;
-
-fn run(a: &Tensor) {
-    a.sqrt().unwrap();
-}
-
-fn run_unary_benchmark(c: &mut Criterion, device: &Device, dtype: DType, name: &str) {
-    let b = 1;
-    let m = 1024;
-    let k = 1024;
-
-    let tensor = Tensor::arange(0.0f32, (b * m * k) as f32, device)
-        .unwrap()
-        .to_dtype(dtype)
-        .unwrap()
-        .reshape((b, m, k))
-        .unwrap();
-
-    let flops = b * m * k * dtype.size_in_bytes();
-
-    let mut group = c.benchmark_group(device.bench_name(name));
-    group.throughput(Throughput::Bytes(flops as u64));
-    group.bench_function("iter", move |b| {
-        b.iter_custom(|iters| {
-            let start = Instant::now();
-            for _i in 0..iters {
-                run(black_box(&tensor));
-            }
-            device.sync().unwrap();
-            start.elapsed()
-        })
-    });
-    group.finish();
-}
-
-fn criterion_benchmark(c: &mut Criterion) {
-    let handler = BenchDeviceHandler::new().unwrap();
-    for device in handler.devices {
-        for dtype in [DType::F32, DType::BF16, DType::F16] {
-            let name = format!("sqrt_{:?}", dtype);
-            run_unary_benchmark(c, &device, dtype, &name);
-        }
-    }
-}
-
-criterion_group!(benches, criterion_benchmark);

candle-core/benches/benchmarks/where_cond.rs

@@ -1,64 +0,0 @@
-use crate::benchmarks::{BenchDevice, BenchDeviceHandler};
-use candle_core::{DType, Device, Tensor};
-use criterion::{black_box, criterion_group, Criterion, Throughput};
-use std::time::Instant;
-
-fn run(a: &Tensor, b: &Tensor, c: &Tensor) {
-    a.where_cond(b, c).unwrap();
-}
-
-const fn create_cond_arr<const N: usize>() -> [u8; N] {
-    let mut arr = [0u8; N];
-    let mut i = 0;
-    while i < N {
-        arr[i] = (i % 2) as u8;
-        i += 1;
-    }
-    arr
-}
-
-const B: usize = 1;
-const M: usize = 1024;
-const K: usize = 1024;
-const SIZE: usize = B * M * K;
-
-const DATA: [u8; SIZE] = create_cond_arr::<SIZE>();
-
-fn run_where_cond_benchmark(c: &mut Criterion, device: &Device, dtype: DType, name: &str) {
-    let tensor = Tensor::from_slice(DATA.as_slice(), (B, M, K), device).unwrap();
-    let on_true = Tensor::ones((B, M, K), dtype, device).unwrap();
-    let on_false = Tensor::zeros((B, M, K), dtype, device).unwrap();
-
-    let elements = B * M * K;
-    // E.g. 2 f32 tensors + 1 u8 tensor
-    let flops = (2 * elements * dtype.size_in_bytes()) + elements;
-
-    let mut group = c.benchmark_group(device.bench_name(name));
-    group.throughput(Throughput::Bytes(flops as u64));
-    group.bench_function("iter", move |b| {
-        b.iter_custom(|iters| {
-            let start = Instant::now();
-            for _i in 0..iters {
-                run(
-                    black_box(&tensor),
-                    black_box(&on_true),
-                    black_box(&on_false),
-                );
-            }
-            device.sync().unwrap();
-            start.elapsed()
-        })
-    });
-    group.finish();
-}
-
-fn criterion_benchmark(c: &mut Criterion) {
-    let device = BenchDeviceHandler::new().unwrap();
-    for d in device.devices {
-        run_where_cond_benchmark(c, &d, DType::F32, "where_cond_f32");
-        run_where_cond_benchmark(c, &d, DType::BF16, "where_cond_bf16");
-        run_where_cond_benchmark(c, &d, DType::F16, "where_cond_f16");
-    }
-}
-
-criterion_group!(benches, criterion_benchmark);

candle-core/examples/basics.rs

@@ -8,10 +8,11 @@ use anyhow::Result;
 use candle_core::{Device, Tensor};
 
 fn main() -> Result<()> {
-    let a = Tensor::new(&[[0.0f32, 1.0, 2.0], [3.0, 4.0, 5.0]], &Device::Cpu)?;
-    let b = Tensor::new(&[[88.0f32, 99.0]], &Device::Cpu)?;
-    let new_a = a.slice_scatter(&b, 1, 2)?;
-    assert_eq!(a.to_vec2::<f32>()?, [[0.0, 1.0, 2.0], [3.0, 4.0, 5.0]]);
-    assert_eq!(new_a.to_vec2::<f32>()?, [[0.0, 1.0, 2.0], [3.0, 4.0, 5.0]]);
+    let inp = Tensor::randn(0f32, 1., (2, 320, 96, 96), &Device::Cpu)?;
+    let w = Tensor::randn(0f32, 1., (320, 320, 3, 3), &Device::Cpu)?;
+    let start = std::time::Instant::now();
+    let res = inp.conv2d(&w, 0, 1, 1, 1)?;
+    println!("{:?}", start.elapsed());
+    println!("{res:?}");
     Ok(())
 }

candle-core/examples/cuda_basics.rs

@@ -9,25 +9,21 @@ use candle_core::{Device, Tensor};
 
 fn main() -> Result<()> {
     let device = Device::new_cuda(0)?;
-    let x = Tensor::randn(0f32, 1.0, (8 * 4096, 8 * 4096), &device)?
-        .to_dtype(candle_core::DType::BF16)?;
-    candle_core::cuda::set_gemm_reduced_precision_f32(false);
-    candle_core::cuda::set_gemm_reduced_precision_bf16(false);
-    let _x1 = x.matmul(&x)?;
-    drop(_x1);
-    let start_time = std::time::Instant::now();
-    let _x1 = x.matmul(&x)?;
-    device.synchronize()?;
-    println!("fp32: {:?}", start_time.elapsed());
-    drop(_x1);
-    candle_core::cuda::set_gemm_reduced_precision_f32(true);
-    candle_core::cuda::set_gemm_reduced_precision_bf16(true);
-    let _x1 = x.matmul(&x)?;
-    drop(_x1);
-    let start_time = std::time::Instant::now();
-    let _x1 = x.matmul(&x)?;
-    device.synchronize()?;
-    println!("tf32: {:?}", start_time.elapsed());
-    drop(_x1);
+    let in_t = Tensor::rand(-1f32, 1f32, (1, 3, 12, 7), &device)?;
+    let k_t = Tensor::rand(-1f32, 1f32, (6, 3, 1, 1), &device)?;
+    let out_t = in_t.conv2d(&k_t, 0, 1, 1, 1)?;
+    println!("{out_t}");
+    let in_t = in_t.to_device(&Device::Cpu)?;
+    let k_t = k_t.to_device(&Device::Cpu)?;
+    let out_t2 = in_t.conv2d(&k_t, 0, 1, 1, 1)?;
+    let diff = (out_t.to_device(&Device::Cpu)? - out_t2)?
+        .sqr()?
+        .sum_all()?;
+    println!("{diff}");
+
+    let t = Tensor::randn(0f32, 1f32, (2, 4, 96, 96), &device)?;
+    let w = Tensor::randn(0f32, 1f32, (320, 4, 3, 3), &device)?;
+    let res = t.conv2d(&w, 1, 1, 1, 1)?;
+    println!("{res:?}");
     Ok(())
 }

candle-core/examples/metal_basics.rs

@@ -1,28 +0,0 @@
-#[cfg(feature = "accelerate")]
-extern crate accelerate_src;
-
-#[cfg(feature = "mkl")]
-extern crate intel_mkl_src;
-
-use anyhow::Result;
-use candle_core::{Device, Tensor};
-
-fn main() -> Result<()> {
-    // This requires the code to be run with MTL_CAPTURE_ENABLED=1
-    let device = Device::new_metal(0)?;
-    let metal_device = match &device {
-        Device::Metal(m) => m,
-        _ => anyhow::bail!("unexpected device"),
-    };
-    metal_device.capture("/tmp/candle.gputrace")?;
-    // This first synchronize ensures that a new command buffer gets created after setting up the
-    // capture scope.
-    device.synchronize()?;
-    let x = Tensor::randn(0f32, 1.0, (128, 128), &device)?;
-    let x1 = x.add(&x)?;
-    println!("{x1:?}");
-    // This second synchronize ensures that the command buffer gets commited before the end of the
-    // capture scope.
-    device.synchronize()?;
-    Ok(())
-}

candle-core/examples/tensor-tools.rs

@@ -1,5 +1,5 @@
-use candle::quantized::{gguf_file, GgmlDType, QTensor};
-use candle::{Device, Result};
+use candle_core::quantized::{gguf_file, k_quants, QTensor};
+use candle_core::{Device, Result, Tensor};
 use clap::{Parser, Subcommand, ValueEnum};
 use rayon::prelude::*;
 
@@ -11,7 +11,12 @@ enum QuantizationMode {
 }
 
 impl QuantizationMode {
-    fn quantize(&self, name: &str, tensor: QTensor, dtype: GgmlDType) -> Result<QTensor> {
+    fn quantize(
+        &self,
+        name: &str,
+        tensor: QTensor,
+        default: fn(&Tensor) -> Result<QTensor>,
+    ) -> Result<QTensor> {
         match self {
             Self::Llama => {
                 // Same behavior as the llama.cpp quantization.
@@ -19,9 +24,9 @@ impl QuantizationMode {
                 if should_quantize {
                     let tensor = tensor.dequantize(&Device::Cpu)?;
                     if name == "output.weight" {
-                        QTensor::quantize(&tensor, GgmlDType::Q6K)
+                        QTensor::quantize::<k_quants::BlockQ6K>(&tensor)
                     } else {
-                        QTensor::quantize(&tensor, dtype)
+                        default(&tensor)
                     }
                 } else {
                     Ok(tensor)
@@ -55,27 +60,6 @@ enum Quantization {
     F32,
 }
 
-impl Quantization {
-    fn dtype(&self) -> GgmlDType {
-        match self {
-            Quantization::Q4_0 => GgmlDType::Q4_0,
-            Quantization::Q4_1 => GgmlDType::Q4_1,
-            Quantization::Q5_0 => GgmlDType::Q5_0,
-            Quantization::Q5_1 => GgmlDType::Q5_1,
-            Quantization::Q8_0 => GgmlDType::Q8_0,
-            Quantization::Q8_1 => GgmlDType::Q8_1,
-            Quantization::Q2k => GgmlDType::Q2K,
-            Quantization::Q3k => GgmlDType::Q3K,
-            Quantization::Q4k => GgmlDType::Q4K,
-            Quantization::Q5k => GgmlDType::Q5K,
-            Quantization::Q6k => GgmlDType::Q6K,
-            Quantization::Q8k => GgmlDType::Q8K,
-            Quantization::F16 => GgmlDType::F16,
-            Quantization::F32 => GgmlDType::F32,
-        }
-    }
-}
-
 #[derive(ValueEnum, Debug, Clone)]
 enum Format {
     Safetensors,
@@ -117,26 +101,8 @@ enum Command {
         verbose: bool,
     },
 
-    Print {
-        file: std::path::PathBuf,
-
-        names: Vec<String>,
-
-        /// The file format to use, if unspecified infer from the file extension.
-        #[arg(long, value_enum)]
-        format: Option<Format>,
-
-        /// Print the whole content of each tensor.
-        #[arg(long)]
-        full: bool,
-
-        /// Line width for printing the tensors.
-        #[arg(long)]
-        line_width: Option<usize>,
-    },
-
     Quantize {
-        /// The input file(s), in safetensors format.
+        /// The input file, in gguf format.
         in_file: Vec<std::path::PathBuf>,
 
         /// The output file, in gguf format.
@@ -151,15 +117,6 @@ enum Command {
         #[arg(long, value_enum, default_value_t = QuantizationMode::Llama)]
         mode: QuantizationMode,
     },
-
-    Dequantize {
-        /// The input file, in gguf format.
-        in_file: std::path::PathBuf,
-
-        /// The output file, in safetensors format.
-        #[arg(long)]
-        out_file: std::path::PathBuf,
-    },
 }
 
 #[derive(Parser, Debug, Clone)]
@@ -168,20 +125,7 @@ struct Args {
     command: Command,
 }
 
-fn run_print(
-    file: &std::path::PathBuf,
-    names: Vec<String>,
-    format: Option<Format>,
-    full: bool,
-    line_width: Option<usize>,
-    device: &Device,
-) -> Result<()> {
-    if full {
-        candle::display::set_print_options_full();
-    }
-    if let Some(line_width) = line_width {
-        candle::display::set_line_width(line_width)
-    }
+fn run_ls(file: &std::path::PathBuf, format: Option<Format>, verbose: bool) -> Result<()> {
     let format = match format {
         Some(format) => format,
         None => match Format::infer(file) {
@@ -196,127 +140,7 @@ fn run_print(
     };
     match format {
         Format::Npz => {
-            let tensors = candle::npy::NpzTensors::new(file)?;
-            let names = if names.is_empty() {
-                tensors.names().into_iter().map(|v| v.to_string()).collect()
-            } else {
-                names
-            };
-            for name in names.iter() {
-                println!("==== {name} ====");
-                match tensors.get(name)? {
-                    Some(tensor) => println!("{tensor}"),
-                    None => println!("not found"),
-                }
-            }
-        }
-        Format::Safetensors => {
-            use candle::safetensors::Load;
-            let tensors = unsafe { candle::safetensors::MmapedSafetensors::new(file)? };
-            let tensors: std::collections::HashMap<_, _> = tensors.tensors().into_iter().collect();
-            let names = if names.is_empty() {
-                tensors.keys().map(|v| v.to_string()).collect()
-            } else {
-                names
-            };
-            for name in names.iter() {
-                println!("==== {name} ====");
-                match tensors.get(name) {
-                    Some(tensor_view) => {
-                        let tensor = tensor_view.load(device)?;
-                        println!("{tensor}")
-                    }
-                    None => println!("not found"),
-                }
-            }
-        }
-        Format::Pth => {
-            let pth_file = candle::pickle::PthTensors::new(file, None)?;
-            let names = if names.is_empty() {
-                pth_file
-                    .tensor_infos()
-                    .keys()
-                    .map(|v| v.to_string())
-                    .collect()
-            } else {
-                names
-            };
-            for name in names.iter() {
-                println!("==== {name} ====");
-                match pth_file.get(name)? {
-                    Some(tensor) => {
-                        println!("{tensor}")
-                    }
-                    None => println!("not found"),
-                }
-            }
-        }
-        Format::Pickle => {
-            candle::bail!("pickle format is not supported for print")
-        }
-        Format::Ggml => {
-            let mut file = std::fs::File::open(file)?;
-            let content = candle::quantized::ggml_file::Content::read(&mut file, device)?;
-            let names = if names.is_empty() {
-                content.tensors.keys().map(|v| v.to_string()).collect()
-            } else {
-                names
-            };
-            for name in names.iter() {
-                println!("==== {name} ====");
-                match content.tensors.get(name) {
-                    Some(tensor) => {
-                        let tensor = tensor.dequantize(device)?;
-                        println!("{tensor}")
-                    }
-                    None => println!("not found"),
-                }
-            }
-        }
-        Format::Gguf => {
-            let mut file = std::fs::File::open(file)?;
-            let content = gguf_file::Content::read(&mut file)?;
-            let names = if names.is_empty() {
-                content.tensor_infos.keys().map(|v| v.to_string()).collect()
-            } else {
-                names
-            };
-            for name in names.iter() {
-                println!("==== {name} ====");
-                match content.tensor(&mut file, name, device) {
-                    Ok(tensor) => {
-                        let tensor = tensor.dequantize(device)?;
-                        println!("{tensor}")
-                    }
-                    Err(_) => println!("not found"),
-                }
-            }
-        }
-    }
-    Ok(())
-}
-
-fn run_ls(
-    file: &std::path::PathBuf,
-    format: Option<Format>,
-    verbose: bool,
-    device: &Device,
-) -> Result<()> {
-    let format = match format {
-        Some(format) => format,
-        None => match Format::infer(file) {
-            Some(format) => format,
-            None => {
-                println!(
-                    "{file:?}: cannot infer format from file extension, use the --format flag"
-                );
-                return Ok(());
-            }
-        },
-    };
-    match format {
-        Format::Npz => {
-            let tensors = candle::npy::NpzTensors::new(file)?;
+            let tensors = candle_core::npy::NpzTensors::new(file)?;
             let mut names = tensors.names();
             names.sort();
             for name in names {
@@ -328,12 +152,12 @@ fn run_ls(
             }
         }
         Format::Safetensors => {
-            let tensors = unsafe { candle::safetensors::MmapedSafetensors::new(file)? };
+            let tensors = unsafe { candle_core::safetensors::MmapedSafetensors::new(file)? };
             let mut tensors = tensors.tensors();
             tensors.sort_by(|a, b| a.0.cmp(&b.0));
             for (name, view) in tensors.iter() {
                 let dtype = view.dtype();
-                let dtype = match candle::DType::try_from(dtype) {
+                let dtype = match candle_core::DType::try_from(dtype) {
                     Ok(dtype) => format!("{dtype:?}"),
                     Err(_) => format!("{dtype:?}"),
                 };
@@ -342,7 +166,7 @@ fn run_ls(
             }
         }
         Format::Pth => {
-            let mut tensors = candle::pickle::read_pth_tensor_info(file, verbose, None)?;
+            let mut tensors = candle_core::pickle::read_pth_tensor_info(file, verbose)?;
             tensors.sort_by(|a, b| a.name.cmp(&b.name));
             for tensor_info in tensors.iter() {
                 println!(
@@ -359,7 +183,7 @@ fn run_ls(
         Format::Pickle => {
             let file = std::fs::File::open(file)?;
             let mut reader = std::io::BufReader::new(file);
-            let mut stack = candle::pickle::Stack::empty();
+            let mut stack = candle_core::pickle::Stack::empty();
             stack.read_loop(&mut reader)?;
             for (i, obj) in stack.stack().iter().enumerate() {
                 println!("{i} {obj:?}");
@@ -367,7 +191,7 @@ fn run_ls(
         }
         Format::Ggml => {
             let mut file = std::fs::File::open(file)?;
-            let content = candle::quantized::ggml_file::Content::read(&mut file, device)?;
+            let content = candle_core::quantized::ggml_file::Content::read(&mut file)?;
             let mut tensors = content.tensors.into_iter().collect::<Vec<_>>();
             tensors.sort_by(|a, b| a.0.cmp(&b.0));
             for (name, qtensor) in tensors.iter() {
@@ -403,13 +227,42 @@ fn run_quantize_safetensors(
     let mut out_file = std::fs::File::create(out_file)?;
     let mut tensors = std::collections::HashMap::new();
     for in_file in in_files.iter() {
-        let in_tensors = candle::safetensors::load(in_file, &Device::Cpu)?;
+        let in_tensors = candle_core::safetensors::load(in_file, &Device::Cpu)?;
         tensors.extend(in_tensors)
     }
     println!("tensors: {}", tensors.len());
 
-    let dtype = q.dtype();
-    let block_size = dtype.block_size();
+    let quantize_fn = match q {
+        Quantization::Q4_0 => QTensor::quantize::<k_quants::BlockQ4_0>,
+        Quantization::Q4_1 => QTensor::quantize::<k_quants::BlockQ4_1>,
+        Quantization::Q5_0 => QTensor::quantize::<k_quants::BlockQ5_0>,
+        Quantization::Q5_1 => QTensor::quantize::<k_quants::BlockQ5_1>,
+        Quantization::Q8_0 => QTensor::quantize::<k_quants::BlockQ8_0>,
+        Quantization::Q8_1 => QTensor::quantize::<k_quants::BlockQ8_1>,
+        Quantization::Q2k => QTensor::quantize::<k_quants::BlockQ2K>,
+        Quantization::Q3k => QTensor::quantize::<k_quants::BlockQ3K>,
+        Quantization::Q4k => QTensor::quantize::<k_quants::BlockQ4K>,
+        Quantization::Q5k => QTensor::quantize::<k_quants::BlockQ5K>,
+        Quantization::Q6k => QTensor::quantize::<k_quants::BlockQ6K>,
+        Quantization::Q8k => QTensor::quantize::<k_quants::BlockQ8K>,
+        Quantization::F16 => QTensor::quantize::<half::f16>,
+        Quantization::F32 => QTensor::quantize::<f32>,
+    };
+    let block_size = match q {
+        Quantization::Q4_0 => k_quants::QK4_0,
+        Quantization::Q4_1 => k_quants::QK4_1,
+        Quantization::Q5_0 => k_quants::QK5_0,
+        Quantization::Q5_1 => k_quants::QK5_1,
+        Quantization::Q8_0 => k_quants::QK8_0,
+        Quantization::Q8_1 => k_quants::QK8_1,
+        Quantization::Q2k
+        | Quantization::Q3k
+        | Quantization::Q4k
+        | Quantization::Q5k
+        | Quantization::Q6k
+        | Quantization::Q8k => k_quants::QK_K,
+        Quantization::F16 | Quantization::F32 => 1,
+    };
 
     let qtensors = tensors
         .into_par_iter()
@@ -417,9 +270,9 @@ fn run_quantize_safetensors(
             let should_quantize = tensor.rank() == 2 && tensor.dim(1)? % block_size == 0;
             println!("  quantizing {name} {tensor:?} {should_quantize}");
             let tensor = if should_quantize {
-                QTensor::quantize(&tensor, dtype)?
+                quantize_fn(&tensor)?
             } else {
-                QTensor::quantize(&tensor, GgmlDType::F32)?
+                QTensor::quantize::<f32>(&tensor)?
             };
             Ok((name, tensor))
         })
@@ -432,36 +285,18 @@ fn run_quantize_safetensors(
     Ok(())
 }
 
-fn run_dequantize(
-    in_file: std::path::PathBuf,
-    out_file: std::path::PathBuf,
-    device: &Device,
-) -> Result<()> {
-    let mut in_file = std::fs::File::open(in_file)?;
-    let content = gguf_file::Content::read(&mut in_file)?;
-    let mut tensors = std::collections::HashMap::new();
-    for (tensor_name, _) in content.tensor_infos.iter() {
-        let tensor = content.tensor(&mut in_file, tensor_name, device)?;
-        let tensor = tensor.dequantize(device)?;
-        tensors.insert(tensor_name.to_string(), tensor);
-    }
-    candle::safetensors::save(&tensors, out_file)?;
-    Ok(())
-}
-
 fn run_quantize(
     in_files: &[std::path::PathBuf],
     out_file: std::path::PathBuf,
     q: Quantization,
     qmode: QuantizationMode,
-    device: &Device,
 ) -> Result<()> {
     if in_files.is_empty() {
-        candle::bail!("no specified input files")
+        candle_core::bail!("no specified input files")
     }
     if let Some(extension) = out_file.extension() {
         if extension == "safetensors" {
-            candle::bail!("the generated file cannot use the safetensors extension")
+            candle_core::bail!("the generated file cannot use the safetensors extension")
         }
     }
     if let Some(extension) = in_files[0].extension() {
@@ -471,7 +306,7 @@ fn run_quantize(
     }
 
     if in_files.len() != 1 {
-        candle::bail!("only a single in-file can be used when quantizing gguf files")
+        candle_core::bail!("only a single in-file can be used when quantizing gguf files")
     }
 
     // Open the out file early so as to fail directly on missing directories etc.
@@ -480,15 +315,31 @@ fn run_quantize(
     let content = gguf_file::Content::read(&mut in_)?;
     println!("tensors: {}", content.tensor_infos.len());
 
-    let dtype = q.dtype();
+    let quantize_fn = match q {
+        Quantization::Q4_0 => QTensor::quantize::<k_quants::BlockQ4_0>,
+        Quantization::Q4_1 => QTensor::quantize::<k_quants::BlockQ4_1>,
+        Quantization::Q5_0 => QTensor::quantize::<k_quants::BlockQ5_0>,
+        Quantization::Q5_1 => QTensor::quantize::<k_quants::BlockQ5_1>,
+        Quantization::Q8_0 => QTensor::quantize::<k_quants::BlockQ8_0>,
+        Quantization::Q8_1 => QTensor::quantize::<k_quants::BlockQ8_1>,
+        Quantization::Q2k => QTensor::quantize::<k_quants::BlockQ2K>,
+        Quantization::Q3k => QTensor::quantize::<k_quants::BlockQ3K>,
+        Quantization::Q4k => QTensor::quantize::<k_quants::BlockQ4K>,
+        Quantization::Q5k => QTensor::quantize::<k_quants::BlockQ5K>,
+        Quantization::Q6k => QTensor::quantize::<k_quants::BlockQ6K>,
+        Quantization::Q8k => QTensor::quantize::<k_quants::BlockQ8K>,
+        Quantization::F16 => QTensor::quantize::<half::f16>,
+        Quantization::F32 => QTensor::quantize::<f32>,
+    };
+
     let qtensors = content
         .tensor_infos
         .par_iter()
         .map(|(name, _)| {
             println!("  quantizing {name}");
             let mut in_file = std::fs::File::open(&in_files[0])?;
-            let tensor = content.tensor(&mut in_file, name, device)?;
-            let tensor = qmode.quantize(name, tensor, dtype)?;
+            let tensor = content.tensor(&mut in_file, name)?;
+            let tensor = qmode.quantize(name, tensor, quantize_fn)?;
             Ok((name, tensor))
         })
         .collect::<Result<Vec<_>>>()?;
@@ -508,7 +359,6 @@ fn run_quantize(
 
 fn main() -> anyhow::Result<()> {
     let args = Args::parse();
-    let device = Device::Cpu;
     match args.command {
         Command::Ls {
             files,
@@ -520,23 +370,15 @@ fn main() -> anyhow::Result<()> {
                 if multiple_files {
                     println!("--- {file:?} ---");
                 }
-                run_ls(file, format.clone(), verbose, &device)?
+                run_ls(file, format.clone(), verbose)?
             }
         }
-        Command::Print {
-            file,
-            names,
-            format,
-            full,
-            line_width,
-        } => run_print(&file, names, format, full, line_width, &device)?,
         Command::Quantize {
             in_file,
             out_file,
             quantization,
             mode,
-        } => run_quantize(&in_file, out_file, quantization, mode, &device)?,
-        Command::Dequantize { in_file, out_file } => run_dequantize(in_file, out_file, &device)?,
+        } => run_quantize(&in_file, out_file, quantization, mode)?,
     }
     Ok(())
 }

candle-core/src/accelerate.rs

@@ -380,16 +380,6 @@ pub fn vd_tanh_inplace(y: &mut [f64]) {
     unsafe { ffi::vvtanh(y.as_mut_ptr(), y.as_ptr(), &(y.len() as i32)) }
 }
 
-#[inline]
-pub fn vs_exp_inplace(y: &mut [f32]) {
-    unsafe { ffi::vvexpf(y.as_mut_ptr(), y.as_ptr(), &(y.len() as i32)) }
-}
-
-#[inline]
-pub fn vd_exp_inplace(y: &mut [f64]) {
-    unsafe { ffi::vvexp(y.as_mut_ptr(), y.as_ptr(), &(y.len() as i32)) }
-}
-
 #[inline]
 pub fn vs_gelu(vs: &[f32], ys: &mut [f32]) {
     for (&v, y) in vs.iter().zip(ys.iter_mut()) {
@@ -412,28 +402,6 @@ pub fn vd_gelu(vs: &[f64], ys: &mut [f64]) {
     }
 }
 
-#[inline]
-pub fn vs_silu(vs: &[f32], ys: &mut [f32]) {
-    for (&v, y) in vs.iter().zip(ys.iter_mut()) {
-        *y = -v
-    }
-    vs_exp_inplace(ys);
-    for (&v, y) in vs.iter().zip(ys.iter_mut()) {
-        *y = v / (1.0 + *y)
-    }
-}
-
-#[inline]
-pub fn vd_silu(vs: &[f64], ys: &mut [f64]) {
-    for (&v, y) in vs.iter().zip(ys.iter_mut()) {
-        *y = -v
-    }
-    vd_exp_inplace(ys);
-    for (&v, y) in vs.iter().zip(ys.iter_mut()) {
-        *y = v / (1.0 + *y)
-    }
-}
-
 macro_rules! binary_op {
     ($fn_name:ident, $ty:ty, $accelerate_name:ident) => {
         #[inline]

candle-core/src/backend.rs

@@ -1,5 +1,3 @@
-//! Traits to Define Backend Behavior
-//!
 use crate::op::{BinaryOpT, CmpOp, ReduceOp, UnaryOpT};
 use crate::{CpuStorage, DType, Layout, Result, Shape};
 
@@ -41,14 +39,6 @@ pub trait BackendStorage: Sized {
         _params: &crate::conv::ParamsConv1D,
     ) -> Result<Self>;
 
-    fn conv_transpose1d(
-        &self,
-        _l: &Layout,
-        _kernel: &Self,
-        _kernel_l: &Layout,
-        _params: &crate::conv::ParamsConvTranspose1D,
-    ) -> Result<Self>;
-
     fn conv2d(
         &self,
         _l: &Layout,
@@ -100,19 +90,6 @@ pub trait BackendStorage: Sized {
     ) -> Result<Self>;
 
     fn copy_strided_src(&self, _: &mut Self, _: usize, _: &Layout) -> Result<()>;
-
-    #[allow(clippy::too_many_arguments)]
-    // Similar to cudaMemcpy2D, though values are in elements and not in bytes.
-    fn copy2d(
-        &self,
-        _: &mut Self,
-        _d1: usize,
-        _d2: usize,
-        _src_stride1: usize,
-        _dst_stride1: usize,
-        _src_offset: usize,
-        _dst_offset: usize,
-    ) -> Result<()>;
 }
 
 pub trait BackendDevice: Sized + std::fmt::Debug + Clone {
@@ -129,24 +106,11 @@ pub trait BackendDevice: Sized + std::fmt::Debug + Clone {
 
     fn ones_impl(&self, _shape: &Shape, _dtype: DType) -> Result<Self::Storage>;
 
-    /// # Safety
-    /// This function is unsafe as it doesn't initialize the underlying data store.
-    /// The caller should ensure that the data is properly initialized as early as possible
-    /// after this call.
-    unsafe fn alloc_uninit(&self, _shape: &Shape, _dtype: DType) -> Result<Self::Storage>;
-
-    fn storage_from_slice<T: crate::WithDType>(&self, _: &[T]) -> Result<Self::Storage>;
-
     fn storage_from_cpu_storage(&self, _: &CpuStorage) -> Result<Self::Storage>;
 
-    fn storage_from_cpu_storage_owned(&self, _: CpuStorage) -> Result<Self::Storage>;
-
     fn rand_uniform(&self, _: &Shape, _: DType, _: f64, _: f64) -> Result<Self::Storage>;
 
     fn rand_normal(&self, _: &Shape, _: DType, _: f64, _: f64) -> Result<Self::Storage>;
 
     fn set_seed(&self, _: u64) -> Result<()>;
-
-    /// Synchronize should block until all the operations on the device are completed.
-    fn synchronize(&self) -> Result<()>;
 }

candle-core/src/backprop.rs

@@ -1,4 +1,3 @@
-//! Methods for backpropagation of gradients.
 use crate::op::{BinaryOp, Op, ReduceOp, UnaryOp};
 use crate::{Error, Result, Tensor, TensorId};
 use std::collections::HashMap;
@@ -16,17 +15,6 @@ fn broadcast_back(arg: &Tensor, node: &Tensor, reduced_dims: &[usize]) -> Result
     }
 }
 
-thread_local! {
-    static CANDLE_GRAD_DO_NOT_DETACH: bool = {
-        match std::env::var("CANDLE_GRAD_DO_NOT_DETACH") {
-            Ok(s) => {
-                !s.is_empty() && s != "0"
-            },
-            Err(_) => false,
-        }
-    }
-}
-
 impl Tensor {
     /// Return all the nodes that lead to this value in a topologically sorted vec, the first
     /// elements having dependencies on the latter ones, e.g. the first element if any is the
@@ -69,11 +57,6 @@ impl Tensor {
                         kernel: rhs,
                         ..
                     }
-                    | Op::ConvTranspose1D {
-                        arg: lhs,
-                        kernel: rhs,
-                        ..
-                    }
                     | Op::Conv2D {
                         arg: lhs,
                         kernel: rhs,
@@ -112,11 +95,10 @@ impl Tensor {
                     }
                     Op::Unary(_node, UnaryOp::Ceil)
                     | Op::Unary(_node, UnaryOp::Floor)
-                    | Op::Unary(_node, UnaryOp::Round)
-                    | Op::Unary(_node, UnaryOp::Sign) => nodes,
+                    | Op::Unary(_node, UnaryOp::Round) => nodes,
                     Op::Reshape(node)
-                    | Op::UpsampleNearest1D { arg: node, .. }
-                    | Op::UpsampleNearest2D { arg: node, .. }
+                    | Op::UpsampleNearest1D(node)
+                    | Op::UpsampleNearest2D(node)
                     | Op::AvgPool2D { arg: node, .. }
                     | Op::MaxPool2D { arg: node, .. }
                     | Op::Copy(node)
@@ -168,16 +150,10 @@ impl Tensor {
             if node.is_variable() {
                 continue;
             }
-            let grad = grads
-                .remove(node)
-                .expect("candle internal error - grad not populated");
-            // https://github.com/huggingface/candle/issues/1241
-            // Ideally, we would make these operations in place where possible to ensure that we
-            // do not have to allocate too often. Here we just call `.detach` to avoid computing
-            // the backprop graph of the backprop itself. This would be an issue for second order
-            // derivatives but these are out of scope at the moment.
-            let do_not_detach = CANDLE_GRAD_DO_NOT_DETACH.with(|b| *b);
-            let grad = if do_not_detach { grad } else { grad.detach() };
+            let grad = grads.remove(node).unwrap();
+            // TODO: We should perform all these operations in place (or at least not track the
+            // whole graph). The only drawback would be if we wanted to support grad of grad but
+            // this is out of scope.
             if let Some(op) = node.op() {
                 match op {
                     Op::Binary(lhs, rhs, BinaryOp::Add) => {
@@ -232,45 +208,7 @@ impl Tensor {
                         let f_grad = pred.where_cond(&zeros, &grad)?;
                         *f_sum_grad = f_sum_grad.add(&f_grad)?;
                     }
-                    Op::Conv1D {
-                        arg,
-                        kernel,
-                        padding,
-                        stride,
-                        dilation,
-                    } => {
-                        // The output height for conv_transpose1d is:
-                        // (l_in - 1) * stride - 2 * padding + dilation * (k_size - 1) + out_padding + 1
-                        let grad_l_in = grad.dim(2)?;
-                        let k_size = kernel.dim(2)?;
-                        let out_size =
-                            (grad_l_in - 1) * stride + dilation * (k_size - 1) + 1 - 2 * padding;
-                        let out_padding = arg.dim(2)? - out_size;
-                        let grad_arg = grad.conv_transpose1d(
-                            kernel,
-                            *padding,
-                            out_padding,
-                            *stride,
-                            *dilation,
-                            /* groups */ 1,
-                        )?;
-                        let sum_grad = grads.or_insert(arg)?;
-                        *sum_grad = sum_grad.add(&grad_arg)?;
-
-                        let grad_kernel = arg
-                            .transpose(0, 1)?
-                            .conv1d(&grad.transpose(0, 1)?, *padding, *dilation, *stride, 1)?
-                            .transpose(0, 1)?;
-                        let sum_grad = grads.or_insert(kernel)?;
-                        let (_, _, k0) = kernel.dims3()?;
-                        let (_, _, g_k0) = grad_kernel.dims3()?;
-                        let grad_kernel = if g_k0 != k0 {
-                            grad_kernel.narrow(2, 0, k0)?
-                        } else {
-                            grad_kernel
-                        };
-                        *sum_grad = sum_grad.add(&grad_kernel)?;
-                    }
+                    Op::Conv1D { .. } => Err(Error::BackwardNotSupported { op: "conv1d" })?,
                     Op::Conv2D {
                         arg,
                         kernel,
@@ -300,44 +238,11 @@ impl Tensor {
                             .conv2d(&grad.transpose(0, 1)?, *padding, *dilation, *stride, 1)?
                             .transpose(0, 1)?;
                         let sum_grad = grads.or_insert(kernel)?;
-                        let (_, _, k0, k1) = kernel.dims4()?;
-                        let (_, _, g_k0, g_k1) = grad_kernel.dims4()?;
-                        let grad_kernel = if g_k0 != k0 || g_k1 != k1 {
-                            grad_kernel.narrow(2, 0, k0)?.narrow(3, 0, k1)?
-                        } else {
-                            grad_kernel
-                        };
                         *sum_grad = sum_grad.add(&grad_kernel)?;
                     }
-                    Op::ConvTranspose1D { .. } => Err(Error::BackwardNotSupported {
-                        op: "conv-transpose1d",
+                    Op::ConvTranspose2D { .. } => Err(Error::BackwardNotSupported {
+                        op: "conv-transpose2d",
                     })?,
-                    Op::ConvTranspose2D {
-                        arg,
-                        kernel,
-                        padding,
-                        stride,
-                        dilation,
-                        output_padding: _output_padding,
-                    } => {
-                        let grad_arg = grad.conv2d(kernel, *padding, *stride, *dilation, 1)?;
-                        let sum_grad = grads.or_insert(arg)?;
-                        *sum_grad = sum_grad.add(&grad_arg)?;
-
-                        let grad_kernel = grad
-                            .transpose(0, 1)?
-                            .conv2d(&arg.transpose(0, 1)?, *padding, *dilation, *stride, 1)?
-                            .transpose(0, 1)?;
-                        let sum_grad = grads.or_insert(kernel)?;
-                        let (_, _, k0, k1) = kernel.dims4()?;
-                        let (_, _, g_k0, g_k1) = grad_kernel.dims4()?;
-                        let grad_kernel = if g_k0 != k0 || g_k1 != k1 {
-                            grad_kernel.narrow(2, 0, k0)?.narrow(3, 0, k1)?
-                        } else {
-                            grad_kernel
-                        };
-                        *sum_grad = sum_grad.add(&grad_kernel)?;
-                    }
                     Op::AvgPool2D {
                         arg,
                         kernel_size,
@@ -373,39 +278,12 @@ impl Tensor {
                         let sum_grad = grads.or_insert(arg)?;
                         *sum_grad = sum_grad.add(&grad_arg)?;
                     }
-                    Op::UpsampleNearest1D { arg, target_size } => {
-                        let (_n, c, size) = arg.dims3()?;
-                        if target_size % size != 0 {
-                            crate::bail!("backward not supported for non integer upscaling factors")
-                        }
-                        let scale = target_size / size;
-
-                        let kernel = Tensor::ones((c, 1, scale), arg.dtype(), arg.device())?;
-                        let conv_sum = grad.conv1d(&kernel, 0, scale, 1, c)?;
-                        let sum_grad = grads.or_insert(arg)?;
-                        *sum_grad = conv_sum;
-                    }
-                    Op::UpsampleNearest2D {
-                        arg,
-                        target_h,
-                        target_w,
-                    } => {
-                        let (_n, c, h, w) = arg.dims4()?;
-                        if target_h % h != 0 || target_w % w != 0 {
-                            crate::bail!("backward not supported for non integer upscaling factors")
-                        }
-                        let scale_h = target_h / h;
-                        let scale_w = target_w / w;
-
-                        if scale_h != scale_w {
-                            crate::bail!("backward not supported for non uniform upscaling factors")
-                        };
-                        let kernel =
-                            Tensor::ones((c, 1, scale_h, scale_w), arg.dtype(), arg.device())?;
-                        let conv_sum = grad.conv2d(&kernel, 0, scale_h, 1, c)?;
-                        let sum_grad = grads.or_insert(arg)?;
-                        *sum_grad = conv_sum;
-                    }
+                    Op::UpsampleNearest1D { .. } => Err(Error::BackwardNotSupported {
+                        op: "upsample-nearest1d",
+                    })?,
+                    Op::UpsampleNearest2D { .. } => Err(Error::BackwardNotSupported {
+                        op: "upsample-nearest2d",
+                    })?,
                     Op::SliceScatter0(lhs, rhs, start_rhs) => {
                         let rhs_sum_grad = grads.or_insert(rhs)?;
                         let rhs_grad = grad.narrow(0, *start_rhs, rhs.dim(0)?)?;
@@ -489,6 +367,7 @@ impl Tensor {
                         let sum_grad = grads.or_insert(arg)?;
                         *sum_grad = sum_grad.add(&grad)?;
                     }
+                    Op::Cmp(_args, _) => {}
                     Op::Reduce(arg, ReduceOp::Max, reduced_dims) => {
                         let node = broadcast_back(arg, node, reduced_dims)?;
                         let grad = broadcast_back(arg, &grad, reduced_dims)?;
@@ -578,18 +457,20 @@ impl Tensor {
                         let sum_grad = grads.or_insert(arg)?;
                         *sum_grad = sum_grad.add(&arg_grad)?
                     }
-                    Op::Unary(_, UnaryOp::Floor)
-                    | Op::Unary(_, UnaryOp::Round)
-                    | Op::Reduce(_, ReduceOp::ArgMin, _)
-                    | Op::Reduce(_, ReduceOp::ArgMax, _)
-                    | Op::Unary(_, UnaryOp::Sign)
-                    | Op::Cmp(_, _) => {}
+                    Op::Reduce(_, ReduceOp::ArgMin, _) => {}
+                    Op::Reduce(_, ReduceOp::ArgMax, _) => {}
                     Op::Reshape(arg) => {
                         let arg_grad = grad.reshape(arg.dims())?;
                         let sum_grad = grads.or_insert(arg)?;
                         *sum_grad = sum_grad.add(&arg_grad)?
                     }
                     Op::Unary(_, UnaryOp::Ceil) => Err(Error::BackwardNotSupported { op: "ceil" })?,
+                    Op::Unary(_, UnaryOp::Floor) => {
+                        Err(Error::BackwardNotSupported { op: "floor" })?
+                    }
+                    Op::Unary(_, UnaryOp::Round) => {
+                        Err(Error::BackwardNotSupported { op: "round" })?
+                    }
                     Op::Unary(arg, UnaryOp::Gelu) => {
                         let sum_grad = grads.or_insert(arg)?;
                         let cube = arg.powf(3.)?;
@@ -599,46 +480,16 @@ impl Tensor {
                             + 0.5)?;
                         *sum_grad = sum_grad.add(&(&grad * gelu_grad)?)?
                     }
-                    Op::Unary(arg, UnaryOp::Erf) => {
-                        let sum_grad = grads.or_insert(arg)?;
-                        // d/dx erf(x) = 2/sqrt(pi) * e^(-x^2)
-                        let erf_grad =
-                            (2. / std::f64::consts::PI.sqrt()) * (arg.sqr()?.neg()?).exp()?;
-                        *sum_grad = sum_grad.add(&(&grad * erf_grad)?)?
-                    }
-                    Op::Unary(arg, UnaryOp::GeluErf) => {
-                        let sum_grad = grads.or_insert(arg)?;
-                        // d/dx gelu_erf(x) = 0.5 + 0.398942 e^(-x^2/2) x + 0.5 erf(x/sqrt(2))
-                        let neg_half_square = (arg.sqr()?.neg()? / 2.)?;
-                        let scaled_exp_arg = (0.398942 * neg_half_square.exp()? * arg)?;
-                        let arg_scaled_sqrt = (arg / 2f64.sqrt())?;
-                        let erf_scaled_sqrt = (0.5 * arg_scaled_sqrt.erf()?)?;
-                        let gelu_erf_grad = (0.5 + scaled_exp_arg + erf_scaled_sqrt)?;
-                        *sum_grad = sum_grad.add(&(&grad * gelu_erf_grad)?)?;
+                    Op::Unary(_, UnaryOp::Erf) => Err(Error::BackwardNotSupported { op: "erf" })?,
+                    Op::Unary(_, UnaryOp::GeluErf) => {
+                        Err(Error::BackwardNotSupported { op: "gelu-erf" })?
                     }
                     Op::Unary(arg, UnaryOp::Relu) => {
                         let sum_grad = grads.or_insert(arg)?;
                         let relu_grad = arg.ge(&arg.zeros_like()?)?.to_dtype(arg.dtype())?;
                         *sum_grad = sum_grad.add(&(&grad * relu_grad)?)?
                     }
-                    Op::Unary(arg, UnaryOp::Silu) => {
-                        let sum_grad = grads.or_insert(arg)?;
-                        // d/dx silu = sigmoid(x) * (1 + x * (1 - sigmoid(x))) = sigmoid(x) * (1 - node) + node
-                        let sigmoid_arg = (arg.neg()?.exp()? + 1.)?.recip()?;
-                        let silu_grad = &sigmoid_arg * (1. - *node) + *node;
-                        *sum_grad = sum_grad.add(&(&grad * silu_grad)?)?
-                    }
-                    Op::Elu(arg, alpha) => {
-                        // d/dx elu(x) = 1 for x > 0, alpha * e^x for x <= 0
-                        let sum_grad = grads.or_insert(arg)?;
-                        let zeros = arg.zeros_like()?;
-                        let positive_mask = arg.gt(&zeros)?.to_dtype(arg.dtype())?;
-                        let negative_mask = arg.le(&zeros)?.to_dtype(arg.dtype())?;
-                        // node == alpha * (e^x - 1) for x <= 0, reuse it
-                        let negative_exp_mask = (negative_mask * (*node + *alpha))?;
-                        let combined_mask = (positive_mask + negative_exp_mask)?;
-                        *sum_grad = sum_grad.add(&(grad * combined_mask)?)?
-                    }
+                    Op::Elu(..) => Err(Error::BackwardNotSupported { op: "elu" })?,
                     Op::Powf(arg, e) => {
                         let arg_grad = (&(grad * arg.powf(e - 1.)?)? * *e)?;
                         let sum_grad = grads.or_insert(arg)?;
@@ -713,38 +564,30 @@ impl Tensor {
     }
 }
 
-/// A store for gradients, associating a tensor id to the corresponding gradient tensor, used for back propagation.
 #[derive(Debug)]
 pub struct GradStore(HashMap<TensorId, Tensor>);
 
 impl GradStore {
-    /// Create a new gradient store
     fn new() -> Self {
         GradStore(HashMap::new())
     }
 
-    /// Get the gradient tensor corresponding to the given tensor id
     pub fn get_id(&self, id: TensorId) -> Option<&Tensor> {
         self.0.get(&id)
     }
 
-    /// Get the gradient tensor associated with the given tensor
     pub fn get(&self, tensor: &Tensor) -> Option<&Tensor> {
         self.0.get(&tensor.id())
     }
 
-    /// Remove the gradient tensor associated with the given tensor, returning it if it exists
     pub fn remove(&mut self, tensor: &Tensor) -> Option<Tensor> {
         self.0.remove(&tensor.id())
     }
 
-    /// Insert a gradient tensor associated with the given tensor, returning the previous gradient tensor if it existed
     pub fn insert(&mut self, tensor: &Tensor, grad: Tensor) -> Option<Tensor> {
         self.0.insert(tensor.id(), grad)
     }
 
-    /// Get the gradient tensor associated with the given tensor, or, if it does not exist,
-    /// insert a tensor of zeroes, with the same shape and type as the given tensors and return it
     fn or_insert(&mut self, tensor: &Tensor) -> Result<&mut Tensor> {
         use std::collections::hash_map::Entry;
         let grad = match self.0.entry(tensor.id()) {
@@ -756,9 +599,4 @@ impl GradStore {
         };
         Ok(grad)
     }
-
-    /// Get the tensor ids of the stored gradient tensors
-    pub fn get_ids(&self) -> impl Iterator<Item = &TensorId> {
-        self.0.keys()
-    }
 }

candle-core/src/conv.rs

@@ -1,5 +1,3 @@
-//! 1D and 2D Convolutions
-//!
 use crate::{op::BackpropOp, op::Op, Error, Result, Tensor};
 
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -27,33 +25,6 @@ impl ParamsConv1D {
     }
 }
 
-#[derive(Debug, Clone, PartialEq, Eq)]
-pub struct ParamsConvTranspose1D {
-    pub(crate) b_size: usize,
-    pub(crate) l_in: usize,
-    pub(crate) c_out: usize,
-    pub(crate) c_in: usize,
-    pub(crate) k_size: usize,
-    pub(crate) padding: usize,
-    pub(crate) output_padding: usize,
-    pub(crate) stride: usize,
-    pub(crate) dilation: usize,
-}
-
-impl ParamsConvTranspose1D {
-    pub(crate) fn l_out(&self) -> usize {
-        (self.l_in - 1) * self.stride - 2 * self.padding
-            + self.dilation * (self.k_size - 1)
-            + self.output_padding
-            + 1
-    }
-
-    pub(crate) fn out_dims(&self) -> Vec<usize> {
-        let l_out = self.l_out();
-        vec![self.b_size, self.c_out, l_out]
-    }
-}
-
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub enum CudnnFwdAlgo {
     ImplicitGemm,
@@ -189,72 +160,6 @@ impl Tensor {
         }
     }
 
-    fn conv_transpose1d_single_group(
-        &self,
-        kernel: &Self,
-        params: &ParamsConvTranspose1D,
-    ) -> Result<Self> {
-        let storage = self.storage().conv_transpose1d(
-            self.layout(),
-            &kernel.storage(),
-            kernel.layout(),
-            params,
-        )?;
-        let op = BackpropOp::new2(self, kernel, |arg, kernel| Op::ConvTranspose1D {
-            arg,
-            kernel,
-            padding: params.padding,
-            output_padding: params.output_padding,
-            stride: params.stride,
-            dilation: params.dilation,
-        });
-        let out_dims = params.out_dims();
-        Ok(crate::tensor::from_storage(storage, out_dims, op, false))
-    }
-
-    /// Applies a 1D transposed convolution over the input tensor.
-    pub fn conv_transpose1d(
-        &self,
-        kernel: &Self,
-        padding: usize,
-        output_padding: usize,
-        stride: usize,
-        dilation: usize,
-        groups: usize,
-    ) -> Result<Self> {
-        let (c_in_k, c_out, k_size) = kernel.dims3()?;
-        let (b_size, c_in, l_in) = self.dims3()?;
-        if c_in != c_in_k {
-            crate::bail!("in_channel mismatch between input ({c_in}) and kernel ({c_in_k})")
-        }
-        if c_in % groups != 0 {
-            crate::bail!("in_channel {c_in} is not divisible by the number of groups")
-        }
-        let params = ParamsConvTranspose1D {
-            b_size,
-            l_in,
-            k_size,
-            c_out,
-            c_in: c_in / groups,
-            padding,
-            output_padding,
-            stride,
-            dilation,
-        };
-        if groups == 1 {
-            self.conv_transpose1d_single_group(kernel, &params)
-        } else {
-            let blocks = self.chunk(groups, 1)?;
-            let kernel = kernel.chunk(groups, 0)?;
-            let blocks = blocks
-                .iter()
-                .zip(&kernel)
-                .map(|(block, kernel)| block.conv_transpose1d_single_group(kernel, &params))
-                .collect::<Result<Vec<_>>>()?;
-            Tensor::cat(&blocks, 1)
-        }
-    }
-
     fn conv2d_single_group(&self, kernel: &Self, params: &ParamsConv2D) -> Result<Self> {
         let storage =
             self.storage()

candle-core/src/cpu/mod.rs

@@ -1,9 +1,6 @@
-//! Traits and methods for CPU-backed Tensors
-
 pub mod erf;
 pub mod kernels;
 
-#[allow(unused)]
 trait Cpu<const ARR: usize> {
     type Unit;
     type Array;
@@ -21,7 +18,6 @@ trait Cpu<const ARR: usize> {
     unsafe fn vec_store(mem_addr: *mut f32, a: Self::Unit);
 }
 
-#[allow(unused)]
 trait CpuF16<const ARR: usize> {
     type Unit;
     type Array;

candle-core/src/cpu_backend/utils.rs

@@ -1,360 +0,0 @@
-/// Helper functions to write CPU kernels.
-use crate::backend::BackendStorage;
-use crate::{Error, Layout, Result, WithDType};
-
-type C = super::CpuStorage;
-pub trait Map1 {
-    fn f<T: WithDType>(&self, vs: &[T], layout: &Layout) -> Result<Vec<T>>;
-
-    fn map(&self, vs: &C, layout: &Layout) -> Result<C> {
-        match vs {
-            C::U8(vs) => Ok(C::U8(self.f(vs, layout)?)),
-            C::U32(vs) => Ok(C::U32(self.f(vs, layout)?)),
-            C::I64(vs) => Ok(C::I64(self.f(vs, layout)?)),
-            C::BF16(vs) => Ok(C::BF16(self.f(vs, layout)?)),
-            C::F16(vs) => Ok(C::F16(self.f(vs, layout)?)),
-            C::F32(vs) => Ok(C::F32(self.f(vs, layout)?)),
-            C::F64(vs) => Ok(C::F64(self.f(vs, layout)?)),
-        }
-    }
-}
-
-pub trait Map1Any {
-    fn f<T: WithDType, W: Fn(Vec<T>) -> C>(&self, vs: &[T], layout: &Layout, wrap: W) -> Result<C>;
-
-    fn map(&self, vs: &C, layout: &Layout) -> Result<C> {
-        match vs {
-            C::U8(vs) => Ok(self.f(vs, layout, C::U8)?),
-            C::U32(vs) => Ok(self.f(vs, layout, C::U32)?),
-            C::I64(vs) => Ok(self.f(vs, layout, C::I64)?),
-            C::BF16(vs) => Ok(self.f(vs, layout, C::BF16)?),
-            C::F16(vs) => Ok(self.f(vs, layout, C::F16)?),
-            C::F32(vs) => Ok(self.f(vs, layout, C::F32)?),
-            C::F64(vs) => Ok(self.f(vs, layout, C::F64)?),
-        }
-    }
-}
-
-pub trait Map2 {
-    const OP: &'static str;
-    fn f<T: WithDType>(&self, v1: &[T], l1: &Layout, v2: &[T], l2: &Layout) -> Result<Vec<T>>;
-
-    fn map(&self, v1: &C, l1: &Layout, v2: &C, l2: &Layout) -> Result<C> {
-        match (v1, v2) {
-            (C::U8(v1), C::U8(v2)) => Ok(C::U8(self.f(v1, l1, v2, l2)?)),
-            (C::U32(v1), C::U32(v2)) => Ok(C::U32(self.f(v1, l1, v2, l2)?)),
-            (C::I64(v1), C::I64(v2)) => Ok(C::I64(self.f(v1, l1, v2, l2)?)),
-            (C::BF16(v1), C::BF16(v2)) => Ok(C::BF16(self.f(v1, l1, v2, l2)?)),
-            (C::F16(v1), C::F16(v2)) => Ok(C::F16(self.f(v1, l1, v2, l2)?)),
-            (C::F32(v1), C::F32(v2)) => Ok(C::F32(self.f(v1, l1, v2, l2)?)),
-            (C::F64(v1), C::F64(v2)) => Ok(C::F64(self.f(v1, l1, v2, l2)?)),
-            _ => Err(Error::DTypeMismatchBinaryOp {
-                lhs: v1.dtype(),
-                rhs: v2.dtype(),
-                op: Self::OP,
-            }
-            .bt()),
-        }
-    }
-}
-
-pub trait Map2U8 {
-    const OP: &'static str;
-    fn f<T: WithDType>(&self, v1: &[T], l1: &Layout, v2: &[T], l2: &Layout) -> Result<Vec<u8>>;
-
-    fn map(&self, v1: &C, l1: &Layout, v2: &C, l2: &Layout) -> Result<C> {
-        match (v1, v2) {
-            (C::U8(v1), C::U8(v2)) => Ok(C::U8(self.f(v1, l1, v2, l2)?)),
-            (C::U32(v1), C::U32(v2)) => Ok(C::U8(self.f(v1, l1, v2, l2)?)),
-            (C::I64(v1), C::I64(v2)) => Ok(C::U8(self.f(v1, l1, v2, l2)?)),
-            (C::BF16(v1), C::BF16(v2)) => Ok(C::U8(self.f(v1, l1, v2, l2)?)),
-            (C::F16(v1), C::F16(v2)) => Ok(C::U8(self.f(v1, l1, v2, l2)?)),
-            (C::F32(v1), C::F32(v2)) => Ok(C::U8(self.f(v1, l1, v2, l2)?)),
-            (C::F64(v1), C::F64(v2)) => Ok(C::U8(self.f(v1, l1, v2, l2)?)),
-            _ => Err(Error::DTypeMismatchBinaryOp {
-                lhs: v1.dtype(),
-                rhs: v2.dtype(),
-                op: Self::OP,
-            }
-            .bt()),
-        }
-    }
-}
-
-pub fn binary_map<T: Copy, U: Copy, F: FnMut(T, T) -> U>(
-    lhs_l: &Layout,
-    rhs_l: &Layout,
-    lhs: &[T],
-    rhs: &[T],
-    mut f: F,
-) -> Vec<U> {
-    match (lhs_l.contiguous_offsets(), rhs_l.contiguous_offsets()) {
-        (Some((o_l1, o_l2)), Some((o_r1, o_r2))) => lhs[o_l1..o_l2]
-            .iter()
-            .zip(rhs[o_r1..o_r2].iter())
-            .map(|(&l, &r)| f(l, r))
-            .collect(),
-        (Some((o_l1, o_l2)), None) => {
-            // TODO: Maybe we want to avoid going through the layout twice.
-            match rhs_l.offsets_b() {
-                Some(ob) => {
-                    let mut i_in_block = 0;
-                    let mut i_right_broadcast = 0;
-                    lhs[o_l1..o_l2]
-                        .iter()
-                        .map(|&l| {
-                            let r = unsafe { rhs.get_unchecked(i_in_block + ob.start) };
-                            i_right_broadcast += 1;
-                            if i_right_broadcast >= ob.right_broadcast {
-                                i_in_block += 1;
-                                i_right_broadcast = 0;
-                            }
-                            if i_in_block >= ob.len {
-                                i_in_block = 0
-                            }
-                            f(l, *r)
-                        })
-                        .collect()
-                }
-                None => lhs_l
-                    .strided_index()
-                    .zip(rhs_l.strided_index())
-                    .map(|(lhs_i, rhs_i)| f(lhs[lhs_i], rhs[rhs_i]))
-                    .collect(),
-            }
-        }
-        (None, Some((o_r1, o_r2))) => {
-            // TODO: Maybe we want to avoid going through the layout twice.
-            match lhs_l.offsets_b() {
-                Some(ob) => {
-                    let mut i_in_block = 0;
-                    let mut i_right_broadcast = 0;
-                    rhs[o_r1..o_r2]
-                        .iter()
-                        .map(|&r| {
-                            let l = unsafe { lhs.get_unchecked(i_in_block + ob.start) };
-                            i_right_broadcast += 1;
-                            if i_right_broadcast >= ob.right_broadcast {
-                                i_in_block += 1;
-                                i_right_broadcast = 0;
-                            }
-                            if i_in_block >= ob.len {
-                                i_in_block = 0
-                            }
-                            f(*l, r)
-                        })
-                        .collect()
-                }
-                None => lhs_l
-                    .strided_index()
-                    .zip(rhs_l.strided_index())
-                    .map(|(lhs_i, rhs_i)| f(lhs[lhs_i], rhs[rhs_i]))
-                    .collect(),
-            }
-        }
-        _ => lhs_l
-            .strided_index()
-            .zip(rhs_l.strided_index())
-            .map(|(lhs_i, rhs_i)| f(lhs[lhs_i], rhs[rhs_i]))
-            .collect(),
-    }
-}
-
-// Similar to binary_map but with vectorized variants.
-pub fn binary_map_vec<T: Copy, F: FnMut(T, T) -> T, FV: FnMut(&[T], &[T], &mut [T])>(
-    lhs_l: &Layout,
-    rhs_l: &Layout,
-    lhs: &[T],
-    rhs: &[T],
-    mut f: F,
-    mut f_vec: FV,
-) -> Vec<T> {
-    let el_count = lhs_l.shape().elem_count();
-    match (lhs_l.contiguous_offsets(), rhs_l.contiguous_offsets()) {
-        (Some((o_l1, o_l2)), Some((o_r1, o_r2))) => {
-            let mut ys: Vec<T> = Vec::with_capacity(el_count);
-            let ys_to_set = ys.spare_capacity_mut();
-            let ys_to_set = unsafe {
-                std::mem::transmute::<&mut [std::mem::MaybeUninit<T>], &mut [T]>(ys_to_set)
-            };
-            f_vec(&lhs[o_l1..o_l2], &rhs[o_r1..o_r2], ys_to_set);
-            // SAFETY: values are all set by f_vec.
-            unsafe { ys.set_len(el_count) };
-            ys
-        }
-        (Some((o_l1, o_l2)), None) => match rhs_l.offsets_b() {
-            Some(ob) if ob.right_broadcast == 1 => {
-                let rhs = &rhs[ob.start..ob.start + ob.len];
-                let mut ys: Vec<T> = Vec::with_capacity(el_count);
-                let ys_to_set = ys.spare_capacity_mut();
-                let ys_to_set = unsafe {
-                    std::mem::transmute::<&mut [std::mem::MaybeUninit<T>], &mut [T]>(ys_to_set)
-                };
-                let mut dst_i = 0;
-                for src_i in (o_l1..o_l2).step_by(ob.len) {
-                    f_vec(
-                        &lhs[src_i..src_i + ob.len],
-                        rhs,
-                        &mut ys_to_set[dst_i..dst_i + ob.len],
-                    );
-                    dst_i += ob.len;
-                }
-                // SAFETY: values are all set by f_vec.
-                unsafe { ys.set_len(el_count) };
-                ys
-            }
-            Some(ob) => {
-                let rhs = &rhs[ob.start..ob.start + ob.len];
-                let mut ys = lhs[o_l1..o_l2].to_vec();
-                for idx_l in 0..ob.left_broadcast {
-                    let start = idx_l * ob.len * ob.right_broadcast;
-                    for (i, &r) in rhs.iter().enumerate() {
-                        let start = start + i * ob.right_broadcast;
-                        for v in ys[start..start + ob.right_broadcast].iter_mut() {
-                            *v = f(*v, r)
-                        }
-                    }
-                }
-                ys
-            }
-            None => lhs_l
-                .strided_index()
-                .zip(rhs_l.strided_index())
-                .map(|(lhs_i, rhs_i)| f(lhs[lhs_i], rhs[rhs_i]))
-                .collect(),
-        },
-        (None, Some((o_r1, o_r2))) => match lhs_l.offsets_b() {
-            Some(ob) if ob.right_broadcast == 1 => {
-                let lhs = &lhs[ob.start..ob.start + ob.len];
-                let mut ys: Vec<T> = Vec::with_capacity(el_count);
-                let ys_to_set = ys.spare_capacity_mut();
-                let ys_to_set = unsafe {
-                    std::mem::transmute::<&mut [std::mem::MaybeUninit<T>], &mut [T]>(ys_to_set)
-                };
-                let mut dst_i = 0;
-                for src_i in (o_r1..o_r2).step_by(ob.len) {
-                    f_vec(
-                        lhs,
-                        &rhs[src_i..src_i + ob.len],
-                        &mut ys_to_set[dst_i..dst_i + ob.len],
-                    );
-                    dst_i += ob.len;
-                }
-                // SAFETY: values are all set by f_vec.
-                unsafe { ys.set_len(el_count) };
-                ys
-            }
-            Some(ob) => {
-                let lhs = &lhs[ob.start..ob.start + ob.len];
-                let mut ys = rhs[o_r1..o_r2].to_vec();
-                for idx_l in 0..ob.left_broadcast {
-                    let start = idx_l * ob.len * ob.right_broadcast;
-                    for (i, &l) in lhs.iter().enumerate() {
-                        let start = start + i * ob.right_broadcast;
-                        for v in ys[start..start + ob.right_broadcast].iter_mut() {
-                            *v = f(l, *v)
-                        }
-                    }
-                }
-                ys
-            }
-            None => lhs_l
-                .strided_index()
-                .zip(rhs_l.strided_index())
-                .map(|(lhs_i, rhs_i)| f(lhs[lhs_i], rhs[rhs_i]))
-                .collect(),
-        },
-        _ => lhs_l
-            .strided_index()
-            .zip(rhs_l.strided_index())
-            .map(|(lhs_i, rhs_i)| f(lhs[lhs_i], rhs[rhs_i]))
-            .collect(),
-    }
-}
-
-pub fn unary_map<T: Copy, U: Copy, F: FnMut(T) -> U>(
-    vs: &[T],
-    layout: &Layout,
-    mut f: F,
-) -> Vec<U> {
-    match layout.strided_blocks() {
-        crate::StridedBlocks::SingleBlock { start_offset, len } => vs
-            [start_offset..start_offset + len]
-            .iter()
-            .map(|&v| f(v))
-            .collect(),
-        crate::StridedBlocks::MultipleBlocks {
-            block_start_index,
-            block_len,
-        } => {
-            let mut result = Vec::with_capacity(layout.shape().elem_count());
-            // Specialize the case where block_len is one to avoid the second loop.
-            if block_len == 1 {
-                for index in block_start_index {
-                    let v = unsafe { vs.get_unchecked(index) };
-                    result.push(f(*v))
-                }
-            } else {
-                for index in block_start_index {
-                    for offset in 0..block_len {
-                        let v = unsafe { vs.get_unchecked(index + offset) };
-                        result.push(f(*v))
-                    }
-                }
-            }
-            result
-        }
-    }
-}
-
-pub fn unary_map_vec<T: Copy, U: Copy, F: FnMut(T) -> U, FV: FnMut(&[T], &mut [U])>(
-    vs: &[T],
-    layout: &Layout,
-    mut f: F,
-    mut f_vec: FV,
-) -> Vec<U> {
-    match layout.strided_blocks() {
-        crate::StridedBlocks::SingleBlock { start_offset, len } => {
-            let mut ys: Vec<U> = Vec::with_capacity(len);
-            let ys_to_set = ys.spare_capacity_mut();
-            let ys_to_set = unsafe {
-                std::mem::transmute::<&mut [std::mem::MaybeUninit<U>], &mut [U]>(ys_to_set)
-            };
-            f_vec(&vs[start_offset..start_offset + len], ys_to_set);
-            // SAFETY: values are all set by f_vec.
-            unsafe { ys.set_len(len) };
-            ys
-        }
-        crate::StridedBlocks::MultipleBlocks {
-            block_start_index,
-            block_len,
-        } => {
-            let el_count = layout.shape().elem_count();
-            // Specialize the case where block_len is one to avoid the second loop.
-            if block_len == 1 {
-                let mut result = Vec::with_capacity(el_count);
-                for index in block_start_index {
-                    let v = unsafe { vs.get_unchecked(index) };
-                    result.push(f(*v))
-                }
-                result
-            } else {
-                let mut ys: Vec<U> = Vec::with_capacity(el_count);
-                let ys_to_set = ys.spare_capacity_mut();
-                let ys_to_set = unsafe {
-                    std::mem::transmute::<&mut [std::mem::MaybeUninit<U>], &mut [U]>(ys_to_set)
-                };
-                let mut dst_index = 0;
-                for src_index in block_start_index {
-                    let vs = &vs[src_index..src_index + block_len];
-                    let ys = &mut ys_to_set[dst_index..dst_index + block_len];
-                    f_vec(vs, ys);
-                    dst_index += block_len;
-                }
-                // SAFETY: values are all set by f_vec.
-                unsafe { ys.set_len(el_count) };
-                ys
-            }
-        }
-    }
-}

candle-core/src/cuda_backend/device.rs

@@ -1,487 +0,0 @@
-use crate::backend::BackendDevice;
-use crate::{CpuStorage, CpuStorageRef, DType, Layout, Result, Shape};
-pub use candle_kernels as kernels;
-pub use cudarc;
-use cudarc::driver::{CudaFunction, LaunchAsync, LaunchConfig};
-use half::{bf16, f16};
-use std::sync::{Arc, Mutex};
-
-use super::{CudaError, CudaStorage, CudaStorageSlice, WrapErr};
-
-/// Unique identifier for cuda devices.
-#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
-pub struct DeviceId(usize);
-
-impl DeviceId {
-    fn new() -> Self {
-        // https://users.rust-lang.org/t/idiomatic-rust-way-to-generate-unique-id/33805
-        use std::sync::atomic;
-        static COUNTER: atomic::AtomicUsize = atomic::AtomicUsize::new(1);
-        Self(COUNTER.fetch_add(1, atomic::Ordering::Relaxed))
-    }
-}
-
-struct CudaRng(cudarc::curand::CudaRng);
-unsafe impl Send for CudaRng {}
-
-#[derive(Clone)]
-pub struct CudaDevice {
-    id: DeviceId,
-    device: Arc<cudarc::driver::CudaDevice>,
-    pub(crate) blas: Arc<cudarc::cublas::CudaBlas>,
-    curand: Arc<Mutex<CudaRng>>,
-}
-
-impl std::fmt::Debug for CudaDevice {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "CudaDevice({:?})", self.id)
-    }
-}
-
-impl std::ops::Deref for CudaDevice {
-    type Target = Arc<cudarc::driver::CudaDevice>;
-
-    fn deref(&self) -> &Self::Target {
-        &self.device
-    }
-}
-
-impl CudaDevice {
-    pub fn cuda_device(&self) -> Arc<cudarc::driver::CudaDevice> {
-        self.device.clone()
-    }
-
-    pub fn compile(
-        &self,
-        func_name: &'static str,
-        kernel: ug::lang::ssa::Kernel,
-    ) -> Result<CudaFunction> {
-        let mut buf = vec![];
-        ug_cuda::code_gen::gen(&mut buf, func_name, &kernel)?;
-        let cuda_code = String::from_utf8(buf)?;
-        let opts = cudarc::nvrtc::CompileOptions {
-            use_fast_math: Some(true),
-            ..Default::default()
-        };
-        let ptx = cudarc::nvrtc::safe::compile_ptx_with_opts(cuda_code, opts).w()?;
-        self.device.load_ptx(ptx, "ug", &[func_name]).w()?;
-        let func = match self.device.get_func("ug", func_name) {
-            Some(func) => func,
-            None => crate::bail!("unknown function ug::{func_name}"),
-        };
-        Ok(func)
-    }
-
-    pub fn id(&self) -> DeviceId {
-        self.id
-    }
-
-    fn const_impl(&self, v: f64, shape: &Shape, dtype: DType) -> Result<CudaStorage> {
-        let elem_count = shape.elem_count();
-        let cfg = LaunchConfig::for_num_elems(elem_count as u32);
-        let slice = match dtype {
-            DType::U8 => {
-                // SAFETY: Set later by running the fill kernel.
-                let data = unsafe { self.alloc::<u8>(elem_count) }.w()?;
-                let func = self.get_or_load_func("fill_u8", kernels::FILL)?;
-                let params = (&data, v as u8, elem_count);
-                unsafe { func.launch(cfg, params) }.w()?;
-                CudaStorageSlice::U8(data)
-            }
-            DType::U32 => {
-                // SAFETY: Set later by running the fill kernel.
-                let data = unsafe { self.alloc::<u32>(elem_count) }.w()?;
-                let func = self.get_or_load_func("fill_u32", kernels::FILL)?;
-                let params = (&data, v as u32, elem_count);
-                unsafe { func.launch(cfg, params) }.w()?;
-                CudaStorageSlice::U32(data)
-            }
-            DType::I64 => {
-                // SAFETY: Set later by running the fill kernel.
-                let data = unsafe { self.alloc::<i64>(elem_count) }.w()?;
-                let func = self.get_or_load_func("fill_i64", kernels::FILL)?;
-                let params = (&data, v as i64, elem_count);
-                unsafe { func.launch(cfg, params) }.w()?;
-                CudaStorageSlice::I64(data)
-            }
-            DType::BF16 => {
-                // SAFETY: Set later by running the fill kernel.
-                let data = unsafe { self.alloc::<bf16>(elem_count) }.w()?;
-                let func = self.get_or_load_func("fill_bf16", kernels::FILL)?;
-                let params = (&data, bf16::from_f64(v), elem_count);
-                unsafe { func.launch(cfg, params) }.w()?;
-                CudaStorageSlice::BF16(data)
-            }
-            DType::F16 => {
-                // SAFETY: Set later by running the fill kernel.
-                let data = unsafe { self.alloc::<f16>(elem_count) }.w()?;
-                let func = self.get_or_load_func("fill_f16", kernels::FILL)?;
-                let params = (&data, f16::from_f64(v), elem_count);
-                unsafe { func.launch(cfg, params) }.w()?;
-                CudaStorageSlice::F16(data)
-            }
-            DType::F32 => {
-                // SAFETY: Set later by running the fill kernel.
-                let data = unsafe { self.alloc::<f32>(elem_count) }.w()?;
-                let func = self.get_or_load_func("fill_f32", kernels::FILL)?;
-                let params = (&data, v as f32, elem_count);
-                unsafe { func.launch(cfg, params) }.w()?;
-                CudaStorageSlice::F32(data)
-            }
-            DType::F64 => {
-                // SAFETY: Set later by running the fill kernel.
-                let data = unsafe { self.alloc::<f64>(elem_count) }.w()?;
-                let func = self.get_or_load_func("fill_f64", kernels::FILL)?;
-                let params = (&data, v, elem_count);
-                unsafe { func.launch(cfg, params) }.w()?;
-                CudaStorageSlice::F64(data)
-            }
-        };
-        Ok(CudaStorage {
-            slice,
-            device: self.clone(),
-        })
-    }
-
-    pub fn get_or_load_func(&self, module_name: &str, ptx: &'static str) -> Result<CudaFunction> {
-        if !self.has_func(module_name, module_name) {
-            // Leaking the string here is a bit sad but we need a &'static str and this is only
-            // done once per kernel name.
-            let static_module_name = Box::leak(module_name.to_string().into_boxed_str());
-            self.load_ptx(ptx.into(), module_name, &[static_module_name])
-                .map_err(|cuda| CudaError::Load {
-                    cuda,
-                    module_name: module_name.to_string(),
-                })
-                .w()?;
-        }
-        self.get_func(module_name, module_name)
-            // Clippy recommends this `ok_or` rather than `ok_or_else` so hopefully the compiler is
-            // able to only build the error value if needed.
-            .ok_or(CudaError::MissingKernel {
-                module_name: module_name.to_string(),
-            })
-            .w()
-    }
-}
-
-impl CudaDevice {
-    pub fn new_with_stream(ordinal: usize) -> Result<Self> {
-        let device = cudarc::driver::CudaDevice::new_with_stream(ordinal).w()?;
-        let blas = cudarc::cublas::CudaBlas::new(device.clone()).w()?;
-        let curand = cudarc::curand::CudaRng::new(299792458, device.clone()).w()?;
-        Ok(Self {
-            id: DeviceId::new(),
-            device,
-            blas: Arc::new(blas),
-            curand: Arc::new(Mutex::new(CudaRng(curand))),
-        })
-    }
-}
-
-impl BackendDevice for CudaDevice {
-    type Storage = CudaStorage;
-
-    fn new(ordinal: usize) -> Result<Self> {
-        let device = cudarc::driver::CudaDevice::new(ordinal).w()?;
-        let blas = cudarc::cublas::CudaBlas::new(device.clone()).w()?;
-        let curand = cudarc::curand::CudaRng::new(299792458, device.clone()).w()?;
-        Ok(Self {
-            id: DeviceId::new(),
-            device,
-            blas: Arc::new(blas),
-            curand: Arc::new(Mutex::new(CudaRng(curand))),
-        })
-    }
-
-    fn set_seed(&self, seed: u64) -> Result<()> {
-        // We do not call set_seed but instead create a new curand object. This ensures that the
-        // state will be identical and the same random numbers will be generated.
-        let mut curand = self.curand.lock().unwrap();
-        curand.0 = cudarc::curand::CudaRng::new(seed, self.device.clone()).w()?;
-        Ok(())
-    }
-
-    fn location(&self) -> crate::DeviceLocation {
-        crate::DeviceLocation::Cuda {
-            gpu_id: self.device.ordinal(),
-        }
-    }
-
-    fn same_device(&self, rhs: &Self) -> bool {
-        self.id == rhs.id
-    }
-
-    fn zeros_impl(&self, shape: &Shape, dtype: DType) -> Result<CudaStorage> {
-        let elem_count = shape.elem_count();
-        let slice = match dtype {
-            DType::U8 => {
-                let data = self.alloc_zeros::<u8>(elem_count).w()?;
-                CudaStorageSlice::U8(data)
-            }
-            DType::U32 => {
-                let data = self.alloc_zeros::<u32>(elem_count).w()?;
-                CudaStorageSlice::U32(data)
-            }
-            DType::I64 => {
-                let data = self.alloc_zeros::<i64>(elem_count).w()?;
-                CudaStorageSlice::I64(data)
-            }
-            DType::BF16 => {
-                let data = self.alloc_zeros::<bf16>(elem_count).w()?;
-                CudaStorageSlice::BF16(data)
-            }
-            DType::F16 => {
-                let data = self.alloc_zeros::<f16>(elem_count).w()?;
-                CudaStorageSlice::F16(data)
-            }
-            DType::F32 => {
-                let data = self.alloc_zeros::<f32>(elem_count).w()?;
-                CudaStorageSlice::F32(data)
-            }
-            DType::F64 => {
-                let data = self.alloc_zeros::<f64>(elem_count).w()?;
-                CudaStorageSlice::F64(data)
-            }
-        };
-        Ok(CudaStorage {
-            slice,
-            device: self.clone(),
-        })
-    }
-
-    fn rand_uniform(&self, shape: &Shape, dtype: DType, lo: f64, up: f64) -> Result<CudaStorage> {
-        let elem_count = shape.elem_count();
-        let curand = self.curand.lock().unwrap();
-        let slice = match dtype {
-            // TODO: Add support for F16 and BF16 though this is likely to require some upstream
-            // cudarc changes.
-            DType::U8 | DType::U32 | DType::I64 | DType::F16 | DType::BF16 => {
-                Err(CudaError::UnsupportedDtype {
-                    dtype,
-                    op: "rand_uniform",
-                })
-                .w()?
-            }
-            DType::F32 => {
-                let mut data = unsafe { self.alloc::<f32>(elem_count) }.w()?;
-                curand.0.fill_with_uniform(&mut data).w()?;
-                CudaStorageSlice::F32(data)
-            }
-            DType::F64 => {
-                let mut data = unsafe { self.alloc::<f64>(elem_count) }.w()?;
-                curand.0.fill_with_uniform(&mut data).w()?;
-                CudaStorageSlice::F64(data)
-            }
-        };
-        let slice = if lo == 0. && up == 1.0 {
-            slice
-        } else {
-            use super::utils::Map1;
-            let layout = Layout::contiguous(shape);
-            super::Affine(up - lo, lo).map(&slice, self, &layout)?
-        };
-        Ok(CudaStorage {
-            slice,
-            device: self.clone(),
-        })
-    }
-
-    fn rand_normal(&self, shape: &Shape, dtype: DType, mean: f64, std: f64) -> Result<CudaStorage> {
-        // TODO: Add support for F16 and BF16 though this is likely to require some upstream
-        // cudarc changes.
-        let elem_count = shape.elem_count();
-        let curand = self.curand.lock().unwrap();
-        // curand can only generate an odd number of values.
-        // https://github.com/huggingface/candle/issues/734
-        let elem_count_round = if elem_count % 2 == 1 {
-            elem_count + 1
-        } else {
-            elem_count
-        };
-        let slice = match dtype {
-            DType::U8 | DType::U32 | DType::I64 | DType::F16 | DType::BF16 => {
-                Err(CudaError::UnsupportedDtype {
-                    dtype,
-                    op: "rand_normal",
-                })
-                .w()?
-            }
-            DType::F32 => {
-                let mut data = unsafe { self.alloc::<f32>(elem_count_round) }.w()?;
-                curand
-                    .0
-                    .fill_with_normal(&mut data, mean as f32, std as f32)
-                    .w()?;
-                CudaStorageSlice::F32(data)
-            }
-            DType::F64 => {
-                let mut data = unsafe { self.alloc::<f64>(elem_count_round) }.w()?;
-                curand.0.fill_with_normal(&mut data, mean, std).w()?;
-                CudaStorageSlice::F64(data)
-            }
-        };
-        Ok(CudaStorage {
-            slice,
-            device: self.clone(),
-        })
-    }
-
-    fn ones_impl(&self, shape: &Shape, dtype: DType) -> Result<CudaStorage> {
-        self.const_impl(1., shape, dtype)
-    }
-
-    unsafe fn alloc_uninit(&self, shape: &Shape, dtype: DType) -> Result<Self::Storage> {
-        let elem_count = shape.elem_count();
-        let slice = match dtype {
-            DType::U8 => {
-                let data = self.alloc::<u8>(elem_count).w()?;
-                CudaStorageSlice::U8(data)
-            }
-            DType::U32 => {
-                let data = self.alloc::<u32>(elem_count).w()?;
-                CudaStorageSlice::U32(data)
-            }
-            DType::I64 => {
-                let data = self.alloc::<i64>(elem_count).w()?;
-                CudaStorageSlice::I64(data)
-            }
-            DType::BF16 => {
-                let data = self.alloc::<bf16>(elem_count).w()?;
-                CudaStorageSlice::BF16(data)
-            }
-            DType::F16 => {
-                let data = self.alloc::<f16>(elem_count).w()?;
-                CudaStorageSlice::F16(data)
-            }
-            DType::F32 => {
-                let data = self.alloc::<f32>(elem_count).w()?;
-                CudaStorageSlice::F32(data)
-            }
-            DType::F64 => {
-                let data = self.alloc::<f64>(elem_count).w()?;
-                CudaStorageSlice::F64(data)
-            }
-        };
-        Ok(CudaStorage {
-            slice,
-            device: self.clone(),
-        })
-    }
-
-    fn storage_from_slice<T: crate::WithDType>(&self, s: &[T]) -> Result<Self::Storage> {
-        let slice = match T::cpu_storage_ref(s) {
-            CpuStorageRef::U8(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::U8(data)
-            }
-            CpuStorageRef::U32(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::U32(data)
-            }
-            CpuStorageRef::I64(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::I64(data)
-            }
-            CpuStorageRef::BF16(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::BF16(data)
-            }
-            CpuStorageRef::F16(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::F16(data)
-            }
-            CpuStorageRef::F32(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::F32(data)
-            }
-            CpuStorageRef::F64(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::F64(data)
-            }
-        };
-        Ok(CudaStorage {
-            slice,
-            device: self.clone(),
-        })
-    }
-
-    fn storage_from_cpu_storage(&self, storage: &CpuStorage) -> Result<CudaStorage> {
-        let slice = match storage {
-            CpuStorage::U8(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::U8(data)
-            }
-            CpuStorage::U32(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::U32(data)
-            }
-            CpuStorage::I64(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::I64(data)
-            }
-            CpuStorage::BF16(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::BF16(data)
-            }
-            CpuStorage::F16(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::F16(data)
-            }
-            CpuStorage::F32(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::F32(data)
-            }
-            CpuStorage::F64(storage) => {
-                let data = self.htod_sync_copy(storage).w()?;
-                CudaStorageSlice::F64(data)
-            }
-        };
-        Ok(CudaStorage {
-            slice,
-            device: self.clone(),
-        })
-    }
-
-    fn storage_from_cpu_storage_owned(&self, storage: CpuStorage) -> Result<CudaStorage> {
-        let slice = match storage {
-            CpuStorage::U8(storage) => {
-                let data = self.htod_copy(storage).w()?;
-                CudaStorageSlice::U8(data)
-            }
-            CpuStorage::U32(storage) => {
-                let data = self.htod_copy(storage).w()?;
-                CudaStorageSlice::U32(data)
-            }
-            CpuStorage::I64(storage) => {
-                let data = self.htod_copy(storage).w()?;
-                CudaStorageSlice::I64(data)
-            }
-            CpuStorage::BF16(storage) => {
-                let data = self.htod_copy(storage).w()?;
-                CudaStorageSlice::BF16(data)
-            }
-            CpuStorage::F16(storage) => {
-                let data = self.htod_copy(storage).w()?;
-                CudaStorageSlice::F16(data)
-            }
-            CpuStorage::F32(storage) => {
-                let data = self.htod_copy(storage).w()?;
-                CudaStorageSlice::F32(data)
-            }
-            CpuStorage::F64(storage) => {
-                let data = self.htod_copy(storage).w()?;
-                CudaStorageSlice::F64(data)
-            }
-        };
-        Ok(CudaStorage {
-            slice,
-            device: self.clone(),
-        })
-    }
-
-    fn synchronize(&self) -> Result<()> {
-        self.device.synchronize().map_err(crate::Error::wrap)?;
-        Ok(())
-    }
-}

candle-core/src/cuda_backend/error.rs

@@ -1,62 +0,0 @@
-use crate::{DType, Layout};
-
-/// cudarc related errors
-#[derive(thiserror::Error, Debug)]
-pub enum CudaError {
-    #[error(transparent)]
-    Cuda(#[from] cudarc::driver::DriverError),
-
-    #[error(transparent)]
-    Compiler(#[from] cudarc::nvrtc::CompileError),
-
-    #[error(transparent)]
-    Cublas(#[from] cudarc::cublas::result::CublasError),
-
-    #[error(transparent)]
-    Curand(#[from] cudarc::curand::result::CurandError),
-
-    #[error("missing kernel '{module_name}'")]
-    MissingKernel { module_name: String },
-
-    #[error("unsupported dtype {dtype:?} for {op}")]
-    UnsupportedDtype { dtype: DType, op: &'static str },
-
-    #[error("internal error '{0}'")]
-    InternalError(&'static str),
-
-    #[error("matmul is only supported for contiguous tensors lstride: {lhs_stride:?} rstride: {rhs_stride:?} mnk: {mnk:?}")]
-    MatMulNonContiguous {
-        lhs_stride: Layout,
-        rhs_stride: Layout,
-        mnk: (usize, usize, usize),
-    },
-
-    #[error("{msg}, expected: {expected:?}, got: {got:?}")]
-    UnexpectedDType {
-        msg: &'static str,
-        expected: DType,
-        got: DType,
-    },
-
-    #[error("{cuda} when loading {module_name}")]
-    Load {
-        cuda: cudarc::driver::DriverError,
-        module_name: String,
-    },
-}
-
-impl From<CudaError> for crate::Error {
-    fn from(val: CudaError) -> Self {
-        crate::Error::Cuda(Box::new(val)).bt()
-    }
-}
-
-pub trait WrapErr<O> {
-    fn w(self) -> std::result::Result<O, crate::Error>;
-}
-
-impl<O, E: Into<CudaError>> WrapErr<O> for std::result::Result<O, E> {
-    fn w(self) -> std::result::Result<O, crate::Error> {
-        self.map_err(|e| crate::Error::Cuda(Box::new(e.into())).bt())
-    }
-}

candle-core/src/cuda_backend/utils.rs

@@ -1,172 +0,0 @@
-/// Helper functions to plug cuda kernels in candle.
-use crate::{Layout, Result, Shape, WithDType};
-pub use cudarc;
-use cudarc::driver::{CudaSlice, DeviceRepr, ValidAsZeroBits};
-
-use super::{CudaDevice, CudaError, WrapErr};
-
-pub type S = super::CudaStorageSlice;
-
-pub trait Map1 {
-    fn f<T: DeviceRepr + WithDType + ValidAsZeroBits>(
-        &self,
-        src: &CudaSlice<T>,
-        dev: &CudaDevice,
-        layout: &Layout,
-    ) -> Result<CudaSlice<T>>;
-
-    fn map(&self, s: &S, d: &CudaDevice, l: &Layout) -> Result<S> {
-        let out = match s {
-            S::U8(s) => S::U8(self.f(s, d, l)?),
-            S::U32(s) => S::U32(self.f(s, d, l)?),
-            S::I64(s) => S::I64(self.f(s, d, l)?),
-            S::BF16(s) => S::BF16(self.f(s, d, l)?),
-            S::F16(s) => S::F16(self.f(s, d, l)?),
-            S::F32(s) => S::F32(self.f(s, d, l)?),
-            S::F64(s) => S::F64(self.f(s, d, l)?),
-        };
-        Ok(out)
-    }
-}
-
-pub trait Map2 {
-    fn f<T: DeviceRepr + WithDType + ValidAsZeroBits>(
-        &self,
-        src1: &CudaSlice<T>,
-        layout1: &Layout,
-        src2: &CudaSlice<T>,
-        layout2: &Layout,
-        dev: &CudaDevice,
-    ) -> Result<CudaSlice<T>>;
-
-    fn map(&self, s1: &S, l1: &Layout, s2: &S, l2: &Layout, d: &CudaDevice) -> Result<S> {
-        let out = match (s1, s2) {
-            (S::U8(s1), S::U8(s2)) => S::U8(self.f(s1, l1, s2, l2, d)?),
-            (S::U32(s1), S::U32(s2)) => S::U32(self.f(s1, l1, s2, l2, d)?),
-            (S::I64(s1), S::I64(s2)) => S::I64(self.f(s1, l1, s2, l2, d)?),
-            (S::BF16(s1), S::BF16(s2)) => S::BF16(self.f(s1, l1, s2, l2, d)?),
-            (S::F16(s1), S::F16(s2)) => S::F16(self.f(s1, l1, s2, l2, d)?),
-            (S::F32(s1), S::F32(s2)) => S::F32(self.f(s1, l1, s2, l2, d)?),
-            (S::F64(s1), S::F64(s2)) => S::F64(self.f(s1, l1, s2, l2, d)?),
-            _ => Err(CudaError::InternalError("dtype mismatch in binary op"))?,
-        };
-        Ok(out)
-    }
-}
-
-pub trait Map3 {
-    #[allow(clippy::too_many_arguments)]
-    fn f<T: DeviceRepr + WithDType + ValidAsZeroBits>(
-        &self,
-        src1: &CudaSlice<T>,
-        layout1: &Layout,
-        src2: &CudaSlice<T>,
-        layout2: &Layout,
-        src3: &CudaSlice<T>,
-        layout3: &Layout,
-        dev: &CudaDevice,
-    ) -> Result<CudaSlice<T>>;
-
-    #[allow(clippy::too_many_arguments)]
-    fn map(
-        &self,
-        s1: &S,
-        l1: &Layout,
-        s2: &S,
-        l2: &Layout,
-        s3: &S,
-        l3: &Layout,
-        d: &CudaDevice,
-    ) -> Result<S> {
-        let out = match (s1, s2, s3) {
-            (S::U8(s1), S::U8(s2), S::U8(s3)) => S::U8(self.f(s1, l1, s2, l2, s3, l3, d)?),
-            (S::U32(s1), S::U32(s2), S::U32(s3)) => S::U32(self.f(s1, l1, s2, l2, s3, l3, d)?),
-            (S::I64(s1), S::I64(s2), S::I64(s3)) => S::I64(self.f(s1, l1, s2, l2, s3, l3, d)?),
-            (S::BF16(s1), S::BF16(s2), S::BF16(s3)) => S::BF16(self.f(s1, l1, s2, l2, s3, l3, d)?),
-            (S::F16(s1), S::F16(s2), S::F16(s3)) => S::F16(self.f(s1, l1, s2, l2, s3, l3, d)?),
-            (S::F32(s1), S::F32(s2), S::F32(s3)) => S::F32(self.f(s1, l1, s2, l2, s3, l3, d)?),
-            (S::F64(s1), S::F64(s2), S::F64(s3)) => S::F64(self.f(s1, l1, s2, l2, s3, l3, d)?),
-            _ => Err(CudaError::InternalError("dtype mismatch in ternary op"))?,
-        };
-        Ok(out)
-    }
-}
-
-pub trait Map2InPlace {
-    fn f<T: DeviceRepr + WithDType + ValidAsZeroBits>(
-        &self,
-        dst: &mut CudaSlice<T>,
-        dst_shape: &Shape,
-        src: &CudaSlice<T>,
-        src_l: &Layout,
-        dev: &CudaDevice,
-    ) -> Result<()>;
-
-    fn map(
-        &self,
-        dst: &mut S,
-        dst_s: &Shape,
-        src: &S,
-        src_l: &Layout,
-        d: &CudaDevice,
-    ) -> Result<()> {
-        match (dst, src) {
-            (S::U8(dst), S::U8(src)) => self.f(dst, dst_s, src, src_l, d),
-            (S::U32(dst), S::U32(src)) => self.f(dst, dst_s, src, src_l, d),
-            (S::I64(dst), S::I64(src)) => self.f(dst, dst_s, src, src_l, d),
-            (S::BF16(dst), S::BF16(src)) => self.f(dst, dst_s, src, src_l, d),
-            (S::F16(dst), S::F16(src)) => self.f(dst, dst_s, src, src_l, d),
-            (S::F32(dst), S::F32(src)) => self.f(dst, dst_s, src, src_l, d),
-            (S::F64(dst), S::F64(src)) => self.f(dst, dst_s, src, src_l, d),
-            _ => Err(CudaError::InternalError("dtype mismatch in binary op"))?,
-        }
-    }
-}
-
-pub trait Map1Any {
-    fn f<T: DeviceRepr + WithDType + ValidAsZeroBits, W: Fn(CudaSlice<T>) -> S>(
-        &self,
-        src: &CudaSlice<T>,
-        dev: &CudaDevice,
-        layout: &Layout,
-        wrap: W,
-    ) -> Result<S>;
-
-    fn map(&self, s: &S, d: &CudaDevice, l: &Layout) -> Result<S> {
-        let out = match s {
-            S::U8(s) => self.f(s, d, l, S::U8)?,
-            S::U32(s) => self.f(s, d, l, S::U32)?,
-            S::I64(s) => self.f(s, d, l, S::I64)?,
-            S::BF16(s) => self.f(s, d, l, S::BF16)?,
-            S::F16(s) => self.f(s, d, l, S::F16)?,
-            S::F32(s) => self.f(s, d, l, S::F32)?,
-            S::F64(s) => self.f(s, d, l, S::F64)?,
-        };
-        Ok(out)
-    }
-}
-
-pub trait Map2Any {
-    fn f<T: DeviceRepr + WithDType + ValidAsZeroBits>(
-        &self,
-        src1: &CudaSlice<T>,
-        layout1: &Layout,
-        src2: &CudaSlice<T>,
-        layout2: &Layout,
-        dev: &CudaDevice,
-    ) -> Result<S>;
-
-    fn map(&self, s1: &S, l1: &Layout, s2: &S, l2: &Layout, d: &CudaDevice) -> Result<S> {
-        let out = match (s1, s2) {
-            (S::U8(s1), S::U8(s2)) => self.f(s1, l1, s2, l2, d)?,
-            (S::U32(s1), S::U32(s2)) => self.f(s1, l1, s2, l2, d)?,
-            (S::I64(s1), S::I64(s2)) => self.f(s1, l1, s2, l2, d)?,
-            (S::BF16(s1), S::BF16(s2)) => self.f(s1, l1, s2, l2, d)?,
-            (S::F16(s1), S::F16(s2)) => self.f(s1, l1, s2, l2, d)?,
-            (S::F32(s1), S::F32(s2)) => self.f(s1, l1, s2, l2, d)?,
-            (S::F64(s1), S::F64(s2)) => self.f(s1, l1, s2, l2, d)?,
-            _ => Err(CudaError::InternalError("dtype mismatch in binary op")).w()?,
-        };
-        Ok(out)
-    }
-}

candle-core/src/cudnn.rs

@@ -1,6 +1,6 @@
 use crate::WithDType;
 use cudarc;
-use cudarc::cudnn::safe::{ConvForward, Cudnn};
+use cudarc::cudnn::safe::{Conv2dForward, Cudnn};
 use cudarc::driver::{CudaSlice, CudaView, DeviceRepr, ValidAsZeroBits};
 use std::cell::RefCell;
 use std::collections::HashMap;
@@ -26,7 +26,6 @@ impl From<cudarc::driver::DriverError> for crate::Error {
 
 pub(crate) fn launch_conv2d<
     T: DeviceRepr + WithDType + ValidAsZeroBits + cudarc::cudnn::CudnnDataType,
-    Y: cudarc::cudnn::CudnnDataType,
 >(
     src: &CudaView<T>,
     src_l: &crate::Layout,
@@ -49,7 +48,7 @@ pub(crate) fn launch_conv2d<
         }
         c
     })?;
-    let conv = cudnn.create_conv2d::<Y>(
+    let conv = cudnn.create_conv2d::<T>(
         /* pad */ [params.padding as i32, params.padding as i32],
         /* stride */ [params.stride as i32, params.stride as i32],
         /* dilation */ [params.dilation as i32, params.dilation as i32],
@@ -63,18 +62,18 @@ pub(crate) fn launch_conv2d<
     ];
     // Note that `src` already starts at the proper offset.
     let x = if src_l.is_contiguous() {
-        cudnn.create_4d_tensor::<T>(
+        cudnn.create_4d_tensor(
             cudarc::cudnn::sys::cudnnTensorFormat_t::CUDNN_TENSOR_NCHW,
             x_shape,
         )?
     } else {
         let s = src_l.stride();
-        cudnn.create_4d_tensor_ex::<T>(
+        cudnn.create_4d_tensor_ex(
             x_shape,
             [s[0] as i32, s[1] as i32, s[2] as i32, s[3] as i32],
         )?
     };
-    let w = cudnn.create_4d_filter::<T>(
+    let w = cudnn.create_4d_filter(
         cudarc::cudnn::sys::cudnnTensorFormat_t::CUDNN_TENSOR_NCHW,
         [
             params.c_out as i32,
@@ -84,11 +83,11 @@ pub(crate) fn launch_conv2d<
         ],
     )?;
     let (w_out, h_out) = (params.out_w() as i32, params.out_h() as i32);
-    let y = cudnn.create_4d_tensor::<T>(
+    let y = cudnn.create_4d_tensor(
         cudarc::cudnn::sys::cudnnTensorFormat_t::CUDNN_TENSOR_NCHW,
         [params.b_size as i32, params.c_out as i32, h_out, w_out],
     )?;
-    let conv2d = ConvForward {
+    let conv2d = Conv2dForward {
         conv: &conv,
         x: &x,
         w: &w,

candle-core/src/custom_op.rs

@@ -1,484 +0,0 @@
-use crate::op::{BackpropOp, Op};
-use crate::tensor::from_storage;
-use crate::{CpuStorage, CudaStorage, Layout, MetalStorage, Result, Shape, Tensor};
-use std::sync::Arc;
-
-/// Unary ops that can be defined in user-land.
-pub trait CustomOp1 {
-    // Box<dyn> does not support const yet, so use a function to get the name.
-    fn name(&self) -> &'static str;
-
-    /// The forward pass, as run on a cpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn cpu_fwd(&self, storage: &CpuStorage, layout: &Layout) -> Result<(CpuStorage, Shape)>;
-
-    /// The forward pass, as run on a gpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn cuda_fwd(&self, _storage: &CudaStorage, _layout: &Layout) -> Result<(CudaStorage, Shape)> {
-        Err(crate::Error::Cuda(
-            format!("no cuda implementation for {}", self.name()).into(),
-        ))
-    }
-
-    /// The forward pass, as run on a metal gpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn metal_fwd(
-        &self,
-        _storage: &MetalStorage,
-        _layout: &Layout,
-    ) -> Result<(MetalStorage, Shape)> {
-        Err(crate::Error::Metal(
-            format!("no metal implementation for {}", self.name()).into(),
-        ))
-    }
-
-    /// This function takes as argument the argument `arg` used in the forward pass, the result
-    /// produced by the forward operation `res` and the gradient of the result `grad_res`.
-    /// The function should return the gradient of the argument.
-    fn bwd(&self, _arg: &Tensor, _res: &Tensor, _grad_res: &Tensor) -> Result<Option<Tensor>> {
-        Err(crate::Error::BackwardNotSupported { op: self.name() })
-    }
-}
-
-pub trait CustomOp2 {
-    fn name(&self) -> &'static str;
-
-    /// The forward pass, as run on a cpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn cpu_fwd(
-        &self,
-        s1: &CpuStorage,
-        l1: &Layout,
-        s2: &CpuStorage,
-        l2: &Layout,
-    ) -> Result<(CpuStorage, Shape)>;
-
-    /// The forward pass, as run on a gpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn cuda_fwd(
-        &self,
-        _: &CudaStorage,
-        _: &Layout,
-        _: &CudaStorage,
-        _: &Layout,
-    ) -> Result<(CudaStorage, Shape)> {
-        Err(crate::Error::Cuda(
-            format!("no cuda implementation for {}", self.name()).into(),
-        ))
-    }
-
-    /// The forward pass, as run on a metal gpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn metal_fwd(
-        &self,
-        _: &MetalStorage,
-        _: &Layout,
-        _: &MetalStorage,
-        _: &Layout,
-    ) -> Result<(MetalStorage, Shape)> {
-        Err(crate::Error::Metal(
-            format!("no metal implementation for {}", self.name()).into(),
-        ))
-    }
-
-    fn bwd(
-        &self,
-        _arg1: &Tensor,
-        _arg2: &Tensor,
-        _res: &Tensor,
-        _grad_res: &Tensor,
-    ) -> Result<(Option<Tensor>, Option<Tensor>)> {
-        Err(crate::Error::BackwardNotSupported { op: self.name() })
-    }
-}
-
-pub trait CustomOp3 {
-    fn name(&self) -> &'static str;
-
-    /// The forward pass, as run on a cpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn cpu_fwd(
-        &self,
-        s1: &CpuStorage,
-        l1: &Layout,
-        s2: &CpuStorage,
-        l2: &Layout,
-        s3: &CpuStorage,
-        l3: &Layout,
-    ) -> Result<(CpuStorage, Shape)>;
-
-    /// The forward pass, as run on a gpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn cuda_fwd(
-        &self,
-        _: &CudaStorage,
-        _: &Layout,
-        _: &CudaStorage,
-        _: &Layout,
-        _: &CudaStorage,
-        _: &Layout,
-    ) -> Result<(CudaStorage, Shape)> {
-        Err(crate::Error::Cuda(
-            format!("no cuda implementation for {}", self.name()).into(),
-        ))
-    }
-
-    /// The forward pass, as run on a metal gpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn metal_fwd(
-        &self,
-        _: &MetalStorage,
-        _: &Layout,
-        _: &MetalStorage,
-        _: &Layout,
-        _: &MetalStorage,
-        _: &Layout,
-    ) -> Result<(MetalStorage, Shape)> {
-        Err(crate::Error::Metal(
-            format!("no metal implementation for {}", self.name()).into(),
-        ))
-    }
-
-    fn bwd(
-        &self,
-        _arg1: &Tensor,
-        _arg2: &Tensor,
-        _arg3: &Tensor,
-        _res: &Tensor,
-        _grad_res: &Tensor,
-    ) -> Result<(Option<Tensor>, Option<Tensor>, Option<Tensor>)> {
-        Err(crate::Error::BackwardNotSupported { op: self.name() })
-    }
-}
-
-impl Tensor {
-    /// Applies a unary custom op without backward support
-    pub fn apply_op1_no_bwd<C: CustomOp1>(&self, c: &C) -> Result<Self> {
-        let (storage, shape) = self.storage().apply_op1(self.layout(), c)?;
-        Ok(from_storage(storage, shape, BackpropOp::none(), false))
-    }
-
-    /// Applies a binary custom op without backward support
-    pub fn apply_op2_no_bwd<C: CustomOp2>(&self, rhs: &Self, c: &C) -> Result<Self> {
-        let (storage, shape) =
-            self.storage()
-                .apply_op2(self.layout(), &rhs.storage(), rhs.layout(), c)?;
-        Ok(from_storage(storage, shape, BackpropOp::none(), false))
-    }
-
-    /// Applies a ternary custom op without backward support
-    pub fn apply_op3_no_bwd<C: CustomOp3>(&self, t2: &Self, t3: &Self, c: &C) -> Result<Self> {
-        let (storage, shape) = self.storage().apply_op3(
-            self.layout(),
-            &t2.storage(),
-            t2.layout(),
-            &t3.storage(),
-            t3.layout(),
-            c,
-        )?;
-        Ok(from_storage(storage, shape, BackpropOp::none(), false))
-    }
-
-    /// Applies a unary custom op.
-    pub fn apply_op1_arc(&self, c: Arc<Box<dyn CustomOp1 + Send + Sync>>) -> Result<Self> {
-        let (storage, shape) = self
-            .storage()
-            .apply_op1(self.layout(), c.as_ref().as_ref())?;
-        let op = BackpropOp::new1(self, |s| Op::CustomOp1(s, c.clone()));
-        Ok(from_storage(storage, shape, op, false))
-    }
-
-    pub fn apply_op1<C: 'static + CustomOp1 + Send + Sync>(&self, c: C) -> Result<Self> {
-        self.apply_op1_arc(Arc::new(Box::new(c)))
-    }
-
-    /// Applies a binary custom op.
-    pub fn apply_op2_arc(
-        &self,
-        rhs: &Self,
-        c: Arc<Box<dyn CustomOp2 + Send + Sync>>,
-    ) -> Result<Self> {
-        let (storage, shape) = self.storage().apply_op2(
-            self.layout(),
-            &rhs.storage(),
-            rhs.layout(),
-            c.as_ref().as_ref(),
-        )?;
-        let op = BackpropOp::new2(self, rhs, |t1, t2| Op::CustomOp2(t1, t2, c.clone()));
-        Ok(from_storage(storage, shape, op, false))
-    }
-
-    pub fn apply_op2<C: 'static + CustomOp2 + Send + Sync>(&self, r: &Self, c: C) -> Result<Self> {
-        self.apply_op2_arc(r, Arc::new(Box::new(c)))
-    }
-
-    /// Applies a ternary custom op.
-    pub fn apply_op3_arc(
-        &self,
-        t2: &Self,
-        t3: &Self,
-        c: Arc<Box<dyn CustomOp3 + Send + Sync>>,
-    ) -> Result<Self> {
-        let (storage, shape) = self.storage().apply_op3(
-            self.layout(),
-            &t2.storage(),
-            t2.layout(),
-            &t3.storage(),
-            t3.layout(),
-            c.as_ref().as_ref(),
-        )?;
-        let op = BackpropOp::new3(self, t2, t3, |t1, t2, t3| {
-            Op::CustomOp3(t1, t2, t3, c.clone())
-        });
-        Ok(from_storage(storage, shape, op, false))
-    }
-
-    pub fn apply_op3<C: 'static + CustomOp3 + Send + Sync>(
-        &self,
-        t2: &Self,
-        t3: &Self,
-        c: C,
-    ) -> Result<Self> {
-        self.apply_op3_arc(t2, t3, Arc::new(Box::new(c)))
-    }
-}
-
-// In place ops.
-
-/// Unary ops that can be defined in user-land.
-/// These ops work in place and as such back-prop is unsupported.
-pub trait InplaceOp1 {
-    // Box<dyn> does not support const yet, so use a function to get the name.
-    fn name(&self) -> &'static str;
-
-    /// The forward pass, as run on a cpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn cpu_fwd(&self, storage: &mut CpuStorage, layout: &Layout) -> Result<()>;
-
-    /// The forward pass, as run on a gpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn cuda_fwd(&self, _storage: &mut CudaStorage, _layout: &Layout) -> Result<()> {
-        Err(crate::Error::Cuda(
-            format!("no cuda implementation for {}", self.name()).into(),
-        ))
-    }
-
-    /// The forward pass, as run on a metal gpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn metal_fwd(&self, _storage: &mut MetalStorage, _layout: &Layout) -> Result<()> {
-        Err(crate::Error::Metal(
-            format!("no metal implementation for {}", self.name()).into(),
-        ))
-    }
-}
-
-pub trait InplaceOp2 {
-    fn name(&self) -> &'static str;
-
-    /// The forward pass, as run on a cpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn cpu_fwd(&self, s1: &mut CpuStorage, l1: &Layout, s2: &CpuStorage, l2: &Layout)
-        -> Result<()>;
-
-    /// The forward pass, as run on a gpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn cuda_fwd(&self, _: &mut CudaStorage, _: &Layout, _: &CudaStorage, _: &Layout) -> Result<()> {
-        Err(crate::Error::Cuda(
-            format!("no cuda implementation for {}", self.name()).into(),
-        ))
-    }
-
-    /// The forward pass, as run on a metal gpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn metal_fwd(
-        &self,
-        _: &mut MetalStorage,
-        _: &Layout,
-        _: &MetalStorage,
-        _: &Layout,
-    ) -> Result<()> {
-        Err(crate::Error::Metal(
-            format!("no metal implementation for {}", self.name()).into(),
-        ))
-    }
-}
-
-pub trait InplaceOp3 {
-    fn name(&self) -> &'static str;
-
-    /// The forward pass, as run on a cpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn cpu_fwd(
-        &self,
-        s1: &mut CpuStorage,
-        l1: &Layout,
-        s2: &CpuStorage,
-        l2: &Layout,
-        s3: &CpuStorage,
-        l3: &Layout,
-    ) -> Result<()>;
-
-    /// The forward pass, as run on a gpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn cuda_fwd(
-        &self,
-        _: &mut CudaStorage,
-        _: &Layout,
-        _: &CudaStorage,
-        _: &Layout,
-        _: &CudaStorage,
-        _: &Layout,
-    ) -> Result<()> {
-        Err(crate::Error::Cuda(
-            format!("no cuda implementation for {}", self.name()).into(),
-        ))
-    }
-
-    /// The forward pass, as run on a metal gpu device. Note that the storage can use arbitrary strides,
-    /// offsets etc so the associated layout should be used to access it.
-    fn metal_fwd(
-        &self,
-        _: &mut MetalStorage,
-        _: &Layout,
-        _: &MetalStorage,
-        _: &Layout,
-        _: &MetalStorage,
-        _: &Layout,
-    ) -> Result<()> {
-        Err(crate::Error::Metal(
-            format!("no metal implementation for {}", self.name()).into(),
-        ))
-    }
-}
-
-impl Tensor {
-    /// Applies a unary custom op in place.
-    pub fn inplace_op1<C: InplaceOp1>(&self, c: &C) -> Result<()> {
-        self.storage_mut().inplace_op1(self.layout(), c)
-    }
-
-    /// Applies a unary custom op in place (for the first tensor).
-    pub fn inplace_op2<C: InplaceOp2>(&self, rhs: &Self, c: &C) -> Result<()> {
-        self.storage_mut()
-            .inplace_op2(self.layout(), &rhs.storage(), rhs.layout(), c)
-    }
-
-    /// Applies a ternary custom op in place (for the first tensor).
-    pub fn inplace_op3<C: InplaceOp3>(&self, t2: &Self, t3: &Self, c: &C) -> Result<()> {
-        self.storage_mut().inplace_op3(
-            self.layout(),
-            &t2.storage(),
-            t2.layout(),
-            &t3.storage(),
-            t3.layout(),
-            c,
-        )
-    }
-}
-
-pub struct UgIOp1 {
-    name: &'static str,
-    #[cfg(feature = "cuda")]
-    func: cudarc::driver::CudaFunction,
-    #[cfg(feature = "metal")]
-    func: metal::ComputePipelineState,
-}
-
-impl UgIOp1 {
-    #[allow(unused)]
-    pub fn new(
-        name: &'static str,
-        kernel: ug::lang::ssa::Kernel,
-        device: &crate::Device,
-    ) -> Result<Self> {
-        #[cfg(feature = "cuda")]
-        {
-            let device = device.as_cuda_device()?;
-            let func = device.compile(name, kernel)?;
-            Ok(Self { name, func })
-        }
-        #[cfg(feature = "metal")]
-        {
-            let device = device.as_metal_device()?;
-            let func = device.compile(name, kernel)?;
-            Ok(Self { name, func })
-        }
-        #[cfg(not(any(feature = "cuda", feature = "metal")))]
-        {
-            Ok(Self { name })
-        }
-    }
-}
-
-impl InplaceOp1 for UgIOp1 {
-    fn name(&self) -> &'static str {
-        self.name
-    }
-
-    fn cpu_fwd(&self, _: &mut CpuStorage, _: &Layout) -> Result<()> {
-        crate::bail!("ug ops are only supported on metal/cuda at the moment")
-    }
-
-    #[cfg(feature = "metal")]
-    fn metal_fwd(&self, sto: &mut MetalStorage, layout: &Layout) -> Result<()> {
-        use crate::backend::BackendStorage;
-        use candle_metal_kernels::utils::EncoderProvider;
-
-        let elem_count = layout.shape().elem_count();
-        if sto.dtype() != crate::DType::F32 {
-            // TODO: support more dtypes.
-            crate::bail!("input is not a f32 tensor")
-        }
-        let device = sto.device();
-        println!("here");
-        let command_buffer = device.command_buffer()?;
-        let command_buffer = &command_buffer;
-        let encoder = command_buffer.encoder();
-        let encoder = encoder.as_ref();
-        encoder.set_compute_pipeline_state(&self.func);
-        let (g, b) = if elem_count % 32 == 0 {
-            (elem_count / 32, 32)
-        } else {
-            (elem_count, 1)
-        };
-        let grid_dims = metal::MTLSize {
-            width: g as u64,
-            height: 1,
-            depth: 1,
-        };
-        let group_dims = candle_metal_kernels::utils::get_block_dims(b as u64, 1, 1);
-        candle_metal_kernels::utils::set_param(encoder, 0, (sto.buffer(), 0usize));
-
-        encoder.use_resource(sto.buffer(), metal::MTLResourceUsage::Write);
-        encoder.dispatch_threads(grid_dims, group_dims);
-
-        Ok(())
-    }
-
-    #[cfg(feature = "cuda")]
-    fn cuda_fwd(&self, sto: &mut CudaStorage, layout: &Layout) -> Result<()> {
-        use crate::cuda_backend::WrapErr;
-        use cudarc::driver::LaunchAsync;
-
-        let elem_count = layout.shape().elem_count();
-        // TODO: support more dtypes.
-        let sto = sto.as_cuda_slice::<f32>()?;
-        let sto = match layout.contiguous_offsets() {
-            None => crate::bail!("input has to be contiguous"),
-            Some((o1, o2)) => sto.slice(o1..o2),
-        };
-        let params = (&sto,);
-        let (g, b) = if elem_count % 32 == 0 {
-            (elem_count / 32, 32)
-        } else {
-            (elem_count, 1)
-        };
-        let cfg = cudarc::driver::LaunchConfig {
-            grid_dim: (g as u32, 1, 1),
-            block_dim: (b as u32, 1, 1),
-            shared_mem_bytes: 0,
-        };
-        unsafe { self.func.clone().launch(cfg, params) }.w()?;
-        Ok(())
-    }
-}

candle-core/src/device.rs

@@ -8,15 +8,12 @@ use crate::{CpuStorage, DType, Result, Shape, Storage, WithDType};
 pub enum DeviceLocation {
     Cpu,
     Cuda { gpu_id: usize },
-    Metal { gpu_id: usize },
 }
 
-/// Cpu, Cuda, or Metal
 #[derive(Debug, Clone)]
 pub enum Device {
     Cpu,
     Cuda(crate::CudaDevice),
-    Metal(crate::MetalDevice),
 }
 
 pub trait NdArray {
@@ -131,35 +128,10 @@ impl Device {
         Ok(Self::Cuda(crate::CudaDevice::new(ordinal)?))
     }
 
-    pub fn as_cuda_device(&self) -> Result<&crate::CudaDevice> {
-        match self {
-            Self::Cuda(d) => Ok(d),
-            Self::Cpu => crate::bail!("expected a cuda device, got cpu"),
-            Self::Metal(_) => crate::bail!("expected a cuda device, got Metal"),
-        }
-    }
-
-    pub fn as_metal_device(&self) -> Result<&crate::MetalDevice> {
-        match self {
-            Self::Cuda(_) => crate::bail!("expected a metal device, got cuda"),
-            Self::Cpu => crate::bail!("expected a metal device, got cpu"),
-            Self::Metal(d) => Ok(d),
-        }
-    }
-
-    pub fn new_cuda_with_stream(ordinal: usize) -> Result<Self> {
-        Ok(Self::Cuda(crate::CudaDevice::new_with_stream(ordinal)?))
-    }
-
-    pub fn new_metal(ordinal: usize) -> Result<Self> {
-        Ok(Self::Metal(crate::MetalDevice::new(ordinal)?))
-    }
-
     pub fn set_seed(&self, seed: u64) -> Result<()> {
         match self {
-            Self::Cpu => CpuDevice.set_seed(seed),
+            Self::Cpu => crate::cpu_backend::CpuDevice.set_seed(seed),
             Self::Cuda(c) => c.set_seed(seed),
-            Self::Metal(m) => m.set_seed(seed),
         }
     }
 
@@ -167,7 +139,6 @@ impl Device {
         match (self, rhs) {
             (Self::Cpu, Self::Cpu) => true,
             (Self::Cuda(lhs), Self::Cuda(rhs)) => lhs.same_device(rhs),
-            (Self::Metal(lhs), Self::Metal(rhs)) => lhs.same_device(rhs),
             _ => false,
         }
     }
@@ -176,35 +147,20 @@ impl Device {
         match self {
             Self::Cpu => DeviceLocation::Cpu,
             Self::Cuda(device) => device.location(),
-            Device::Metal(device) => device.location(),
         }
     }
 
     pub fn is_cpu(&self) -> bool {
-        matches!(self, Self::Cpu)
-    }
-
-    pub fn is_cuda(&self) -> bool {
-        matches!(self, Self::Cuda(_))
-    }
-
-    pub fn is_metal(&self) -> bool {
-        matches!(self, Self::Metal(_))
-    }
-
-    pub fn supports_bf16(&self) -> bool {
         match self {
-            Self::Cuda(_) | Self::Metal(_) => true,
-            Self::Cpu => false,
+            Self::Cpu => true,
+            Self::Cuda(_) => false,
         }
     }
 
-    /// Return `BF16` for devices that support it, otherwise default to `F32`.
-    pub fn bf16_default_to_f32(&self) -> DType {
-        if self.supports_bf16() {
-            DType::BF16
-        } else {
-            DType::F32
+    pub fn is_cuda(&self) -> bool {
+        match self {
+            Self::Cpu => false,
+            Self::Cuda(_) => true,
         }
     }
 
@@ -229,18 +185,8 @@ impl Device {
                 Ok(Storage::Cpu(storage))
             }
             Device::Cuda(device) => {
-                // TODO: Remove the special case if we start supporting generating f16/bf16 directly.
-                if dtype == DType::F16 || dtype == DType::BF16 {
-                    let storage = device.rand_uniform(shape, DType::F32, lo, up)?;
-                    Storage::Cuda(storage).to_dtype(&crate::Layout::contiguous(shape), dtype)
-                } else {
-                    let storage = device.rand_uniform(shape, dtype, lo, up)?;
-                    Ok(Storage::Cuda(storage))
-                }
-            }
-            Device::Metal(device) => {
                 let storage = device.rand_uniform(shape, dtype, lo, up)?;
-                Ok(Storage::Metal(storage))
+                Ok(Storage::Cuda(storage))
             }
         }
     }
@@ -267,18 +213,8 @@ impl Device {
                 Ok(Storage::Cpu(storage))
             }
             Device::Cuda(device) => {
-                // TODO: Remove the special case if we start supporting generating f16/bf16 directly.
-                if dtype == DType::F16 || dtype == DType::BF16 {
-                    let storage = device.rand_normal(shape, DType::F32, mean, std)?;
-                    Storage::Cuda(storage).to_dtype(&crate::Layout::contiguous(shape), dtype)
-                } else {
-                    let storage = device.rand_normal(shape, dtype, mean, std)?;
-                    Ok(Storage::Cuda(storage))
-                }
-            }
-            Device::Metal(device) => {
                 let storage = device.rand_normal(shape, dtype, mean, std)?;
-                Ok(Storage::Metal(storage))
+                Ok(Storage::Cuda(storage))
             }
         }
     }
@@ -302,10 +238,6 @@ impl Device {
                 let storage = device.ones_impl(shape, dtype)?;
                 Ok(Storage::Cuda(storage))
             }
-            Device::Metal(device) => {
-                let storage = device.ones_impl(shape, dtype)?;
-                Ok(Storage::Metal(storage))
-            }
         }
     }
 
@@ -319,41 +251,6 @@ impl Device {
                 let storage = device.zeros_impl(shape, dtype)?;
                 Ok(Storage::Cuda(storage))
             }
-            Device::Metal(device) => {
-                let storage = device.zeros_impl(shape, dtype)?;
-                Ok(Storage::Metal(storage))
-            }
-        }
-    }
-
-    pub(crate) unsafe fn alloc_uninit(&self, shape: &Shape, dtype: DType) -> Result<Storage> {
-        match self {
-            Device::Cpu => {
-                let storage = CpuDevice.alloc_uninit(shape, dtype)?;
-                Ok(Storage::Cpu(storage))
-            }
-            Device::Cuda(device) => {
-                let storage = device.alloc_uninit(shape, dtype)?;
-                Ok(Storage::Cuda(storage))
-            }
-            Device::Metal(device) => {
-                let storage = device.alloc_uninit(shape, dtype)?;
-                Ok(Storage::Metal(storage))
-            }
-        }
-    }
-
-    pub(crate) fn storage_from_slice<D: WithDType>(&self, data: &[D]) -> Result<Storage> {
-        match self {
-            Device::Cpu => Ok(Storage::Cpu(data.to_cpu_storage())),
-            Device::Cuda(device) => {
-                let storage = device.storage_from_slice(data)?;
-                Ok(Storage::Cuda(storage))
-            }
-            Device::Metal(device) => {
-                let storage = device.storage_from_slice(data)?;
-                Ok(Storage::Metal(storage))
-            }
         }
     }
 
@@ -362,14 +259,9 @@ impl Device {
             Device::Cpu => Ok(Storage::Cpu(array.to_cpu_storage())),
             Device::Cuda(device) => {
                 let storage = array.to_cpu_storage();
-                let storage = device.storage_from_cpu_storage_owned(storage)?;
+                let storage = device.storage_from_cpu_storage(&storage)?;
                 Ok(Storage::Cuda(storage))
             }
-            Device::Metal(device) => {
-                let storage = array.to_cpu_storage();
-                let storage = device.storage_from_cpu_storage_owned(storage)?;
-                Ok(Storage::Metal(storage))
-            }
         }
     }
 
@@ -378,22 +270,9 @@ impl Device {
             Device::Cpu => Ok(Storage::Cpu(S::to_cpu_storage_owned(data))),
             Device::Cuda(device) => {
                 let storage = S::to_cpu_storage_owned(data);
-                let storage = device.storage_from_cpu_storage_owned(storage)?;
+                let storage = device.storage_from_cpu_storage(&storage)?;
                 Ok(Storage::Cuda(storage))
             }
-            Device::Metal(device) => {
-                let storage = S::to_cpu_storage_owned(data);
-                let storage = device.storage_from_cpu_storage_owned(storage)?;
-                Ok(Storage::Metal(storage))
-            }
-        }
-    }
-
-    pub fn synchronize(&self) -> Result<()> {
-        match self {
-            Self::Cpu => Ok(()),
-            Self::Cuda(d) => d.synchronize(),
-            Self::Metal(d) => d.synchronize(),
         }
     }
 }

candle-core/src/display.rs

@@ -1,7 +1,6 @@
-//! Pretty printing of tensors
-//!
-//! This implementation should be in line with the [PyTorch version](https://github.com/pytorch/pytorch/blob/7b419e8513a024e172eae767e24ec1b849976b13/torch/_tensor_str.py).
-//!
+/// Pretty printing of tensors
+/// This implementation should be in line with the PyTorch version.
+/// https://github.com/pytorch/pytorch/blob/7b419e8513a024e172eae767e24ec1b849976b13/torch/_tensor_str.py
 use crate::{DType, Result, Tensor, WithDType};
 use half::{bf16, f16};
 
@@ -15,9 +14,6 @@ impl Tensor {
             crate::DeviceLocation::Cuda { gpu_id } => {
                 format!(", cuda:{}", gpu_id)
             }
-            crate::DeviceLocation::Metal { gpu_id } => {
-                format!(", metal:{}", gpu_id)
-            }
         };
 
         write!(f, "Tensor[")?;
@@ -66,13 +62,12 @@ impl std::fmt::Debug for Tensor {
 }
 
 /// Options for Tensor pretty printing
-#[derive(Debug, Clone)]
 pub struct PrinterOptions {
-    pub precision: usize,
-    pub threshold: usize,
-    pub edge_items: usize,
-    pub line_width: usize,
-    pub sci_mode: Option<bool>,
+    precision: usize,
+    threshold: usize,
+    edge_items: usize,
+    line_width: usize,
+    sci_mode: Option<bool>,
 }
 
 static PRINT_OPTS: std::sync::Mutex<PrinterOptions> =
@@ -91,10 +86,6 @@ impl PrinterOptions {
     }
 }
 
-pub fn print_options() -> &'static std::sync::Mutex<PrinterOptions> {
-    &PRINT_OPTS
-}
-
 pub fn set_print_options(options: PrinterOptions) {
     *PRINT_OPTS.lock().unwrap() = options
 }
@@ -123,26 +114,6 @@ pub fn set_print_options_full() {
     }
 }
 
-pub fn set_line_width(line_width: usize) {
-    PRINT_OPTS.lock().unwrap().line_width = line_width
-}
-
-pub fn set_precision(precision: usize) {
-    PRINT_OPTS.lock().unwrap().precision = precision
-}
-
-pub fn set_edge_items(edge_items: usize) {
-    PRINT_OPTS.lock().unwrap().edge_items = edge_items
-}
-
-pub fn set_threshold(threshold: usize) {
-    PRINT_OPTS.lock().unwrap().threshold = threshold
-}
-
-pub fn set_sci_mode(sci_mode: Option<bool>) {
-    PRINT_OPTS.lock().unwrap().sci_mode = sci_mode
-}
-
 struct FmtSize {
     current_size: usize,
 }
@@ -505,9 +476,6 @@ impl std::fmt::Display for Tensor {
             crate::DeviceLocation::Cuda { gpu_id } => {
                 format!(", cuda:{}", gpu_id)
             }
-            crate::DeviceLocation::Metal { gpu_id } => {
-                format!(", metal:{}", gpu_id)
-            }
         };
 
         write!(

candle-core/src/dtype.rs

@@ -1,7 +1,7 @@
 //! Types for elements that can be stored and manipulated using tensors.
 #![allow(clippy::redundant_closure_call)]
 use crate::backend::BackendStorage;
-use crate::{CpuStorage, CpuStorageRef, Error, Result};
+use crate::{CpuStorage, Error, Result};
 
 /// The different types of elements allowed in tensors.
 #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
@@ -23,15 +23,7 @@ pub enum DType {
 }
 
 #[derive(Debug, PartialEq, Eq)]
-pub struct DTypeParseError(String);
-
-impl std::fmt::Display for DTypeParseError {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "cannot parse '{}' as a dtype", self.0)
-    }
-}
-
-impl std::error::Error for DTypeParseError {}
+pub struct DTypeParseError;
 
 impl std::str::FromStr for DType {
     type Err = DTypeParseError;
@@ -44,7 +36,7 @@ impl std::str::FromStr for DType {
             "f16" => Ok(Self::F16),
             "f32" => Ok(Self::F32),
             "f64" => Ok(Self::F64),
-            _ => Err(DTypeParseError(s.to_string())),
+            _ => Err(DTypeParseError),
         }
     }
 }
@@ -100,14 +92,12 @@ pub trait WithDType:
     + 'static
     + Send
     + Sync
-    + std::any::Any
     + crate::cpu::kernels::VecOps
 {
     const DTYPE: DType;
 
     fn from_f64(v: f64) -> Self;
     fn to_f64(self) -> f64;
-    fn cpu_storage_ref(data: &[Self]) -> CpuStorageRef<'_>;
     fn to_cpu_storage_owned(data: Vec<Self>) -> CpuStorage;
 
     fn to_cpu_storage(data: &[Self]) -> CpuStorage {
@@ -131,10 +121,6 @@ macro_rules! with_dtype {
                 $to_f64(self)
             }
 
-            fn cpu_storage_ref(data: &[Self]) -> CpuStorageRef<'_> {
-                CpuStorageRef::$dtype(data)
-            }
-
             fn to_cpu_storage_owned(data: Vec<Self>) -> CpuStorage {
                 CpuStorage::$dtype(data)
             }

candle-core/src/dummy_cuda_backend.rs

@@ -1,5 +1,3 @@
-//! Implementation of the Cuda backend when Cuda support has not been compiled in.
-//!
 #![allow(dead_code)]
 use crate::op::{BinaryOpT, CmpOp, ReduceOp, UnaryOpT};
 use crate::{CpuStorage, DType, Error, Layout, Result, Shape};
@@ -16,12 +14,6 @@ macro_rules! fail {
     };
 }
 
-impl CudaDevice {
-    pub fn new_with_stream(_: usize) -> Result<Self> {
-        Err(Error::NotCompiledWithCudaSupport)
-    }
-}
-
 impl crate::backend::BackendStorage for CudaStorage {
     type Device = CudaDevice;
 
@@ -87,16 +79,6 @@ impl crate::backend::BackendStorage for CudaStorage {
         Err(Error::NotCompiledWithCudaSupport)
     }
 
-    fn conv_transpose1d(
-        &self,
-        _: &Layout,
-        _: &Self,
-        _: &Layout,
-        _: &crate::conv::ParamsConvTranspose1D,
-    ) -> Result<Self> {
-        Err(Error::NotCompiledWithCudaSupport)
-    }
-
     fn conv2d(
         &self,
         _: &Layout,
@@ -162,19 +144,6 @@ impl crate::backend::BackendStorage for CudaStorage {
         Err(Error::NotCompiledWithCudaSupport)
     }
 
-    fn copy2d(
-        &self,
-        _: &mut Self,
-        _: usize,
-        _: usize,
-        _: usize,
-        _: usize,
-        _: usize,
-        _: usize,
-    ) -> Result<()> {
-        Err(Error::NotCompiledWithCudaSupport)
-    }
-
     fn avg_pool2d(&self, _: &Layout, _: (usize, usize), _: (usize, usize)) -> Result<Self> {
         Err(Error::NotCompiledWithCudaSupport)
     }
@@ -218,22 +187,10 @@ impl crate::backend::BackendDevice for CudaDevice {
         Err(Error::NotCompiledWithCudaSupport)
     }
 
-    unsafe fn alloc_uninit(&self, _shape: &Shape, _dtype: DType) -> Result<Self::Storage> {
-        Err(Error::NotCompiledWithCudaSupport)
-    }
-
-    fn storage_from_slice<T: crate::WithDType>(&self, _: &[T]) -> Result<Self::Storage> {
-        Err(Error::NotCompiledWithCudaSupport)
-    }
-
     fn storage_from_cpu_storage(&self, _: &CpuStorage) -> Result<Self::Storage> {
         Err(Error::NotCompiledWithCudaSupport)
     }
 
-    fn storage_from_cpu_storage_owned(&self, _: CpuStorage) -> Result<Self::Storage> {
-        Err(Error::NotCompiledWithCudaSupport)
-    }
-
     fn rand_uniform(&self, _: &Shape, _: DType, _: f64, _: f64) -> Result<Self::Storage> {
         Err(Error::NotCompiledWithCudaSupport)
     }
@@ -241,38 +198,4 @@ impl crate::backend::BackendDevice for CudaDevice {
     fn rand_normal(&self, _: &Shape, _: DType, _: f64, _: f64) -> Result<Self::Storage> {
         Err(Error::NotCompiledWithCudaSupport)
     }
-
-    fn synchronize(&self) -> Result<()> {
-        Ok(())
-    }
 }
-
-/// This bool controls whether reduced precision reductions (e.g., with fp16 accumulation type) are
-/// allowed with f16 GEMMs.
-pub fn gemm_reduced_precision_f16() -> bool {
-    true
-}
-
-/// This bool controls whether reduced precision reductions (e.g., with fp16 accumulation type) are
-/// allowed with f16 GEMMs.
-pub fn set_gemm_reduced_precision_f16(_: bool) {}
-
-/// This bool controls whether reduced precision reductions (e.g., with fp16 accumulation type) are
-/// allowed with bf16 GEMMs.
-pub fn gemm_reduced_precision_bf16() -> bool {
-    true
-}
-
-/// This bool controls whether reduced precision reductions (e.g., with fp16 accumulation type) are
-/// allowed with bf16 GEMMs.
-pub fn set_gemm_reduced_precision_bf16(_: bool) {}
-
-/// This bool controls whether reduced precision reductions (e.g., with tf32 accumulation type) are
-/// allowed with f32 GEMMs.
-pub fn gemm_reduced_precision_f32() -> bool {
-    true
-}
-
-/// This bool controls whether reduced precision reductions (e.g., with tf32 accumulation type) are
-/// allowed with f32 GEMMs.
-pub fn set_gemm_reduced_precision_f32(_b: bool) {}

candle-core/src/dummy_metal_backend.rs

@@ -1,252 +0,0 @@
-#![allow(dead_code)]
-use crate::op::{BinaryOpT, CmpOp, ReduceOp, UnaryOpT};
-use crate::{CpuStorage, DType, Error, Layout, Result, Shape};
-
-#[derive(Debug, Clone)]
-pub struct MetalDevice;
-
-#[derive(Debug)]
-pub struct MetalStorage;
-
-#[derive(thiserror::Error, Debug)]
-pub enum MetalError {
-    #[error("{0}")]
-    Message(String),
-}
-
-impl From<String> for MetalError {
-    fn from(e: String) -> Self {
-        MetalError::Message(e)
-    }
-}
-
-macro_rules! fail {
-    () => {
-        unimplemented!("metal support has not been enabled, add `metal` feature to enable.")
-    };
-}
-
-impl crate::backend::BackendStorage for MetalStorage {
-    type Device = MetalDevice;
-
-    fn try_clone(&self, _: &Layout) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn dtype(&self) -> DType {
-        fail!()
-    }
-
-    fn device(&self) -> &Self::Device {
-        fail!()
-    }
-
-    fn to_cpu_storage(&self) -> Result<CpuStorage> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn affine(&self, _: &Layout, _: f64, _: f64) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn powf(&self, _: &Layout, _: f64) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn elu(&self, _: &Layout, _: f64) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn reduce_op(&self, _: ReduceOp, _: &Layout, _: &[usize]) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn cmp(&self, _: CmpOp, _: &Self, _: &Layout, _: &Layout) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn to_dtype(&self, _: &Layout, _: DType) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn unary_impl<B: UnaryOpT>(&self, _: &Layout) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn binary_impl<B: BinaryOpT>(&self, _: &Self, _: &Layout, _: &Layout) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn where_cond(&self, _: &Layout, _: &Self, _: &Layout, _: &Self, _: &Layout) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn conv1d(
-        &self,
-        _: &Layout,
-        _: &Self,
-        _: &Layout,
-        _: &crate::conv::ParamsConv1D,
-    ) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn conv_transpose1d(
-        &self,
-        _l: &Layout,
-        _kernel: &Self,
-        _kernel_l: &Layout,
-        _params: &crate::conv::ParamsConvTranspose1D,
-    ) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn conv2d(
-        &self,
-        _: &Layout,
-        _: &Self,
-        _: &Layout,
-        _: &crate::conv::ParamsConv2D,
-    ) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn conv_transpose2d(
-        &self,
-        _l: &Layout,
-        _kernel: &Self,
-        _kernel_l: &Layout,
-        _params: &crate::conv::ParamsConvTranspose2D,
-    ) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn index_select(&self, _: &Self, _: &Layout, _: &Layout, _: usize) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-    fn gather(&self, _: &Layout, _: &Self, _: &Layout, _: usize) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn scatter_add(
-        &self,
-        _: &Layout,
-        _: &Self,
-        _: &Layout,
-        _: &Self,
-        _: &Layout,
-        _: usize,
-    ) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn index_add(
-        &self,
-        _: &Layout,
-        _: &Self,
-        _: &Layout,
-        _: &Self,
-        _: &Layout,
-        _: usize,
-    ) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn matmul(
-        &self,
-        _: &Self,
-        _: (usize, usize, usize, usize),
-        _: &Layout,
-        _: &Layout,
-    ) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn copy_strided_src(&self, _: &mut Self, _: usize, _: &Layout) -> Result<()> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn copy2d(
-        &self,
-        _: &mut Self,
-        _: usize,
-        _: usize,
-        _: usize,
-        _: usize,
-        _: usize,
-        _: usize,
-    ) -> Result<()> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn avg_pool2d(&self, _: &Layout, _: (usize, usize), _: (usize, usize)) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn max_pool2d(&self, _: &Layout, _: (usize, usize), _: (usize, usize)) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn upsample_nearest1d(&self, _: &Layout, _: usize) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn upsample_nearest2d(&self, _: &Layout, _: usize, _: usize) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-}
-
-impl crate::backend::BackendDevice for MetalDevice {
-    type Storage = MetalStorage;
-    fn new(_: usize) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn set_seed(&self, _: u64) -> Result<()> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn location(&self) -> crate::DeviceLocation {
-        fail!()
-    }
-
-    fn same_device(&self, _: &Self) -> bool {
-        fail!()
-    }
-
-    fn zeros_impl(&self, _shape: &Shape, _dtype: DType) -> Result<Self::Storage> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn ones_impl(&self, _shape: &Shape, _dtype: DType) -> Result<Self::Storage> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    unsafe fn alloc_uninit(&self, _shape: &Shape, _dtype: DType) -> Result<Self::Storage> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn storage_from_slice<T: crate::WithDType>(&self, _: &[T]) -> Result<Self::Storage> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn storage_from_cpu_storage(&self, _: &CpuStorage) -> Result<Self::Storage> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn storage_from_cpu_storage_owned(&self, _: CpuStorage) -> Result<Self::Storage> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn rand_uniform(&self, _: &Shape, _: DType, _: f64, _: f64) -> Result<Self::Storage> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn rand_normal(&self, _: &Shape, _: DType, _: f64, _: f64) -> Result<Self::Storage> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    fn synchronize(&self) -> Result<()> {
-        Ok(())
-    }
-}

candle-core/src/error.rs

@@ -1,5 +1,4 @@
-//! Candle-specific Error and Result
-use crate::{DType, DeviceLocation, Layout, MetalError, Shape};
+use crate::{DType, DeviceLocation, Layout, Shape};
 
 #[derive(Debug, Clone)]
 pub struct MatMulUnexpectedStriding {
@@ -9,14 +8,8 @@ pub struct MatMulUnexpectedStriding {
     pub msg: &'static str,
 }
 
-impl std::fmt::Debug for Error {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{self}")
-    }
-}
-
 /// Main library error type.
-#[derive(thiserror::Error)]
+#[derive(thiserror::Error, Debug)]
 pub enum Error {
     // === DType Errors ===
     #[error("{msg}, expected: {expected:?}, got: {got:?}")]
@@ -159,9 +152,6 @@ pub enum Error {
     #[error("the candle crate has not been built with cuda support")]
     NotCompiledWithCudaSupport,
 
-    #[error("the candle crate has not been built with metal support")]
-    NotCompiledWithMetalSupport,
-
     #[error("cannot find tensor {path}")]
     CannotFindTensor { path: String },
 
@@ -169,12 +159,6 @@ pub enum Error {
     #[error(transparent)]
     Cuda(Box<dyn std::error::Error + Send + Sync>),
 
-    #[error("Metal error {0}")]
-    Metal(#[from] MetalError),
-
-    #[error(transparent)]
-    Ug(#[from] ug::Error),
-
     #[error(transparent)]
     TryFromIntError(#[from] core::num::TryFromIntError),
 
@@ -189,10 +173,6 @@ pub enum Error {
     #[error(transparent)]
     ParseInt(#[from] std::num::ParseIntError),
 
-    /// Utf8 parse error.
-    #[error(transparent)]
-    FromUtf8(#[from] std::string::FromUtf8Error),
-
     /// I/O error.
     #[error(transparent)]
     Io(#[from] std::io::Error),
@@ -205,14 +185,8 @@ pub enum Error {
     UnsupportedSafeTensorDtype(safetensors::Dtype),
 
     /// Arbitrary errors wrapping.
-    #[error("{0}")]
-    Wrapped(Box<dyn std::fmt::Display + Send + Sync>),
-
-    #[error("{context}\n{inner}")]
-    Context {
-        inner: Box<Self>,
-        context: Box<dyn std::fmt::Display + Send + Sync>,
-    },
+    #[error(transparent)]
+    Wrapped(Box<dyn std::error::Error + Send + Sync>),
 
     /// Adding path information to an error.
     #[error("path: {path:?} {inner}")]
@@ -230,26 +204,19 @@ pub enum Error {
     /// User generated error message, typically created via `bail!`.
     #[error("{0}")]
     Msg(String),
-
-    #[error("unwrap none")]
-    UnwrapNone,
 }
 
 pub type Result<T> = std::result::Result<T, Error>;
 
 impl Error {
-    pub fn wrap(err: impl std::fmt::Display + Send + Sync + 'static) -> Self {
+    pub fn wrap(err: impl std::error::Error + Send + Sync + 'static) -> Self {
         Self::Wrapped(Box::new(err)).bt()
     }
 
-    pub fn msg(err: impl std::fmt::Display) -> Self {
+    pub fn msg(err: impl std::error::Error + Send + Sync + 'static) -> Self {
         Self::Msg(err.to_string()).bt()
     }
 
-    pub fn debug(err: impl std::fmt::Debug) -> Self {
-        Self::Msg(format!("{err:?}")).bt()
-    }
-
     pub fn bt(self) -> Self {
         let backtrace = std::backtrace::Backtrace::capture();
         match backtrace.status() {
@@ -268,13 +235,6 @@ impl Error {
             path: p.as_ref().to_path_buf(),
         }
     }
-
-    pub fn context(self, c: impl std::fmt::Display + Send + Sync + 'static) -> Self {
-        Self::Context {
-            inner: Box::new(self),
-            context: Box::new(c),
-        }
-    }
 }
 
 #[macro_export]
@@ -297,41 +257,3 @@ pub fn zip<T, U>(r1: Result<T>, r2: Result<U>) -> Result<(T, U)> {
         (_, Err(e)) => Err(e),
     }
 }
-
-// Taken from anyhow.
-pub trait Context<T> {
-    /// Wrap the error value with additional context.
-    fn context<C>(self, context: C) -> Result<T>
-    where
-        C: std::fmt::Display + Send + Sync + 'static;
-
-    /// Wrap the error value with additional context that is evaluated lazily
-    /// only once an error does occur.
-    fn with_context<C, F>(self, f: F) -> Result<T>
-    where
-        C: std::fmt::Display + Send + Sync + 'static,
-        F: FnOnce() -> C;
-}
-
-impl<T> Context<T> for Option<T> {
-    fn context<C>(self, context: C) -> Result<T>
-    where
-        C: std::fmt::Display + Send + Sync + 'static,
-    {
-        match self {
-            Some(v) => Ok(v),
-            None => Err(Error::UnwrapNone.context(context).bt()),
-        }
-    }
-
-    fn with_context<C, F>(self, f: F) -> Result<T>
-    where
-        C: std::fmt::Display + Send + Sync + 'static,
-        F: FnOnce() -> C,
-    {
-        match self {
-            Some(v) => Ok(v),
-            None => Err(Error::UnwrapNone.context(f()).bt()),
-        }
-    }
-}

candle-core/src/indexer.rs

@@ -64,7 +64,7 @@ impl Tensor {
 #[derive(Debug)]
 /// Generic structure used to index a slice of the tensor
 pub enum TensorIndexer {
-    /// This selects the elements for which an index has some specific value.
+    /// This selects the elemnts for which an index has some specific value.
     Select(usize),
     /// This is a regular slice, purely indexing a chunk of the tensor
     Narrow(Bound<usize>, Bound<usize>),
@@ -104,31 +104,37 @@ impl From<&Tensor> for TensorIndexer {
     }
 }
 
-trait RB: RangeBounds<usize> {}
-impl RB for Range<usize> {}
-impl RB for RangeFrom<usize> {}
-impl RB for RangeFull {}
-impl RB for RangeInclusive<usize> {}
-impl RB for RangeTo<usize> {}
-impl RB for RangeToInclusive<usize> {}
+macro_rules! impl_from_range {
+    ($range_type:ty) => {
+        impl From<$range_type> for TensorIndexer {
+            fn from(range: $range_type) -> Self {
+                use std::ops::Bound::*;
 
-impl<T: RB> From<T> for TensorIndexer {
-    fn from(range: T) -> Self {
-        use std::ops::Bound::*;
-        let start = match range.start_bound() {
-            Included(idx) => Included(*idx),
-            Excluded(idx) => Excluded(*idx),
-            Unbounded => Unbounded,
-        };
-        let end = match range.end_bound() {
-            Included(idx) => Included(*idx),
-            Excluded(idx) => Excluded(*idx),
-            Unbounded => Unbounded,
-        };
-        TensorIndexer::Narrow(start, end)
-    }
+                let start = match range.start_bound() {
+                    Included(idx) => Included(*idx),
+                    Excluded(idx) => Excluded(*idx),
+                    Unbounded => Unbounded,
+                };
+
+                let end = match range.end_bound() {
+                    Included(idx) => Included(*idx),
+                    Excluded(idx) => Excluded(*idx),
+                    Unbounded => Unbounded,
+                };
+
+                TensorIndexer::Narrow(start, end)
+            }
+        }
+    };
 }
 
+impl_from_range!(Range<usize>);
+impl_from_range!(RangeFrom<usize>);
+impl_from_range!(RangeFull);
+impl_from_range!(RangeInclusive<usize>);
+impl_from_range!(RangeTo<usize>);
+impl_from_range!(RangeToInclusive<usize>);
+
 /// Trait used to implement multiple signatures for ease of use of the slicing
 /// of a tensor
 pub trait IndexOp<T> {
@@ -141,117 +147,28 @@ impl<T> IndexOp<T> for Tensor
 where
     T: Into<TensorIndexer>,
 {
-    ///```rust
-    /// use candle_core::{Tensor, DType, Device, IndexOp};
-    /// let a = Tensor::new(&[
-    ///     [0., 1.],
-    ///     [2., 3.],
-    ///     [4., 5.]
-    /// ], &Device::Cpu)?;
-    ///
-    /// let b = a.i(0)?;
-    /// assert_eq!(b.shape().dims(), &[2]);
-    /// assert_eq!(b.to_vec1::<f64>()?, &[0., 1.]);
-    ///
-    /// let c = a.i(..2)?;
-    /// assert_eq!(c.shape().dims(), &[2, 2]);
-    /// assert_eq!(c.to_vec2::<f64>()?, &[
-    ///     [0., 1.],
-    ///     [2., 3.]
-    /// ]);
-    ///
-    /// let d = a.i(1..)?;
-    /// assert_eq!(d.shape().dims(), &[2, 2]);
-    /// assert_eq!(d.to_vec2::<f64>()?, &[
-    ///     [2., 3.],
-    ///     [4., 5.]
-    /// ]);
-    /// # Ok::<(), candle_core::Error>(())
-    /// ```
     fn i(&self, index: T) -> Result<Tensor, Error> {
         self.index(&[index.into()])
     }
 }
 
-impl<A> IndexOp<(A,)> for Tensor
-where
-    A: Into<TensorIndexer>,
-{
-    ///```rust
-    /// use candle_core::{Tensor, DType, Device, IndexOp};
-    /// let a = Tensor::new(&[
-    ///     [0f32, 1.],
-    ///     [2.  , 3.],
-    ///     [4.  , 5.]
-    /// ], &Device::Cpu)?;
-    ///
-    /// let b = a.i((0,))?;
-    /// assert_eq!(b.shape().dims(), &[2]);
-    /// assert_eq!(b.to_vec1::<f32>()?, &[0., 1.]);
-    ///
-    /// let c = a.i((..2,))?;
-    /// assert_eq!(c.shape().dims(), &[2, 2]);
-    /// assert_eq!(c.to_vec2::<f32>()?, &[
-    ///     [0., 1.],
-    ///     [2., 3.]
-    /// ]);
-    ///
-    /// let d = a.i((1..,))?;
-    /// assert_eq!(d.shape().dims(), &[2, 2]);
-    /// assert_eq!(d.to_vec2::<f32>()?, &[
-    ///     [2., 3.],
-    ///     [4., 5.]
-    /// ]);
-    /// # Ok::<(), candle_core::Error>(())
-    /// ```
-    fn i(&self, (a,): (A,)) -> Result<Tensor, Error> {
-        self.index(&[a.into()])
-    }
-}
-#[allow(non_snake_case)]
-impl<A, B> IndexOp<(A, B)> for Tensor
-where
-    A: Into<TensorIndexer>,
-    B: Into<TensorIndexer>,
-{
-    ///```rust
-    /// use candle_core::{Tensor, DType, Device, IndexOp};
-    /// let a = Tensor::new(&[[0f32, 1., 2.], [3., 4., 5.], [6., 7., 8.]], &Device::Cpu)?;
-    ///
-    /// let b = a.i((1, 0))?;
-    /// assert_eq!(b.to_vec0::<f32>()?, 3.);
-    ///
-    /// let c = a.i((..2, 1))?;
-    /// assert_eq!(c.shape().dims(), &[2]);
-    /// assert_eq!(c.to_vec1::<f32>()?, &[1., 4.]);
-    ///
-    /// let d = a.i((2.., ..))?;
-    /// assert_eq!(c.shape().dims(), &[2]);
-    /// assert_eq!(c.to_vec1::<f32>()?, &[1., 4.]);
-    /// # Ok::<(), candle_core::Error>(())
-    /// ```
-    fn i(&self, (a, b): (A, B)) -> Result<Tensor, Error> {
-        self.index(&[a.into(), b.into()])
-    }
-}
-
 macro_rules! index_op_tuple {
-    ($doc:tt, $($t:ident),+) => {
+    ($($t:ident),+) => {
         #[allow(non_snake_case)]
         impl<$($t),*> IndexOp<($($t,)*)> for Tensor
         where
             $($t: Into<TensorIndexer>,)*
         {
-            #[doc=$doc]
             fn i(&self, ($($t,)*): ($($t,)*)) -> Result<Tensor, Error> {
                 self.index(&[$($t.into(),)*])
             }
         }
     };
 }
-
-index_op_tuple!("see [TensorIndex#method.i]", A, B, C);
-index_op_tuple!("see [TensorIndex#method.i]", A, B, C, D);
-index_op_tuple!("see [TensorIndex#method.i]", A, B, C, D, E);
-index_op_tuple!("see [TensorIndex#method.i]", A, B, C, D, E, F);
-index_op_tuple!("see [TensorIndex#method.i]", A, B, C, D, E, F, G);
+index_op_tuple!(A);
+index_op_tuple!(A, B);
+index_op_tuple!(A, B, C);
+index_op_tuple!(A, B, C, D);
+index_op_tuple!(A, B, C, D, E);
+index_op_tuple!(A, B, C, D, E, F);
+index_op_tuple!(A, B, C, D, E, F, G);

candle-core/src/layout.rs

@@ -1,4 +1,3 @@
-//! Tensor Layouts including contiguous or sparse strides
 use crate::{Error, Result, Shape};
 
 #[derive(Debug, PartialEq, Eq, Clone)]
@@ -36,12 +35,6 @@ impl Layout {
         self.shape.dims()
     }
 
-    /// The dimension size for a specified dimension index.
-    pub fn dim<D: crate::shape::Dim>(&self, dim: D) -> Result<usize> {
-        let dim = dim.to_index(&self.shape, "dim")?;
-        Ok(self.dims()[dim])
-    }
-
     pub fn shape(&self) -> &Shape {
         &self.shape
     }
@@ -77,7 +70,7 @@ impl Layout {
         self.shape.is_fortran_contiguous(&self.stride)
     }
 
-    pub fn narrow(&self, dim: usize, start: usize, len: usize) -> Result<Self> {
+    pub(crate) fn narrow(&self, dim: usize, start: usize, len: usize) -> Result<Self> {
         let dims = self.shape().dims();
         if dim >= dims.len() {
             Err(Error::DimOutOfRange {
@@ -106,7 +99,7 @@ impl Layout {
         })
     }
 
-    pub fn transpose(&self, dim1: usize, dim2: usize) -> Result<Self> {
+    pub(crate) fn transpose(&self, dim1: usize, dim2: usize) -> Result<Self> {
         let rank = self.shape.rank();
         if rank <= dim1 || rank <= dim2 {
             Err(Error::UnexpectedNumberOfDims {
@@ -127,7 +120,7 @@ impl Layout {
         })
     }
 
-    pub fn permute(&self, idxs: &[usize]) -> Result<Self> {
+    pub(crate) fn permute(&self, idxs: &[usize]) -> Result<Self> {
         let is_permutation =
             idxs.len() == self.shape.rank() && (0..idxs.len()).all(|i| idxs.contains(&i));
         if !is_permutation {

candle-core/src/lib.rs

@@ -7,14 +7,14 @@
 //!
 //! let a = Tensor::arange(0f32, 6f32, &Device::Cpu)?.reshape((2, 3))?;
 //! let b = Tensor::arange(0f32, 12f32, &Device::Cpu)?.reshape((3, 4))?;
-//! let c = a.matmul(&b)?;
 //!
+//! let c = a.matmul(&b)?;
 //! # Ok(())}
 //! ```
 //!
 //! ## Features
 //!
-//! - Simple syntax (looks and feels like PyTorch)
+//! - Simple syntax (looks and like PyTorch)
 //! - CPU and Cuda backends (and M1 support)
 //! - Enable serverless (CPU) small and fast deployments
 //! - Model training
@@ -32,91 +32,60 @@
 //! Python can really add overhead in more complex workflows and the [GIL](https://www.backblaze.com/blog/the-python-gil-past-present-and-future/) is a notorious source of headaches.
 //!
 //! Rust is cool, and a lot of the HF ecosystem already has Rust crates [safetensors](https://github.com/huggingface/safetensors) and [tokenizers](https://github.com/huggingface/tokenizers)
-//!
-//! ## Other Crates
-//!
-//! Candle consists of a number of crates. This crate holds core the common data structures but you may wish
-//! to look at the docs for the other crates which can be found here:
-//!
-//! - [candle-core](https://docs.rs/candle-core/). Core Datastructures and DataTypes.
-//! - [candle-nn](https://docs.rs/candle-nn/). Building blocks for Neural Nets.
-//! - [candle-datasets](https://docs.rs/candle-datasets/). Rust access to commonly used Datasets like MNIST.
-//! - [candle-examples](https://docs.rs/candle-examples/). Examples of Candle in Use.
-//! - [candle-onnx](https://docs.rs/candle-onnx/). Loading and using ONNX models.
-//! - [candle-pyo3](https://docs.rs/candle-pyo3/). Access to Candle from Python.
-//! - [candle-transformers](https://docs.rs/candle-transformers/). Candle implemntation of many published transformer models.
-//!
 
 #[cfg(feature = "accelerate")]
 mod accelerate;
 pub mod backend;
 pub mod backprop;
-pub mod conv;
+mod conv;
 mod convert;
 pub mod cpu;
 pub mod cpu_backend;
 #[cfg(feature = "cuda")]
 pub mod cuda_backend;
-mod custom_op;
+#[cfg(feature = "cudnn")]
+pub mod cudnn;
 mod device;
 pub mod display;
 mod dtype;
-pub mod dummy_cuda_backend;
-mod dummy_metal_backend;
+mod dummy_cuda_backend;
 pub mod error;
 mod indexer;
 pub mod layout;
-#[cfg(feature = "metal")]
-pub mod metal_backend;
 #[cfg(feature = "mkl")]
 mod mkl;
 pub mod npy;
-pub mod op;
+mod op;
 pub mod pickle;
 pub mod quantized;
 pub mod safetensors;
 pub mod scalar;
 pub mod shape;
-mod sort;
 mod storage;
-pub mod streaming;
 mod strided_index;
 mod tensor;
-mod tensor_cat;
 pub mod test_utils;
 pub mod utils;
 mod variable;
 
-#[cfg(feature = "cudnn")]
-pub use cuda_backend::cudnn;
-
-pub use cpu_backend::{CpuStorage, CpuStorageRef};
-pub use custom_op::{CustomOp1, CustomOp2, CustomOp3, InplaceOp1, InplaceOp2, InplaceOp3, UgIOp1};
-pub use device::{Device, DeviceLocation, NdArray};
-pub use dtype::{DType, DTypeParseError, FloatDType, IntDType, WithDType};
-pub use error::{Context, Error, Result};
-pub use indexer::{IndexOp, TensorIndexer};
+pub use cpu_backend::CpuStorage;
+pub use device::{Device, DeviceLocation};
+pub use dtype::{DType, FloatDType, IntDType, WithDType};
+pub use error::{Error, Result};
+pub use indexer::IndexOp;
 pub use layout::Layout;
+pub use op::{CustomOp1, CustomOp2, CustomOp3};
 pub use shape::{Shape, D};
 pub use storage::Storage;
-pub use streaming::{StreamTensor, StreamingBinOp, StreamingModule};
 pub use strided_index::{StridedBlocks, StridedIndex};
 pub use tensor::{Tensor, TensorId};
 pub use variable::Var;
 
 #[cfg(feature = "cuda")]
-pub use cuda_backend as cuda;
+pub use cuda_backend::{CudaDevice, CudaStorage};
 
 #[cfg(not(feature = "cuda"))]
-pub use dummy_cuda_backend as cuda;
-
-pub use cuda::{CudaDevice, CudaStorage};
-
-#[cfg(feature = "metal")]
-pub use metal_backend::{MetalDevice, MetalError, MetalStorage};
-
-#[cfg(not(feature = "metal"))]
-pub use dummy_metal_backend::{MetalDevice, MetalError, MetalStorage};
+pub use dummy_cuda_backend::{CudaDevice, CudaStorage};
 
 #[cfg(feature = "mkl")]
 extern crate intel_mkl_src;
@@ -140,34 +109,19 @@ impl ToUsize2 for (usize, usize) {
     }
 }
 
-/// Defining a module with forward method using a single argument.
+// A simple trait defining a module with forward method using a single argument.
 pub trait Module {
     fn forward(&self, xs: &Tensor) -> Result<Tensor>;
 }
 
+impl Module for quantized::QMatMul {
+    fn forward(&self, xs: &Tensor) -> Result<Tensor> {
+        self.forward(xs)
+    }
+}
+
 impl<T: Fn(&Tensor) -> Result<Tensor>> Module for T {
     fn forward(&self, xs: &Tensor) -> Result<Tensor> {
         self(xs)
     }
 }
-
-impl<M: Module> Module for Option<&M> {
-    fn forward(&self, xs: &Tensor) -> Result<Tensor> {
-        match self {
-            None => Ok(xs.clone()),
-            Some(m) => m.forward(xs),
-        }
-    }
-}
-
-/// A single forward method using a single single tensor argument and a flag to
-/// separate the training and evaluation behaviors.
-pub trait ModuleT {
-    fn forward_t(&self, xs: &Tensor, train: bool) -> Result<Tensor>;
-}
-
-impl<M: Module> ModuleT for M {
-    fn forward_t(&self, xs: &Tensor, _train: bool) -> Result<Tensor> {
-        self.forward(xs)
-    }
-}

candle-core/src/metal_backend/device.rs

@@ -1,340 +0,0 @@
-use crate::{DType, Result};
-use candle_metal_kernels::Kernels;
-use metal::{Buffer, CommandBuffer, CommandQueue, MTLResourceOptions, NSUInteger};
-use std::collections::HashMap;
-use std::ffi::c_void;
-use std::path::Path;
-use std::sync::{Arc, Mutex, RwLock};
-
-use super::MetalError;
-
-/// Unique identifier for cuda devices.
-#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
-pub struct DeviceId(usize);
-
-impl DeviceId {
-    pub(crate) fn new() -> Self {
-        // https://users.rust-lang.org/t/idiomatic-rust-way-to-generate-unique-id/33805
-        use std::sync::atomic;
-        static COUNTER: atomic::AtomicUsize = atomic::AtomicUsize::new(1);
-        Self(COUNTER.fetch_add(1, atomic::Ordering::Relaxed))
-    }
-}
-
-type BufferMap = HashMap<(NSUInteger, MTLResourceOptions), Vec<Arc<Buffer>>>;
-pub(crate) struct Commands {
-    /// Single command queue for the entire device.
-    command_queue: CommandQueue,
-    /// One command buffer at a time.
-    /// The scheduler works by allowing multiple
-    /// [ComputeCommandEncoder](https://developer.apple.com/documentation/metal/mtlcomputecommandencoder?language=objc)
-    /// on a single command buffer. Using a single command buffer would be fastest on the GPU but
-    /// prevents overlapping of CPU and GPU commands (because command buffer needs to be committed
-    /// to start to work).
-    /// Despite what the documentation says, command buffers are NOT ordered. They are ordered
-    /// for their START time, but there's no guarantee that command buffer1 will finish before
-    /// command buffer2 starts (or there are metal bugs there)
-    command_buffer: CommandBuffer,
-    /// Keeps track of the current amount of compute command encoders on the current
-    /// command buffer
-    /// Arc, RwLock because of the interior mutability.
-    command_buffer_index: usize,
-    /// The maximum amount of [compute command encoder](https://developer.apple.com/documentation/metal/mtlcomputecommandencoder?language=objc) per [command buffer](https://developer.apple.com/documentation/metal/mtlcommandbuffer?language=objc)
-    compute_per_buffer: usize,
-}
-
-impl Commands {
-    pub(crate) fn new(command_queue: CommandQueue) -> Result<Self> {
-        let command_buffer = command_queue.new_command_buffer().to_owned();
-        command_buffer.enqueue();
-        let compute_per_buffer = match std::env::var("CANDLE_METAL_COMPUTE_PER_BUFFER") {
-            Ok(val) => val.parse()?,
-            _ => 50,
-        };
-        Ok(Self {
-            command_queue,
-            command_buffer,
-            command_buffer_index: 0,
-            compute_per_buffer,
-        })
-    }
-
-    pub fn command_buffer(&mut self) -> Result<(bool, CommandBuffer)> {
-        let mut command_buffer = self.command_buffer.to_owned();
-        let mut flushed = false;
-        if self.command_buffer_index > self.compute_per_buffer {
-            self.command_buffer.commit();
-            command_buffer = self.command_queue.new_command_buffer().to_owned();
-            self.command_buffer = command_buffer.clone();
-            self.command_buffer_index = 0;
-            flushed = true;
-        }
-        self.command_buffer_index += 1;
-        Ok((flushed, command_buffer))
-    }
-
-    pub fn wait_until_completed(&mut self) -> Result<()> {
-        match self.command_buffer.status() {
-            metal::MTLCommandBufferStatus::Committed
-            | metal::MTLCommandBufferStatus::Scheduled
-            | metal::MTLCommandBufferStatus::Completed => {
-                panic!("Already committed");
-            }
-            _ => {}
-        }
-        self.command_buffer.commit();
-        self.command_buffer.wait_until_completed();
-        self.command_buffer = self.command_queue.new_command_buffer().to_owned();
-
-        Ok(())
-    }
-}
-
-#[derive(Clone)]
-pub struct MetalDevice {
-    /// Unique identifier, the registryID is not sufficient as it identifies the GPU rather than
-    /// the device itself.
-    pub(crate) id: DeviceId,
-
-    /// Raw metal device: <https://developer.apple.com/documentation/metal/mtldevice?language=objc>
-    pub(crate) device: metal::Device,
-
-    pub(crate) commands: Arc<RwLock<Commands>>,
-
-    /// Simple allocator struct.
-    /// The buffers are stored in size buckets since ML tends to use similar shapes over and over.
-    /// We store the buffers in [`Arc`] because it's much faster than Obj-c internal ref counting
-    /// (could be linked to FFI communication overhead).
-    ///
-    /// Whenever a buffer has a strong_count==1, we can reuse it, it means it was dropped in the
-    /// graph calculation, and only we the allocator kept a reference to it, therefore it's free
-    /// to be reused. However, in order for this to work, we need to guarantee the order of
-    /// operation, so that this buffer is not being used by another kernel at the same time.
-    /// Arc is the CPU reference count, it doesn't mean anything on the GPU side of things.
-    ///
-    /// Whenever we actually allocate a new buffer, we make a full sweep to clean up unused buffers
-    /// (strong_count = 1).
-    pub(crate) buffers: Arc<RwLock<BufferMap>>,
-
-    /// Simple keeper struct to keep track of the already compiled kernels so we can reuse them.
-    /// Heavily used by [`candle_metal_kernels`]
-    pub(crate) kernels: Arc<Kernels>,
-    /// Seed for random number generation.
-    pub(crate) seed: Arc<Mutex<Buffer>>,
-}
-
-impl std::fmt::Debug for MetalDevice {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "MetalDevice({:?})", self.id)
-    }
-}
-
-impl std::ops::Deref for MetalDevice {
-    type Target = metal::DeviceRef;
-
-    fn deref(&self) -> &Self::Target {
-        &self.device
-    }
-}
-
-impl MetalDevice {
-    pub fn compile(
-        &self,
-        func_name: &'static str,
-        kernel: ug::lang::ssa::Kernel,
-    ) -> Result<metal::ComputePipelineState> {
-        let mut buf = vec![];
-        ug_metal::code_gen::gen(&mut buf, func_name, &kernel)?;
-        let metal_code = String::from_utf8(buf)?;
-        let lib = self
-            .device
-            .new_library_with_source(&metal_code, &metal::CompileOptions::new())
-            .map_err(MetalError::from)?;
-        let func = lib
-            .get_function(func_name, None)
-            .map_err(MetalError::from)?;
-        let pl = self
-            .device
-            .new_compute_pipeline_state_with_function(&func)
-            .map_err(MetalError::from)?;
-        Ok(pl)
-    }
-
-    pub fn id(&self) -> DeviceId {
-        self.id
-    }
-
-    pub fn metal_device(&self) -> &metal::Device {
-        &self.device
-    }
-
-    fn drop_unused_buffers(&self) -> Result<()> {
-        let mut buffers = self.buffers.write().map_err(MetalError::from)?;
-        for subbuffers in buffers.values_mut() {
-            let newbuffers = subbuffers
-                .iter()
-                .filter(|s| Arc::strong_count(*s) > 1)
-                .map(Arc::clone)
-                .collect();
-            *subbuffers = newbuffers;
-        }
-        Ok(())
-    }
-
-    pub fn command_buffer(&self) -> Result<CommandBuffer> {
-        let mut commands = self.commands.write().map_err(MetalError::from)?;
-        let (flushed, command_buffer) = commands.command_buffer()?;
-        if flushed {
-            self.drop_unused_buffers()?
-        }
-        Ok(command_buffer)
-    }
-
-    pub fn wait_until_completed(&self) -> Result<()> {
-        let mut commands = self.commands.write().map_err(MetalError::from)?;
-        commands.wait_until_completed()
-    }
-
-    pub fn kernels(&self) -> &Kernels {
-        &self.kernels
-    }
-
-    pub fn device(&self) -> &metal::Device {
-        &self.device
-    }
-
-    /// Creates a new buffer (not necessarily zeroed).
-    /// The buffer is [MTLPrivate](https://developer.apple.com/documentation/metal/mtlstoragemode)
-    /// This means the buffer data cannot be read on the CPU directly.
-    ///
-    /// [`name`] is only used to keep track of the resource origin in case of bugs
-    pub fn new_buffer(
-        &self,
-        element_count: usize,
-        dtype: DType,
-        name: &str,
-    ) -> Result<Arc<Buffer>> {
-        let size = (element_count * dtype.size_in_bytes()) as NSUInteger;
-        self.allocate_buffer(size, MTLResourceOptions::StorageModePrivate, name)
-    }
-
-    /// Creates a new buffer (not necessarily zeroed).
-    /// The buffer is [MTLManaged](https://developer.apple.com/documentation/metal/mtlstoragemode)
-    /// This means the buffer can be read on the CPU but will require manual
-    /// synchronization when the CPU memory is modified
-    /// Used as a bridge to gather data back from the GPU
-    pub fn new_buffer_managed(&self, size: NSUInteger) -> Result<Arc<Buffer>> {
-        self.allocate_buffer(size, MTLResourceOptions::StorageModeManaged, "managed")
-    }
-
-    /// Creates a new buffer from data.
-    /// The buffer is [MTLManaged](https://developer.apple.com/documentation/metal/mtlstoragemode)
-    ///
-    /// Does not require synchronization, as [newBufferWithBytes](https://developer.apple.com/documentation/metal/mtldevice/1433429-newbufferwithbytes)
-    /// allocates the buffer and copies over the existing data before returning the MTLBuffer.
-    pub fn new_buffer_with_data<T>(&self, data: &[T]) -> Result<Arc<Buffer>> {
-        let size = core::mem::size_of_val(data) as NSUInteger;
-        let new_buffer = self.device.new_buffer_with_data(
-            data.as_ptr() as *const c_void,
-            size,
-            MTLResourceOptions::StorageModeManaged,
-        );
-        let mut buffers = self.buffers.write().map_err(MetalError::from)?;
-
-        let subbuffers = buffers
-            .entry((size, MTLResourceOptions::StorageModeManaged))
-            .or_insert(vec![]);
-
-        let new_buffer = Arc::new(new_buffer);
-        subbuffers.push(new_buffer.clone());
-        Ok(new_buffer)
-    }
-
-    pub fn allocate_zeros(&self, size_in_bytes: usize) -> Result<Arc<Buffer>> {
-        let buffer = self.allocate_buffer(
-            size_in_bytes as NSUInteger,
-            MTLResourceOptions::StorageModePrivate,
-            "allocate_zeros",
-        )?;
-        let command_buffer = self.command_buffer()?;
-        command_buffer.set_label("zeros");
-        let blit = command_buffer.new_blit_command_encoder();
-        blit.fill_buffer(
-            &buffer,
-            metal::NSRange {
-                location: 0,
-                length: buffer.length(),
-            },
-            0,
-        );
-        blit.end_encoding();
-        Ok(buffer)
-    }
-
-    /// The critical allocator algorithm
-    fn allocate_buffer(
-        &self,
-        size: NSUInteger,
-        option: MTLResourceOptions,
-        _name: &str,
-    ) -> Result<Arc<Buffer>> {
-        let mut buffers = self.buffers.write().map_err(MetalError::from)?;
-        if let Some(b) = find_available_buffer(size, option, &buffers) {
-            // Cloning also ensures we increment the strong count
-            return Ok(b.clone());
-        }
-
-        let size = buf_size(size);
-        let subbuffers = buffers.entry((size, option)).or_insert(vec![]);
-
-        let new_buffer = self.device.new_buffer(size as NSUInteger, option);
-        let new_buffer = Arc::new(new_buffer);
-        subbuffers.push(new_buffer.clone());
-
-        Ok(new_buffer)
-    }
-
-    /// Create a metal GPU capture trace on [`path`].
-    pub fn capture<P: AsRef<Path>>(&self, path: P) -> Result<()> {
-        let capture = metal::CaptureManager::shared();
-        let descriptor = metal::CaptureDescriptor::new();
-        descriptor.set_destination(metal::MTLCaptureDestination::GpuTraceDocument);
-        descriptor.set_capture_device(self);
-        // The [set_output_url] call requires an absolute path so we convert it if needed.
-        if path.as_ref().is_absolute() {
-            descriptor.set_output_url(path);
-        } else {
-            let path = std::env::current_dir()?.join(path);
-            descriptor.set_output_url(path);
-        }
-
-        capture
-            .start_capture(&descriptor)
-            .map_err(MetalError::from)?;
-        Ok(())
-    }
-}
-
-fn buf_size(size: NSUInteger) -> NSUInteger {
-    size.saturating_sub(1).next_power_of_two() as NSUInteger
-}
-
-fn find_available_buffer(
-    size: NSUInteger,
-    option: MTLResourceOptions,
-    buffers: &BufferMap,
-) -> Option<Arc<Buffer>> {
-    let mut best_buffer: Option<&Arc<Buffer>> = None;
-    let mut best_buffer_size: NSUInteger = NSUInteger::MAX;
-    for ((buffer_size, buffer_option), subbuffers) in buffers.iter() {
-        if buffer_size >= &size && buffer_size < &best_buffer_size && buffer_option == &option {
-            for sub in subbuffers {
-                if Arc::strong_count(sub) == 1 {
-                    best_buffer = Some(sub);
-                    best_buffer_size = *buffer_size;
-                }
-            }
-        }
-    }
-    best_buffer.cloned()
-}

candle-core/src/mkl.rs

@@ -333,16 +333,6 @@ pub fn vd_tanh_inplace(y: &mut [f64]) {
     unsafe { ffi::vdTanh(y.len() as i32, y.as_ptr(), y.as_mut_ptr()) }
 }
 
-#[inline]
-pub fn vs_exp_inplace(y: &mut [f32]) {
-    unsafe { ffi::vsExp(y.len() as i32, y.as_ptr(), y.as_mut_ptr()) }
-}
-
-#[inline]
-pub fn vd_exp_inplace(y: &mut [f64]) {
-    unsafe { ffi::vdExp(y.len() as i32, y.as_ptr(), y.as_mut_ptr()) }
-}
-
 #[inline]
 pub fn vs_gelu(vs: &[f32], ys: &mut [f32]) {
     for (&v, y) in vs.iter().zip(ys.iter_mut()) {
@@ -365,28 +355,6 @@ pub fn vd_gelu(vs: &[f64], ys: &mut [f64]) {
     }
 }
 
-#[inline]
-pub fn vs_silu(vs: &[f32], ys: &mut [f32]) {
-    for (&v, y) in vs.iter().zip(ys.iter_mut()) {
-        *y = -v
-    }
-    vs_exp_inplace(ys);
-    for (&v, y) in vs.iter().zip(ys.iter_mut()) {
-        *y = v / (1.0 + *y)
-    }
-}
-
-#[inline]
-pub fn vd_silu(vs: &[f64], ys: &mut [f64]) {
-    for (&v, y) in vs.iter().zip(ys.iter_mut()) {
-        *y = -v
-    }
-    vd_exp_inplace(ys);
-    for (&v, y) in vs.iter().zip(ys.iter_mut()) {
-        *y = v / (1.0 + *y)
-    }
-}
-
 macro_rules! binary_op {
     ($fn_name:ident, $ty:ty, $mkl_name:ident) => {
         #[inline]

candle-core/src/npy.rs

@@ -330,7 +330,7 @@ impl Tensor {
         path: P,
     ) -> Result<()> {
         let mut zip = zip::ZipWriter::new(File::create(path.as_ref())?);
-        let options: zip::write::FileOptions<()> =
+        let options =
             zip::write::FileOptions::default().compression_method(zip::CompressionMethod::Stored);
 
         for (name, tensor) in ts.iter() {

candle-core/src/op.rs

@@ -1,7 +1,5 @@
-//! Tensor Opertion Enums and Traits
-//!
 #![allow(clippy::redundant_closure_call)]
-use crate::Tensor;
+use crate::{CpuStorage, CudaStorage, Layout, Result, Shape, Tensor};
 use half::{bf16, f16};
 use num_traits::float::Float;
 
@@ -63,12 +61,10 @@ pub enum UnaryOp {
     GeluErf,
     Erf,
     Relu,
-    Silu,
     Tanh,
     Floor,
     Ceil,
     Round,
-    Sign,
 }
 
 #[derive(Clone)]
@@ -94,16 +90,6 @@ pub enum Op {
         dilation: usize,
     },
 
-    #[allow(dead_code)]
-    ConvTranspose1D {
-        arg: Tensor,
-        kernel: Tensor,
-        padding: usize,
-        output_padding: usize,
-        stride: usize,
-        dilation: usize,
-    },
-
     #[allow(dead_code)]
     Conv2D {
         arg: Tensor,
@@ -135,15 +121,8 @@ pub enum Op {
         stride: (usize, usize),
     },
 
-    UpsampleNearest1D {
-        arg: Tensor,
-        target_size: usize,
-    },
-    UpsampleNearest2D {
-        arg: Tensor,
-        target_h: usize,
-        target_w: usize,
-    },
+    UpsampleNearest1D(Tensor),
+    UpsampleNearest2D(Tensor),
 
     Cat(Vec<Tensor>, usize),
 
@@ -164,23 +143,126 @@ pub enum Op {
     Permute(Tensor, Vec<usize>),
     Elu(Tensor, f64),
     Powf(Tensor, f64),
-    CustomOp1(
-        Tensor,
-        std::sync::Arc<Box<dyn crate::CustomOp1 + Send + Sync>>,
-    ),
+    CustomOp1(Tensor, std::sync::Arc<Box<dyn CustomOp1 + Send + Sync>>),
     CustomOp2(
         Tensor,
         Tensor,
-        std::sync::Arc<Box<dyn crate::CustomOp2 + Send + Sync>>,
+        std::sync::Arc<Box<dyn CustomOp2 + Send + Sync>>,
     ),
     CustomOp3(
         Tensor,
         Tensor,
         Tensor,
-        std::sync::Arc<Box<dyn crate::CustomOp3 + Send + Sync>>,
+        std::sync::Arc<Box<dyn CustomOp3 + Send + Sync>>,
     ),
 }
 
+/// Unary ops that can be defined in user-land.
+pub trait CustomOp1 {
+    // Box<dyn> does not support const yet, so use a function to get the name.
+    fn name(&self) -> &'static str;
+
+    /// The forward pass, as run on a cpu device. Note that the storage can use arbitrary strides,
+    /// offsets etc so the associated layout should be used to access it.
+    fn cpu_fwd(&self, storage: &CpuStorage, layout: &Layout) -> Result<(CpuStorage, Shape)>;
+
+    /// The forward pass, as run on a gpu device. Note that the storage can use arbitrary strides,
+    /// offsets etc so the associated layout should be used to access it.
+    fn cuda_fwd(&self, _storage: &CudaStorage, _layout: &Layout) -> Result<(CudaStorage, Shape)> {
+        Err(crate::Error::Cuda(
+            format!("no cuda implementation for {}", self.name()).into(),
+        ))
+    }
+
+    /// This function takes as argument the argument `arg` used in the forward pass, the result
+    /// produced by the forward operation `res` and the gradient of the result `grad_res`.
+    /// The function should return the gradient of the argument.
+    fn bwd(&self, _arg: &Tensor, _res: &Tensor, _grad_res: &Tensor) -> Result<Option<Tensor>> {
+        Err(crate::Error::BackwardNotSupported { op: self.name() })
+    }
+}
+
+pub trait CustomOp2 {
+    fn name(&self) -> &'static str;
+
+    /// The forward pass, as run on a cpu device. Note that the storage can use arbitrary strides,
+    /// offsets etc so the associated layout should be used to access it.
+    fn cpu_fwd(
+        &self,
+        s1: &CpuStorage,
+        l1: &Layout,
+        s2: &CpuStorage,
+        l2: &Layout,
+    ) -> Result<(CpuStorage, Shape)>;
+
+    /// The forward pass, as run on a gpu device. Note that the storage can use arbitrary strides,
+    /// offsets etc so the associated layout should be used to access it.
+    fn cuda_fwd(
+        &self,
+        _: &CudaStorage,
+        _: &Layout,
+        _: &CudaStorage,
+        _: &Layout,
+    ) -> Result<(CudaStorage, Shape)> {
+        Err(crate::Error::Cuda(
+            format!("no cuda implementation for {}", self.name()).into(),
+        ))
+    }
+
+    fn bwd(
+        &self,
+        _arg1: &Tensor,
+        _arg2: &Tensor,
+        _res: &Tensor,
+        _grad_res: &Tensor,
+    ) -> Result<(Option<Tensor>, Option<Tensor>)> {
+        Err(crate::Error::BackwardNotSupported { op: self.name() })
+    }
+}
+
+pub trait CustomOp3 {
+    fn name(&self) -> &'static str;
+
+    /// The forward pass, as run on a cpu device. Note that the storage can use arbitrary strides,
+    /// offsets etc so the associated layout should be used to access it.
+    fn cpu_fwd(
+        &self,
+        s1: &CpuStorage,
+        l1: &Layout,
+        s2: &CpuStorage,
+        l2: &Layout,
+        s3: &CpuStorage,
+        l3: &Layout,
+    ) -> Result<(CpuStorage, Shape)>;
+
+    /// The forward pass, as run on a gpu device. Note that the storage can use arbitrary strides,
+    /// offsets etc so the associated layout should be used to access it.
+    fn cuda_fwd(
+        &self,
+        _: &CudaStorage,
+        _: &Layout,
+        _: &CudaStorage,
+        _: &Layout,
+        _: &CudaStorage,
+        _: &Layout,
+    ) -> Result<(CudaStorage, Shape)> {
+        Err(crate::Error::Cuda(
+            format!("no cuda implementation for {}", self.name()).into(),
+        ))
+    }
+
+    fn bwd(
+        &self,
+        _arg1: &Tensor,
+        _arg2: &Tensor,
+        _arg3: &Tensor,
+        _res: &Tensor,
+        _grad_res: &Tensor,
+    ) -> Result<(Option<Tensor>, Option<Tensor>, Option<Tensor>)> {
+        Err(crate::Error::BackwardNotSupported { op: self.name() })
+    }
+}
+
 pub trait UnaryOpT {
     const NAME: &'static str;
     const KERNEL: &'static str;
@@ -252,12 +334,10 @@ pub(crate) struct Gelu;
 pub(crate) struct GeluErf;
 pub(crate) struct Erf;
 pub(crate) struct Relu;
-pub(crate) struct Silu;
 pub(crate) struct Tanh;
 pub(crate) struct Floor;
 pub(crate) struct Ceil;
 pub(crate) struct Round;
-pub(crate) struct Sign;
 
 macro_rules! bin_op {
     ($op:ident, $name: literal, $e: expr, $f32_vec: ident, $f64_vec: ident) => {
@@ -456,20 +536,13 @@ unary_op!(Log, "log", v, v.ln(), vs_ln, vd_ln);
 unary_op!(Sin, "sin", v, v.sin(), vs_sin, vd_sin);
 unary_op!(Cos, "cos", v, v.cos(), vs_cos, vd_cos);
 unary_op!(Tanh, "tanh", v, v.tanh(), vs_tanh, vd_tanh);
+unary_op!(Abs, "abs", v, v.abs());
 unary_op!(Neg, "neg", v, -v);
 unary_op!(Recip, "recip", v, v.recip());
 unary_op!(Sqr, "sqr", v, v * v, vs_sqr, vd_sqr);
 unary_op!(Sqrt, "sqrt", v, v.sqrt(), vs_sqrt, vd_sqrt);
 
-// Hardcode the value for sqrt(2/pi)
-// https://github.com/huggingface/candle/issues/1982
-#[allow(clippy::excessive_precision)]
-const SQRT_TWO_OVER_PI_F32: f32 = 0.79788456080286535587989211986876373;
-#[allow(clippy::excessive_precision)]
-const SQRT_TWO_OVER_PI_F64: f64 = 0.79788456080286535587989211986876373;
-
-/// Tanh based approximation of the `gelu` operation
-/// GeluErf is the more precise one.
+/// `gelu` operation
 /// <https://en.wikipedia.org/wiki/Activation_function#Comparison_of_activation_functions>
 impl UnaryOpT for Gelu {
     const NAME: &'static str = "gelu";
@@ -480,7 +553,7 @@ impl UnaryOpT for Gelu {
             * v
             * (bf16::ONE
                 + bf16::tanh(
-                    bf16::from_f32_const(SQRT_TWO_OVER_PI_F32)
+                    (bf16::from_f32_const(2.0) / bf16::PI).sqrt()
                         * v
                         * (bf16::ONE + bf16::from_f32_const(0.044715) * v * v),
                 ))
@@ -491,18 +564,22 @@ impl UnaryOpT for Gelu {
             * v
             * (f16::ONE
                 + f16::tanh(
-                    f16::from_f32_const(SQRT_TWO_OVER_PI_F32)
+                    (f16::from_f32_const(2.0) / f16::PI).sqrt()
                         * v
                         * (f16::ONE + f16::from_f32_const(0.044715) * v * v),
                 ))
     }
     #[inline(always)]
     fn f32(v: f32) -> f32 {
-        0.5 * v * (1.0 + f32::tanh(SQRT_TWO_OVER_PI_F32 * v * (1.0 + 0.044715 * v * v)))
+        0.5 * v
+            * (1.0
+                + f32::tanh((2.0f32 / std::f32::consts::PI).sqrt() * v * (1.0 + 0.044715 * v * v)))
     }
     #[inline(always)]
     fn f64(v: f64) -> f64 {
-        0.5 * v * (1.0 + f64::tanh(SQRT_TWO_OVER_PI_F64 * v * (1.0 + 0.044715 * v * v)))
+        0.5 * v
+            * (1.0
+                + f64::tanh((2.0f64 / std::f64::consts::PI).sqrt() * v * (1.0 + 0.044715 * v * v)))
     }
     #[inline(always)]
     fn u8(_: u8) -> u8 {
@@ -555,8 +632,6 @@ impl UnaryOpT for Gelu {
     }
 }
 
-/// `erf` operation
-/// <https://en.wikipedia.org/wiki/Error_function>
 impl UnaryOpT for Erf {
     const NAME: &'static str = "erf";
     const KERNEL: &'static str = "uerf";
@@ -591,111 +666,6 @@ impl UnaryOpT for Erf {
     }
 }
 
-/// Silu operation
-impl UnaryOpT for Silu {
-    const NAME: &'static str = "silu";
-    const V: Self = Silu;
-    #[inline(always)]
-    fn bf16(v: bf16) -> bf16 {
-        v / (bf16::ONE + (-v).exp())
-    }
-    #[inline(always)]
-    fn f16(v: f16) -> f16 {
-        v / (f16::ONE + (-v).exp())
-    }
-    #[inline(always)]
-    fn f32(v: f32) -> f32 {
-        v / (1.0 + (-v).exp())
-    }
-    #[inline(always)]
-    fn f64(v: f64) -> f64 {
-        v / (1.0 + (-v).exp())
-    }
-    #[inline(always)]
-    fn u8(_: u8) -> u8 {
-        0
-    }
-    #[inline(always)]
-    fn u32(_: u32) -> u32 {
-        0
-    }
-    #[inline(always)]
-    fn i64(_: i64) -> i64 {
-        0
-    }
-    const KERNEL: &'static str = "usilu";
-
-    #[cfg(feature = "mkl")]
-    const F32_VEC: bool = true;
-
-    #[cfg(feature = "mkl")]
-    #[inline(always)]
-    fn f32_vec(xs: &[f32], ys: &mut [f32]) {
-        crate::mkl::vs_silu(xs, ys)
-    }
-
-    #[cfg(feature = "mkl")]
-    const F64_VEC: bool = true;
-
-    #[cfg(feature = "mkl")]
-    #[inline(always)]
-    fn f64_vec(xs: &[f64], ys: &mut [f64]) {
-        crate::mkl::vd_silu(xs, ys)
-    }
-
-    #[cfg(feature = "accelerate")]
-    const F32_VEC: bool = true;
-
-    #[cfg(feature = "accelerate")]
-    #[inline(always)]
-    fn f32_vec(xs: &[f32], ys: &mut [f32]) {
-        crate::accelerate::vs_silu(xs, ys)
-    }
-
-    #[cfg(feature = "accelerate")]
-    const F64_VEC: bool = true;
-
-    #[cfg(feature = "accelerate")]
-    #[inline(always)]
-    fn f64_vec(xs: &[f64], ys: &mut [f64]) {
-        crate::accelerate::vd_silu(xs, ys)
-    }
-}
-
-impl UnaryOpT for Abs {
-    const NAME: &'static str = "abs";
-    const KERNEL: &'static str = "uabs";
-    const V: Self = Abs;
-    #[inline(always)]
-    fn bf16(v: bf16) -> bf16 {
-        v.abs()
-    }
-    #[inline(always)]
-    fn f16(v: f16) -> f16 {
-        v.abs()
-    }
-    #[inline(always)]
-    fn f32(v: f32) -> f32 {
-        v.abs()
-    }
-    #[inline(always)]
-    fn f64(v: f64) -> f64 {
-        v.abs()
-    }
-    #[inline(always)]
-    fn u8(v: u8) -> u8 {
-        v
-    }
-    #[inline(always)]
-    fn u32(v: u32) -> u32 {
-        v
-    }
-    #[inline(always)]
-    fn i64(v: i64) -> i64 {
-        v.abs()
-    }
-}
-
 impl UnaryOpT for Ceil {
     const NAME: &'static str = "ceil";
     const KERNEL: &'static str = "uceil";
@@ -917,10 +887,6 @@ impl BackpropOp {
         };
         Self(op)
     }
-
-    pub(crate) fn is_none(&self) -> bool {
-        self.0.is_none()
-    }
 }
 
 impl std::ops::Deref for BackpropOp {
@@ -929,37 +895,3 @@ impl std::ops::Deref for BackpropOp {
         &self.0
     }
 }
-
-impl UnaryOpT for Sign {
-    const NAME: &'static str = "sign";
-    const KERNEL: &'static str = "usign";
-    const V: Self = Sign;
-    #[inline(always)]
-    fn bf16(v: bf16) -> bf16 {
-        bf16::from((v > bf16::ZERO) as i8) - bf16::from((v < bf16::ZERO) as i8)
-    }
-    #[inline(always)]
-    fn f16(v: f16) -> f16 {
-        f16::from((v > f16::ZERO) as i8) - f16::from((v < f16::ZERO) as i8)
-    }
-    #[inline(always)]
-    fn f32(v: f32) -> f32 {
-        f32::from(v > 0.) - f32::from(v < 0.)
-    }
-    #[inline(always)]
-    fn f64(v: f64) -> f64 {
-        f64::from(v > 0.) - f64::from(v < 0.)
-    }
-    #[inline(always)]
-    fn u8(v: u8) -> u8 {
-        u8::min(1, v)
-    }
-    #[inline(always)]
-    fn u32(v: u32) -> u32 {
-        u32::min(1, v)
-    }
-    #[inline(always)]
-    fn i64(v: i64) -> i64 {
-        (v > 0) as i64 - (v < 0) as i64
-    }
-}

candle-core/src/pickle.rs

@@ -1,7 +1,7 @@
-//! Just enough pickle support to be able to read PyTorch checkpoints.
+// Just enough pickle support to be able to read PyTorch checkpoints.
 // This hardcodes objects that are required for tensor reading, we may want to make this a bit more
 // composable/tensor agnostic at some point.
-use crate::{Context, DType, Error as E, Layout, Result, Tensor};
+use crate::{DType, Error as E, Layout, Result, Tensor};
 use byteorder::{LittleEndian, ReadBytesExt};
 use std::collections::HashMap;
 use std::io::BufRead;
@@ -42,7 +42,7 @@ pub enum OpCode {
     Stop = b'.',
     NewObj = 0x81,
     EmptyList = b']',
-    BinFloat = b'G',
+    BinFloat = b'g',
     Append = b'a',
     Appends = b'e',
 }
@@ -217,13 +217,6 @@ impl Object {
                 let args = args.remove(1);
                 (callable, args)
             }
-            Object::Class {
-                module_name,
-                class_name,
-            } if module_name == "torch._utils" && class_name == "_rebuild_parameter" => {
-                let mut args = args.tuple()?;
-                args.remove(0).reduce()?
-            }
             _ => (callable, args),
         };
         match callable {
@@ -234,11 +227,13 @@ impl Object {
             _ => return Ok(None),
         };
         let (layout, dtype, file_path, storage_size) = rebuild_args(args)?;
+        let mut path = dir_name.to_path_buf();
+        path.push(file_path);
         Ok(Some(TensorInfo {
             name,
             dtype,
             layout,
-            path: format!("{}/{}", dir_name.to_string_lossy(), file_path),
+            path: path.to_string_lossy().into_owned(),
             storage_size,
         }))
     }
@@ -350,10 +345,8 @@ impl Stack {
                 module_name,
                 class_name,
             } => {
-                if module_name == "collections"
-                    && (class_name == "OrderedDict" || class_name == "defaultdict")
-                {
-                    // TODO: have a separate ordered dict and a separate default dict.
+                if module_name == "collections" && class_name == "OrderedDict" {
+                    // TODO: have a separate ordered dict.
                     Some(Object::Dict(vec![]))
                 } else {
                     None
@@ -462,10 +455,7 @@ impl Stack {
                 self.push(Object::Int(arg))
             }
             OpCode::BinFloat => {
-                // Somehow floats are encoded using BigEndian whereas int types use LittleEndian.
-                // https://github.com/python/cpython/blob/0c80da4c14d904a367968955544dd6ae58c8101c/Lib/pickletools.py#L855
-                // https://github.com/pytorch/pytorch/blob/372d078f361e726bb4ac0884ac334b04c58179ef/torch/_weights_only_unpickler.py#L243
-                let arg = r.read_f64::<byteorder::BigEndian>()?;
+                let arg = r.read_f64::<LittleEndian>()?;
                 self.push(Object::Float(arg))
             }
             OpCode::BinUnicode => {
@@ -537,7 +527,7 @@ impl Stack {
                         crate::bail!("setitems: not an even number of objects")
                     }
                     while let Some(value) = objs.pop() {
-                        let key = objs.pop().context("empty objs")?;
+                        let key = objs.pop().unwrap();
                         d.push((key, value))
                     }
                 } else {
@@ -557,7 +547,7 @@ impl Stack {
                     crate::bail!("setitems: not an even number of objects")
                 }
                 while let Some(value) = objs.pop() {
-                    let key = objs.pop().context("empty objs")?;
+                    let key = objs.pop().unwrap();
                     pydict.push((key, value))
                 }
                 self.push(Object::Dict(pydict))
@@ -637,16 +627,9 @@ pub struct TensorInfo {
     pub storage_size: usize,
 }
 
-/// Read the tensor info from a .pth file.
-///
-/// # Arguments
-/// * `file` - The path to the .pth file.
-/// * `verbose` - Whether to print debug information.
-/// * `key` - Optional key to retrieve `state_dict` from the pth file.
 pub fn read_pth_tensor_info<P: AsRef<std::path::Path>>(
     file: P,
     verbose: bool,
-    key: Option<&str>,
 ) -> Result<Vec<TensorInfo>> {
     let file = std::fs::File::open(file)?;
     let zip_reader = std::io::BufReader::new(file);
@@ -661,16 +644,15 @@ pub fn read_pth_tensor_info<P: AsRef<std::path::Path>>(
         if !file_name.ends_with("data.pkl") {
             continue;
         }
-        let dir_name = std::path::PathBuf::from(file_name.strip_suffix(".pkl").context("no .pkl")?);
+        let dir_name = std::path::PathBuf::from(file_name.strip_suffix(".pkl").unwrap());
         let reader = zip.by_name(file_name)?;
         let mut reader = std::io::BufReader::new(reader);
         let mut stack = Stack::empty();
         stack.read_loop(&mut reader)?;
         let obj = stack.finalize()?;
         if VERBOSE || verbose {
-            println!("{obj:#?}");
+            println!("{obj:?}");
         }
-
         let obj = match obj {
             Object::Build { callable, args } => match *callable {
                 Object::Reduce { callable, args: _ } => match *callable {
@@ -684,24 +666,6 @@ pub fn read_pth_tensor_info<P: AsRef<std::path::Path>>(
             },
             obj => obj,
         };
-
-        // If key is provided, then we need to extract the state_dict from the object.
-        let obj = if let Some(key) = key {
-            if let Object::Dict(key_values) = obj {
-                key_values
-                    .into_iter()
-                    .find(|(k, _)| *k == Object::Unicode(key.to_owned()))
-                    .map(|(_, v)| v)
-                    .ok_or_else(|| E::Msg(format!("key {key} not found")))?
-            } else {
-                obj
-            }
-        } else {
-            obj
-        };
-
-        // If the object is a dict, then we can extract the tensor info from it.
-        // NOTE: We are assuming that the `obj` is state_dict by this stage.
         if let Object::Dict(key_values) = obj {
             for (name, value) in key_values.into_iter() {
                 match value.into_tensor_info(name, &dir_name) {
@@ -724,8 +688,8 @@ pub struct PthTensors {
 }
 
 impl PthTensors {
-    pub fn new<P: AsRef<std::path::Path>>(path: P, key: Option<&str>) -> Result<Self> {
-        let tensor_infos = read_pth_tensor_info(path.as_ref(), false, key)?;
+    pub fn new<P: AsRef<std::path::Path>>(path: P) -> Result<Self> {
+        let tensor_infos = read_pth_tensor_info(path.as_ref(), false)?;
         let tensor_infos = tensor_infos
             .into_iter()
             .map(|ti| (ti.name.to_string(), ti))
@@ -739,7 +703,6 @@ impl PthTensors {
     }
 
     pub fn get(&self, name: &str) -> Result<Option<Tensor>> {
-        use std::io::Read;
         let tensor_info = match self.tensor_infos.get(name) {
             None => return Ok(None),
             Some(tensor_info) => tensor_info,
@@ -748,56 +711,27 @@ impl PthTensors {
         let zip_reader = std::io::BufReader::new(std::fs::File::open(&self.path)?);
         let mut zip = zip::ZipArchive::new(zip_reader)?;
         let mut reader = zip.by_name(&tensor_info.path)?;
-        let is_fortran_contiguous = tensor_info.layout.is_fortran_contiguous();
-        let rank = tensor_info.layout.shape().rank();
 
-        // Reading the data is a bit tricky as it can be strided, for now only support the basic
-        // case and when the tensor is fortran contiguous.
-        if !tensor_info.layout.is_contiguous() && !is_fortran_contiguous {
+        // Reading the data is a bit tricky as it can be strided, use an offset, etc.
+        // For now only support the basic case.
+        if tensor_info.layout.start_offset() != 0 || !tensor_info.layout.is_contiguous() {
             crate::bail!(
                 "cannot retrieve non-contiguous tensors {:?}",
                 tensor_info.layout
             )
         }
-        let start_offset = tensor_info.layout.start_offset();
-        if start_offset > 0 {
-            std::io::copy(
-                &mut reader.by_ref().take(start_offset as u64),
-                &mut std::io::sink(),
-            )?;
-        }
         let tensor = Tensor::from_reader(
             tensor_info.layout.shape().clone(),
             tensor_info.dtype,
             &mut reader,
         )?;
-
-        if rank > 1 && is_fortran_contiguous {
-            // Reverse the shape, e.g. Shape(2, 3, 4) -> Shape(4, 3, 2)
-            let shape_reversed: Vec<_> = tensor_info.layout.dims().iter().rev().cloned().collect();
-            let tensor = tensor.reshape(shape_reversed)?;
-
-            // Permute (transpose) the dimensions, e.g. Shape(4, 3, 2) -> Shape(2, 3, 4)
-            let dim_indeces_reversed: Vec<_> = (0..rank).rev().collect();
-            let tensor = tensor.permute(dim_indeces_reversed)?;
-            Ok(Some(tensor))
-        } else {
-            Ok(Some(tensor))
-        }
+        Ok(Some(tensor))
     }
 }
 
-/// Read all the tensors from a PyTorch pth file with a given key.
-///
-/// # Arguments
-/// * `path` - Path to the pth file.
-/// * `key` - Optional key to retrieve `state_dict` from the pth file. Sometimes the pth file
-///           contains multiple objects and the state_dict is the one we are interested in.
-pub fn read_all_with_key<P: AsRef<std::path::Path>>(
-    path: P,
-    key: Option<&str>,
-) -> Result<Vec<(String, Tensor)>> {
-    let pth = PthTensors::new(path, key)?;
+/// Read all the tensors from a PyTorch pth file.
+pub fn read_all<P: AsRef<std::path::Path>>(path: P) -> Result<Vec<(String, Tensor)>> {
+    let pth = PthTensors::new(path)?;
     let tensor_names = pth.tensor_infos.keys();
     let mut tensors = Vec::with_capacity(tensor_names.len());
     for name in tensor_names {
@@ -807,11 +741,3 @@ pub fn read_all_with_key<P: AsRef<std::path::Path>>(
     }
     Ok(tensors)
 }
-
-/// Read all the tensors from a PyTorch pth file.
-///
-/// # Arguments
-/// * `path` - Path to the pth file.
-pub fn read_all<P: AsRef<std::path::Path>>(path: P) -> Result<Vec<(String, Tensor)>> {
-    read_all_with_key(path, None)
-}

candle-core/src/quantized/avx.rs

@@ -50,9 +50,14 @@ pub(crate) unsafe fn mul_sum_i8_pairs_float(x: __m256i, y: __m256i) -> __m256 {
 #[inline(always)]
 pub(crate) fn vec_dot_q4_0_q8_0(n: usize, xs: &[BlockQ4_0], ys: &[BlockQ8_0]) -> Result<f32> {
     let qk = QK8_0;
+    let nb = n / qk;
     if n % QK8_0 != 0 {
         crate::bail!("vec_dot_q4_0_q8_0: {n} is not divisible by {qk}")
     }
+    if nb % 2 != 0 {
+        crate::bail!("vec_dot_q4_0_q8_0: {nb} is not even")
+    }
+
     unsafe {
         let mut acc = _mm256_setzero_ps();
         for (x, y) in xs.iter().zip(ys.iter()) {
@@ -353,7 +358,7 @@ pub(crate) fn vec_dot_q3k_q8k(n: usize, xs: &[BlockQ3K], ys: &[BlockQ8K]) -> Res
                 q3 = q3.add(32);
 
                 // Prepare low and high bits
-                // We hardcode the shifts here to avoid loading them into a separate register
+                // We hardcode the shifts here to avoid loading them into a seperate register
                 let q3l_0 = _mm256_and_si256(q3bits, m3);
                 let q3h_0 = if j == 0 {
                     _mm256_srli_epi16(_mm256_andnot_si256(hbits, _mm256_slli_epi16(mone, 0)), 0)
@@ -586,7 +591,7 @@ pub(crate) fn vec_dot_q5k_q8k(n: usize, xs: &[BlockQ5K], ys: &[BlockQ8K]) -> Res
                 let q5bits = _mm256_loadu_si256(q5 as *const __m256i);
                 q5 = q5.add(32);
 
-                //Similar to q3k we hardcode the shifts here to avoid loading them into a separate register
+                //Similar to q3k we hardcode the shifts here to avoid loading them into a seperate register
                 let q5l_0 = _mm256_and_si256(q5bits, m4);
                 let q5l_0_shift_input = _mm256_and_si256(hbits, hmask);
                 let q5l_0_right_shift = match j {

candle-core/src/quantized/cuda.rs

@@ -1,734 +0,0 @@
-use super::{GgmlDType, QStorage};
-use crate::quantized::k_quants::GgmlType;
-use crate::{backend::BackendDevice, cuda_backend::WrapErr};
-use crate::{CudaDevice, CudaStorage, Result};
-use half::f16;
-
-use cudarc::driver::{CudaSlice, CudaView, DeviceSlice};
-
-#[derive(Clone, Debug)]
-struct PaddedCudaSlice {
-    inner: CudaSlice<u8>,
-    len: usize,
-}
-
-#[derive(Clone, Debug)]
-pub struct QCudaStorage {
-    data: PaddedCudaSlice,
-    dtype: GgmlDType,
-    device: CudaDevice,
-}
-
-static FORCE_DMMV: std::sync::atomic::AtomicBool = std::sync::atomic::AtomicBool::new(false);
-
-pub fn set_force_dmmv(f: bool) {
-    FORCE_DMMV.store(f, std::sync::atomic::Ordering::Relaxed)
-}
-
-pub const WARP_SIZE: usize = 32;
-pub const MMQ_X_Q4_0_AMPERE: usize = 4;
-pub const MMQ_Y_Q4_0_AMPERE: usize = 32;
-pub const NWARPS_Q4_0_AMPERE: usize = 4;
-pub const GGML_CUDA_MMV_X: usize = 32;
-pub const GGML_CUDA_MMV_Y: usize = 1;
-pub const CUDA_QUANTIZE_BLOCK_SIZE: usize = 256;
-pub const CUDA_DEQUANTIZE_BLOCK_SIZE: usize = 256;
-pub const MATRIX_ROW_PADDING: usize = 512;
-
-fn ceil_div(p: usize, q: usize) -> usize {
-    p.div_ceil(q)
-}
-
-fn pad(p: usize, q: usize) -> usize {
-    ceil_div(p, q) * q
-}
-
-fn quantize_q8_1(
-    src: &CudaView<f32>,
-    dst: &mut CudaSlice<u8>,
-    elem_count: usize,
-    ky: usize,
-    dev: &CudaDevice,
-) -> Result<()> {
-    use cudarc::driver::LaunchAsync;
-
-    let kx = elem_count;
-    let kx_padded = pad(kx, MATRIX_ROW_PADDING);
-    let num_blocks = ceil_div(kx_padded, CUDA_QUANTIZE_BLOCK_SIZE);
-    let func = dev.get_or_load_func("quantize_q8_1", candle_kernels::QUANTIZED)?;
-    let cfg = cudarc::driver::LaunchConfig {
-        grid_dim: (num_blocks as u32, ky as u32, 1),
-        block_dim: (CUDA_QUANTIZE_BLOCK_SIZE as u32, 1, 1),
-        shared_mem_bytes: 0,
-    };
-    let params = (src, dst, kx as i32, kx_padded as i32);
-    unsafe { func.launch(cfg, params) }.w()?;
-    Ok(())
-}
-
-fn dequantize_f32(
-    data: &PaddedCudaSlice,
-    dtype: GgmlDType,
-    elem_count: usize,
-    dev: &CudaDevice,
-) -> Result<CudaStorage> {
-    use cudarc::driver::LaunchAsync;
-
-    let nb = (elem_count + 255) / 256;
-    let (kernel_name, is_k, block_dim, num_blocks) = match dtype {
-        GgmlDType::Q4_0 => ("dequantize_block_q4_0_f32", false, 32, nb),
-        GgmlDType::Q4_1 => ("dequantize_block_q4_1_f32", false, 32, nb),
-        GgmlDType::Q5_0 => (
-            "dequantize_block_q5_0_f32",
-            false,
-            CUDA_DEQUANTIZE_BLOCK_SIZE,
-            ceil_div(elem_count, 2 * CUDA_DEQUANTIZE_BLOCK_SIZE),
-        ),
-        GgmlDType::Q5_1 => (
-            "dequantize_block_q5_1_f32",
-            false,
-            CUDA_DEQUANTIZE_BLOCK_SIZE,
-            ceil_div(elem_count, 2 * CUDA_DEQUANTIZE_BLOCK_SIZE),
-        ),
-        GgmlDType::Q8_0 => ("dequantize_block_q8_0_f32", false, 32, nb),
-        GgmlDType::Q2K => ("dequantize_block_q2_K_f32", true, 64, nb),
-        GgmlDType::Q3K => ("dequantize_block_q3_K_f32", true, 64, nb),
-        GgmlDType::Q4K => ("dequantize_block_q4_K_f32", true, 32, nb),
-        GgmlDType::Q5K => ("dequantize_block_q5_K_f32", true, 64, nb),
-        GgmlDType::Q6K => ("dequantize_block_q6_K_f32", true, 64, nb),
-        GgmlDType::Q8K => ("dequantize_block_q8_K_f32", true, 32, nb),
-        _ => crate::bail!("unsupported dtype for dequantize {dtype:?}"),
-    };
-    let func = dev.get_or_load_func(kernel_name, candle_kernels::QUANTIZED)?;
-    let dst = unsafe { dev.alloc::<f32>(elem_count).w()? };
-    // See e.g.
-    // https://github.com/ggerganov/llama.cpp/blob/cbbd1efa06f8c09f9dff58ff9d9af509cc4c152b/ggml-cuda.cu#L7270
-    let cfg = cudarc::driver::LaunchConfig {
-        grid_dim: (num_blocks as u32, 1, 1),
-        block_dim: (block_dim as u32, 1, 1),
-        shared_mem_bytes: 0,
-    };
-
-    if is_k {
-        let params = (&data.inner, &dst);
-        unsafe { func.launch(cfg, params) }.w()?;
-    } else {
-        let nb32 = match dtype {
-            GgmlDType::Q5_0 | GgmlDType::Q5_1 => elem_count,
-            _ => elem_count / 32,
-        };
-        let params = (&data.inner, &dst, nb32 as i32);
-        unsafe { func.launch(cfg, params) }.w()?;
-    }
-    Ok(CudaStorage::wrap_cuda_slice(dst, dev.clone()))
-}
-
-fn dequantize_f16(
-    data: &PaddedCudaSlice,
-    dtype: GgmlDType,
-    elem_count: usize,
-    dev: &CudaDevice,
-) -> Result<CudaStorage> {
-    use cudarc::driver::LaunchAsync;
-
-    let nb = (elem_count + 255) / 256;
-    let (kernel_name, is_k, block_dim, num_blocks) = match dtype {
-        GgmlDType::Q4_0 => ("dequantize_block_q4_0_f16", false, 32, nb),
-        GgmlDType::Q4_1 => ("dequantize_block_q4_1_f16", false, 32, nb),
-        GgmlDType::Q5_0 => (
-            "dequantize_block_q5_0_f16",
-            false,
-            CUDA_DEQUANTIZE_BLOCK_SIZE,
-            ceil_div(elem_count, 2 * CUDA_DEQUANTIZE_BLOCK_SIZE),
-        ),
-        GgmlDType::Q5_1 => (
-            "dequantize_block_q5_1_f16",
-            false,
-            CUDA_DEQUANTIZE_BLOCK_SIZE,
-            ceil_div(elem_count, 2 * CUDA_DEQUANTIZE_BLOCK_SIZE),
-        ),
-        GgmlDType::Q8_0 => ("dequantize_block_q8_0_f16", false, 32, nb),
-        GgmlDType::Q2K => ("dequantize_block_q2_K_f16", true, 64, nb),
-        GgmlDType::Q3K => ("dequantize_block_q3_K_f16", true, 64, nb),
-        GgmlDType::Q4K => ("dequantize_block_q4_K_f16", true, 32, nb),
-        GgmlDType::Q5K => ("dequantize_block_q5_K_f16", true, 64, nb),
-        GgmlDType::Q6K => ("dequantize_block_q6_K_f16", true, 64, nb),
-        GgmlDType::Q8K => ("dequantize_block_q8_K_f16", true, 32, nb),
-        _ => crate::bail!("unsupported dtype for dequantize {dtype:?}"),
-    };
-    let func = dev.get_or_load_func(kernel_name, candle_kernels::QUANTIZED)?;
-    let dst = unsafe { dev.alloc::<f16>(elem_count).w()? };
-    // See e.g.
-    // https://github.com/ggerganov/llama.cpp/blob/cbbd1efa06f8c09f9dff58ff9d9af509cc4c152b/ggml-cuda.cu#L7270
-    let cfg = cudarc::driver::LaunchConfig {
-        grid_dim: (num_blocks as u32, 1, 1),
-        block_dim: (block_dim as u32, 1, 1),
-        shared_mem_bytes: 0,
-    };
-
-    if is_k {
-        let params = (&data.inner, &dst);
-        unsafe { func.launch(cfg, params) }.w()?;
-    } else {
-        let nb32 = match dtype {
-            GgmlDType::Q5_0 | GgmlDType::Q5_1 => elem_count,
-            _ => elem_count / 32,
-        };
-        let params = (&data.inner, &dst, nb32 as i32);
-        unsafe { func.launch(cfg, params) }.w()?;
-    }
-    Ok(CudaStorage::wrap_cuda_slice(dst, dev.clone()))
-}
-
-fn dequantize_mul_mat_vec(
-    data: &PaddedCudaSlice,
-    y: &CudaView<f32>,
-    dtype: GgmlDType,
-    ncols: usize,
-    nrows: usize,
-    dev: &CudaDevice,
-) -> Result<CudaStorage> {
-    use cudarc::driver::LaunchAsync;
-
-    let data_elems = data.len / dtype.type_size() * dtype.block_size();
-    if data_elems < ncols * nrows {
-        crate::bail!("unexpected data size {}, ncols {ncols} {nrows}", data_elems)
-    }
-    if y.len() != ncols {
-        crate::bail!("unexpected y size {}, ncols {ncols} {nrows}", y.len())
-    }
-    let kernel_name = match dtype {
-        GgmlDType::Q4_0 => "dequantize_mul_mat_vec_q4_0_cuda",
-        GgmlDType::Q4_1 => "dequantize_mul_mat_vec_q4_1_cuda",
-        GgmlDType::Q5_0 => "dequantize_mul_mat_vec_q5_0_cuda",
-        GgmlDType::Q5_1 => "dequantize_mul_mat_vec_q5_1_cuda",
-        GgmlDType::Q8_0 => "dequantize_mul_mat_vec_q8_0_cuda",
-        GgmlDType::Q2K => "dequantize_mul_mat_vec_q2_k",
-        GgmlDType::Q3K => "dequantize_mul_mat_vec_q3_k",
-        GgmlDType::Q4K => "dequantize_mul_mat_vec_q4_k",
-        GgmlDType::Q5K => "dequantize_mul_mat_vec_q5_k",
-        GgmlDType::Q6K => "dequantize_mul_mat_vec_q6_k",
-        _ => crate::bail!("unsupported dtype for quantized matmul {dtype:?}"),
-    };
-    let func = dev.get_or_load_func(kernel_name, candle_kernels::QUANTIZED)?;
-    let dst = unsafe { dev.alloc::<f32>(nrows).w()? };
-    let block_num_y = ceil_div(nrows, GGML_CUDA_MMV_Y);
-    let cfg = cudarc::driver::LaunchConfig {
-        grid_dim: (block_num_y as u32, 1, 1),
-        block_dim: (WARP_SIZE as u32, GGML_CUDA_MMV_Y as u32, 1),
-        shared_mem_bytes: 0,
-    };
-
-    let params = (&data.inner, y, &dst, ncols as i32, nrows as i32);
-    unsafe { func.launch(cfg, params) }.w()?;
-    Ok(CudaStorage::wrap_cuda_slice(dst, dev.clone()))
-}
-
-fn mul_mat_vec_via_q8_1(
-    data: &PaddedCudaSlice,
-    y: &CudaView<f32>,
-    dtype: GgmlDType,
-    ncols: usize,
-    nrows: usize,
-    b_size: usize,
-    dev: &CudaDevice,
-) -> Result<CudaStorage> {
-    use cudarc::driver::LaunchAsync;
-
-    let data_elems = data.len / dtype.type_size() * dtype.block_size();
-    if data_elems < ncols * nrows {
-        crate::bail!("unexpected data size {}, ncols {ncols} {nrows}", data_elems)
-    }
-    if y.len() != ncols * b_size {
-        crate::bail!("unexpected y size {}, ncols {ncols} {nrows}", y.len())
-    }
-    if b_size == 0 || b_size > 8 {
-        crate::bail!("only bsize between 1 and 8 are supported, got {b_size}")
-    }
-    // Start by quantizing y
-    let ncols_padded = pad(ncols, MATRIX_ROW_PADDING);
-    let y_size_in_bytes =
-        b_size * ncols_padded * GgmlDType::Q8_1.type_size() / GgmlDType::Q8_1.block_size();
-    let mut y_q8_1 = unsafe { dev.alloc::<u8>(y_size_in_bytes).w()? };
-    quantize_q8_1(y, &mut y_q8_1, ncols, b_size, dev)?;
-
-    let kernel_name = match dtype {
-        GgmlDType::Q4_0 => "mul_mat_vec_q4_0_q8_1_cuda",
-        GgmlDType::Q4_1 => "mul_mat_vec_q4_1_q8_1_cuda",
-        GgmlDType::Q5_0 => "mul_mat_vec_q5_0_q8_1_cuda",
-        GgmlDType::Q5_1 => "mul_mat_vec_q5_1_q8_1_cuda",
-        GgmlDType::Q8_0 => "mul_mat_vec_q8_0_q8_1_cuda",
-        GgmlDType::Q2K => "mul_mat_vec_q2_K_q8_1_cuda",
-        GgmlDType::Q3K => "mul_mat_vec_q3_K_q8_1_cuda",
-        GgmlDType::Q4K => "mul_mat_vec_q4_K_q8_1_cuda",
-        GgmlDType::Q5K => "mul_mat_vec_q5_K_q8_1_cuda",
-        GgmlDType::Q6K => "mul_mat_vec_q6_K_q8_1_cuda",
-        _ => crate::bail!("unsupported dtype for quantized matmul {dtype:?}"),
-    };
-    let kernel_name = format!("{kernel_name}{b_size}");
-    let func = dev.get_or_load_func(&kernel_name, candle_kernels::QUANTIZED)?;
-    let dst = unsafe { dev.alloc::<f32>(nrows * b_size).w()? };
-    // https://github.com/ggerganov/llama.cpp/blob/facb8b56f8fd3bb10a693bf0943ae9d69d0828ef/ggml-cuda/mmvq.cu#L98
-    let (nblocks, nwarps) = match b_size {
-        1 => (nrows as u32, 4),
-        2..=4 => ((nrows as u32 + 1) / 2, 4),
-        5..=8 => ((nrows as u32 + 1) / 2, 2),
-        _ => crate::bail!("unexpected bsize {b_size}"),
-    };
-    let cfg = cudarc::driver::LaunchConfig {
-        grid_dim: (nblocks, 1, 1),
-        block_dim: (WARP_SIZE as u32, nwarps, 1),
-        shared_mem_bytes: 0,
-    };
-
-    let params = (
-        &data.inner,
-        &y_q8_1,
-        &dst,
-        /* ncols_x */ ncols as i32,
-        /* nrows_x */ nrows as i32,
-        /* nrows_y */ ncols_padded as i32,
-        /* nrows_dst */ nrows as i32,
-    );
-    unsafe { func.launch(cfg, params) }.w()?;
-    Ok(CudaStorage::wrap_cuda_slice(dst, dev.clone()))
-}
-
-#[allow(clippy::too_many_arguments)]
-fn mul_mat_via_q8_1(
-    data: &PaddedCudaSlice,
-    y: &CudaView<f32>,
-    dtype: GgmlDType,
-    x_rows: usize,
-    x_cols: usize,
-    y_rows: usize,
-    y_cols: usize,
-    dev: &CudaDevice,
-) -> Result<CudaStorage> {
-    use cudarc::driver::LaunchAsync;
-
-    let data_elems = data.len / dtype.type_size() * dtype.block_size();
-    if data_elems < x_rows * x_cols {
-        crate::bail!("unexpected lhs size {}, {x_rows} {x_cols}", data_elems)
-    }
-    if y.len() != y_rows * y_cols {
-        crate::bail!("unexpected y size {}, {y_rows} {y_cols}", y.len())
-    }
-    if x_cols != y_rows {
-        crate::bail!("unexpected x/y size {x_rows} {x_cols} {y_rows} {y_cols}")
-    }
-    let k = x_cols;
-    // Start by quantizing y
-    let k_padded = pad(k, MATRIX_ROW_PADDING);
-    let y_size_in_bytes =
-        k_padded * y_cols * GgmlDType::Q8_1.type_size() / GgmlDType::Q8_1.block_size();
-    let mut y_q8_1 = unsafe { dev.alloc::<u8>(y_size_in_bytes).w()? };
-    quantize_q8_1(y, &mut y_q8_1, k, y_cols, dev)?;
-
-    let (kernel_name, mmq_x, mmq_y) = match dtype {
-        GgmlDType::Q4_0 => ("mul_mat_q4_0", 64, 128),
-        GgmlDType::Q4_1 => ("mul_mat_q4_1", 64, 128),
-        GgmlDType::Q5_0 => ("mul_mat_q5_0", 128, 64),
-        GgmlDType::Q5_1 => ("mul_mat_q5_1", 128, 64),
-        GgmlDType::Q8_0 => ("mul_mat_q8_0", 128, 64),
-        GgmlDType::Q2K => ("mul_mat_q2_K", 64, 128),
-        GgmlDType::Q3K => ("mul_mat_q3_K", 128, 128),
-        GgmlDType::Q4K => ("mul_mat_q4_K", 64, 128),
-        GgmlDType::Q5K => ("mul_mat_q5_K", 64, 128),
-        GgmlDType::Q6K => ("mul_mat_q6_K", 64, 64),
-        _ => crate::bail!("unsupported dtype for quantized matmul {dtype:?}"),
-    };
-    let func = dev.get_or_load_func(kernel_name, candle_kernels::QUANTIZED)?;
-    let dst = unsafe { dev.alloc::<f32>(x_rows * y_cols).w()? };
-    let cfg = cudarc::driver::LaunchConfig {
-        grid_dim: (
-            ceil_div(x_rows, mmq_y) as u32,
-            ceil_div(y_cols, mmq_x) as u32,
-            1,
-        ),
-        block_dim: (WARP_SIZE as u32, 4, 1),
-        shared_mem_bytes: 0,
-    };
-
-    let params = (
-        /* vx */ &data.inner,
-        /* vy */ &y_q8_1,
-        /* dst */ &dst,
-        /* ncols_x */ x_cols as i32,
-        /* nrows_x */ x_rows as i32,
-        /* ncols_y */ y_cols as i32,
-        /* nrows_y */ k_padded as i32,
-        /* nrows_dst */ x_rows as i32,
-    );
-    unsafe { func.launch(cfg, params) }.w()?;
-    Ok(CudaStorage::wrap_cuda_slice(dst, dev.clone()))
-}
-
-impl QCudaStorage {
-    pub fn zeros(device: &CudaDevice, el_count: usize, dtype: GgmlDType) -> Result<Self> {
-        let size_in_bytes = ceil_div(el_count, dtype.block_size()) * dtype.type_size();
-        let padded_size_in_bytes =
-            ceil_div(el_count + MATRIX_ROW_PADDING, dtype.block_size()) * dtype.type_size();
-        let inner = device.alloc_zeros::<u8>(padded_size_in_bytes).w()?;
-        Ok(QCudaStorage {
-            data: PaddedCudaSlice {
-                inner,
-                len: size_in_bytes,
-            },
-            device: device.clone(),
-            dtype,
-        })
-    }
-
-    pub fn dtype(&self) -> GgmlDType {
-        self.dtype
-    }
-
-    pub fn device(&self) -> &CudaDevice {
-        &self.device
-    }
-
-    pub fn dequantize(&self, elem_count: usize) -> Result<CudaStorage> {
-        fn deq<T: GgmlType>(buffer: &[u8], n: usize, dst: &mut [f32]) -> Result<()> {
-            let slice = unsafe { std::slice::from_raw_parts(buffer.as_ptr() as *const T, n) };
-            let vec = slice.to_vec();
-            T::to_float(&vec, dst)
-        }
-
-        let fast_kernel = matches!(
-            self.dtype,
-            GgmlDType::Q4_0
-                | GgmlDType::Q4_1
-                | GgmlDType::Q5_0
-                | GgmlDType::Q5_1
-                | GgmlDType::Q8_0
-                | GgmlDType::Q2K
-                | GgmlDType::Q3K
-                | GgmlDType::Q4K
-                | GgmlDType::Q5K
-                | GgmlDType::Q6K
-                | GgmlDType::Q8K
-        );
-        if fast_kernel {
-            return dequantize_f32(&self.data, self.dtype, elem_count, self.device());
-        }
-        // Run the dequantization on cpu.
-
-        let buffer = self
-            .device
-            .dtoh_sync_copy(&self.data.inner.slice(..self.data.len))
-            .w()?;
-        let mut out = vec![0.0; elem_count];
-        let block_len = elem_count / self.dtype.block_size();
-        match self.dtype {
-            GgmlDType::F32 => deq::<f32>(&buffer, block_len, &mut out)?,
-            GgmlDType::F16 => deq::<half::f16>(&buffer, block_len, &mut out)?,
-            GgmlDType::Q4_0 => deq::<crate::quantized::BlockQ4_0>(&buffer, block_len, &mut out)?,
-            GgmlDType::Q4_1 => deq::<crate::quantized::BlockQ4_1>(&buffer, block_len, &mut out)?,
-            GgmlDType::Q5_0 => deq::<crate::quantized::BlockQ5_0>(&buffer, block_len, &mut out)?,
-            GgmlDType::Q5_1 => deq::<crate::quantized::BlockQ5_1>(&buffer, block_len, &mut out)?,
-            GgmlDType::Q8_0 => deq::<crate::quantized::BlockQ8_0>(&buffer, block_len, &mut out)?,
-            GgmlDType::Q8_1 => deq::<crate::quantized::BlockQ8_1>(&buffer, block_len, &mut out)?,
-            GgmlDType::Q2K => deq::<crate::quantized::BlockQ2K>(&buffer, block_len, &mut out)?,
-            GgmlDType::Q3K => deq::<crate::quantized::BlockQ3K>(&buffer, block_len, &mut out)?,
-            GgmlDType::Q4K => deq::<crate::quantized::BlockQ4K>(&buffer, block_len, &mut out)?,
-            GgmlDType::Q5K => deq::<crate::quantized::BlockQ5K>(&buffer, block_len, &mut out)?,
-            GgmlDType::Q6K => deq::<crate::quantized::BlockQ6K>(&buffer, block_len, &mut out)?,
-            GgmlDType::Q8K => deq::<crate::quantized::BlockQ8K>(&buffer, block_len, &mut out)?,
-        }
-
-        self.device
-            .storage_from_cpu_storage(&crate::CpuStorage::F32(out))
-    }
-
-    pub fn dequantize_f16(&self, elem_count: usize) -> Result<CudaStorage> {
-        dequantize_f16(&self.data, self.dtype, elem_count, self.device())
-    }
-
-    pub fn quantize(&mut self, src: &CudaStorage) -> Result<()> {
-        // Run the quantization on cpu.
-        let src = match &src.slice {
-            crate::cuda_backend::CudaStorageSlice::F32(data) => {
-                self.device.dtoh_sync_copy(data).w()?
-            }
-            _ => crate::bail!("only f32 can be quantized"),
-        };
-        let src_len = src.len();
-        let src = crate::Storage::Cpu(crate::CpuStorage::F32(src));
-        let mut qcpu_storage = crate::Device::Cpu.qzeros(src_len, self.dtype)?;
-        qcpu_storage.quantize(&src)?;
-        let data = qcpu_storage.data()?;
-        let padded_len =
-            data.len() + MATRIX_ROW_PADDING * self.dtype.type_size() / self.dtype.block_size();
-        let mut inner = unsafe { self.device.alloc::<u8>(padded_len).w()? };
-        self.device
-            .htod_sync_copy_into(data.as_ref(), &mut inner.slice_mut(..data.len()))
-            .w()?;
-        self.data = PaddedCudaSlice {
-            inner,
-            len: data.len(),
-        };
-        Ok(())
-    }
-
-    pub fn storage_size_in_bytes(&self) -> usize {
-        self.data.len
-    }
-
-    pub fn fwd(
-        &self,
-        self_shape: &crate::Shape,
-        storage: &CudaStorage,
-        layout: &crate::Layout,
-    ) -> Result<(CudaStorage, crate::Shape)> {
-        let max_bm = if FORCE_DMMV.load(std::sync::atomic::Ordering::Relaxed) {
-            1
-        } else {
-            8
-        };
-        let use_vec_kernel = match layout.shape().dims() {
-            [b, m, _k] => b * m <= max_bm,
-            [b, _k] => *b <= max_bm,
-            _ => false,
-        };
-        if use_vec_kernel {
-            self.dequantize_matmul_vec(self_shape, storage, layout)
-        } else {
-            self.dequantize_matmul(self_shape, storage, layout)
-        }
-    }
-}
-
-impl QCudaStorage {
-    fn dequantize_matmul_vec(
-        &self,
-        self_shape: &crate::Shape,
-        rhs: &CudaStorage,
-        rhs_l: &crate::Layout,
-    ) -> Result<(CudaStorage, crate::Shape)> {
-        let (nrows, ncols) = self_shape.dims2()?;
-        let rhs = rhs.as_cuda_slice::<f32>()?;
-        let rhs = match rhs_l.contiguous_offsets() {
-            Some((o1, o2)) => rhs.slice(o1..o2),
-            None => Err(crate::Error::RequiresContiguous { op: "dmmv" }.bt())?,
-        };
-        let (b_size, k) = match rhs_l.shape().dims() {
-            [b, m, k] => (b * m, *k),
-            [b, k] => (*b, *k),
-            _ => crate::bail!("unexpected rhs shape in dmmv {:?}", rhs_l.shape()),
-        };
-        if ncols != k {
-            crate::bail!("mismatch on matmul dim {self_shape:?} {:?}", rhs_l.shape())
-        }
-
-        let out = if FORCE_DMMV.load(std::sync::atomic::Ordering::Relaxed) {
-            dequantize_mul_mat_vec(&self.data, &rhs, self.dtype, ncols, nrows, self.device())?
-        } else {
-            mul_mat_vec_via_q8_1(
-                &self.data,
-                &rhs,
-                self.dtype,
-                ncols,
-                nrows,
-                b_size,
-                self.device(),
-            )?
-        };
-        let mut out_shape = rhs_l.shape().dims().to_vec();
-        out_shape.pop();
-        out_shape.push(nrows);
-        Ok((out, out_shape.into()))
-    }
-
-    fn dequantize_matmul(
-        &self,
-        self_shape: &crate::Shape,
-        storage: &CudaStorage,
-        layout: &crate::Layout,
-    ) -> Result<(CudaStorage, crate::Shape)> {
-        use crate::backend::BackendStorage;
-        let (n, k) = self_shape.dims2()?;
-        let (b, m, k2) = match layout.shape().dims() {
-            &[b, m, k2] => (b, m, k2),
-            &[m, k2] => (1, m, k2),
-            s => crate::bail!("unexpected shape for input {s:?}"),
-        };
-        if k2 != k {
-            crate::bail!("mismatch on matmul dim {self_shape:?} {:?}", layout.shape())
-        }
-
-        let out = if FORCE_DMMV.load(std::sync::atomic::Ordering::Relaxed) {
-            let data_f32 = self.dequantize(n * k)?;
-            let rhs_l = crate::Layout::new((k, n).into(), vec![1, k], 0).broadcast_as((b, k, n))?;
-            storage.matmul(&data_f32, (b, m, n, k), layout, &rhs_l)?
-        } else {
-            let storage = storage.as_cuda_slice::<f32>()?;
-            let storage = match layout.contiguous_offsets() {
-                Some((o1, o2)) => storage.slice(o1..o2),
-                None => Err(crate::Error::RequiresContiguous {
-                    op: "quantized-matmul",
-                }
-                .bt())?,
-            };
-            mul_mat_via_q8_1(
-                &self.data,
-                &storage,
-                self.dtype,
-                /* x_rows */ n,
-                /* x_cols */ k,
-                /* y_rows */ k,
-                /* y_cols */ b * m,
-                self.device(),
-            )?
-        };
-        let mut out_shape = layout.shape().dims().to_vec();
-        out_shape.pop();
-        out_shape.push(n);
-        Ok((out, out_shape.into()))
-    }
-}
-
-pub fn load_quantized<T: super::GgmlType + Send + Sync + 'static>(
-    device: &CudaDevice,
-    data: &[T],
-) -> Result<super::QStorage> {
-    let data = unsafe {
-        std::slice::from_raw_parts(data.as_ptr() as *const u8, core::mem::size_of_val(data))
-    };
-    let dtype = T::DTYPE;
-    let padded_len = data.len() + MATRIX_ROW_PADDING * dtype.type_size() / dtype.block_size();
-    let mut inner = unsafe { device.alloc::<u8>(padded_len).w()? };
-    device
-        .htod_sync_copy_into(data, &mut inner.slice_mut(..data.len()))
-        .w()?;
-    Ok(QStorage::Cuda(QCudaStorage {
-        data: PaddedCudaSlice {
-            inner,
-            len: data.len(),
-        },
-        device: device.clone(),
-        dtype,
-    }))
-}
-
-#[cfg(test)]
-mod test {
-    use super::*;
-
-    #[test]
-    fn cuda_quantize_q8_1() -> Result<()> {
-        let dev = CudaDevice::new(0)?;
-        let el = 256;
-        let el_padded = pad(el, MATRIX_ROW_PADDING);
-        let y_size_in_bytes =
-            el_padded * GgmlDType::Q8_1.type_size() / GgmlDType::Q8_1.block_size();
-        let mut y_q8_1 = unsafe { dev.alloc::<u8>(y_size_in_bytes).w()? };
-        let vs: Vec<f32> = (0..el).map(|v| v as f32).collect();
-        let y = dev.htod_sync_copy(&vs).w()?;
-        quantize_q8_1(&y.slice(..), &mut y_q8_1, el, 1, &dev)?;
-        Ok(())
-    }
-
-    #[test]
-    fn cuda_mmv_q8_1() -> Result<()> {
-        let dev = CudaDevice::new(0)?;
-        let ncols = 256;
-        let vs: Vec<f32> = (0..ncols).map(|v| v as f32).collect();
-        let y = dev.htod_sync_copy(&vs).w()?;
-        let mut xs = QCudaStorage::zeros(&dev, ncols, GgmlDType::Q4_0)?;
-        xs.quantize(&CudaStorage::wrap_cuda_slice(y.clone(), dev.clone()))?;
-        let cuda_storage = mul_mat_vec_via_q8_1(
-            &xs.data,
-            &y.slice(..),
-            /* dtype */ GgmlDType::Q4_0,
-            /* ncols */ ncols,
-            /* nrows */ 1,
-            /* b_size */ 1,
-            &dev,
-        )?;
-        let vs = cuda_storage.as_cuda_slice::<f32>()?;
-        let vs = dev.dtoh_sync_copy(&vs.slice(..)).unwrap();
-        assert_eq!(vs.len(), 1);
-        // for n = 255, n.(n+1).(2n+1) / 6 = 5559680
-        // Q8 means 1/256 precision.
-        assert_eq!(vs[0], 5561664.5);
-
-        let cuda_storage = dequantize_mul_mat_vec(
-            &xs.data,
-            &y.slice(..),
-            /* dtype */ GgmlDType::Q4_0,
-            /* ncols */ ncols,
-            /* nrows */ 1,
-            &dev,
-        )?;
-        let vs = cuda_storage.as_cuda_slice::<f32>()?;
-        let vs = dev.dtoh_sync_copy(&vs.slice(..)).unwrap();
-        assert_eq!(vs.len(), 1);
-        assert_eq!(vs[0], 5561851.0);
-        Ok(())
-    }
-
-    #[test]
-    fn cuda_mm_q8_1() -> Result<()> {
-        let dev = CudaDevice::new(0)?;
-        let ncols = 256;
-        let vs: Vec<f32> = (0..ncols * 4).map(|v| v as f32 / 4.).collect();
-        let y = dev.htod_sync_copy(&vs).w()?;
-        let mut xs = QCudaStorage::zeros(&dev, ncols * 4, GgmlDType::Q4_0)?;
-        xs.quantize(&CudaStorage::wrap_cuda_slice(y.clone(), dev.clone()))?;
-        let cuda_storage = mul_mat_via_q8_1(
-            &xs.data,
-            &y.slice(..),
-            /* dtype */ GgmlDType::Q4_0,
-            /* x_rows */ 4,
-            /* x_cols */ ncols,
-            /* y_rows */ ncols,
-            /* y_cols */ 4,
-            &dev,
-        )?;
-        let vs = cuda_storage.as_cuda_slice::<f32>()?;
-        let vs = dev.dtoh_sync_copy(&vs.slice(..)).unwrap();
-
-        /*
-           x = torch.tensor([float(v) for v in range(1024)]).reshape(4, 256)
-           x @ x.t() / 16
-        tensor([[  347480.0000,   869720.0000,  1391960.0000,  1914200.0000],
-                [  869720.0000,  2440536.0000,  4011352.0000,  5582166.5000],
-                [ 1391960.0000,  4011352.0000,  6630742.0000,  9250132.0000],
-                [ 1914200.0000,  5582166.5000,  9250132.0000, 12918099.0000]])
-                */
-        assert_eq!(vs.len(), 16);
-        assert_eq!(vs[0], 347604.0);
-        assert_eq!(vs[1], 888153.06);
-        assert_eq!(vs[4], 869780.7);
-        assert_eq!(vs[5], 2483145.0);
-        assert_eq!(vs[11], 9407368.0);
-        assert_eq!(vs[14], 9470856.0);
-        assert_eq!(vs[15], 13138824.0);
-        Ok(())
-    }
-
-    // The following test used to fail under compute-sanitizer until #2526.
-    #[test]
-    fn cuda_mm_q8_1_pad() -> Result<()> {
-        let dev = CudaDevice::new(0)?;
-        let (x_rows, ncols, y_cols) = (4, 16, 2048);
-        let vs: Vec<f32> = (0..ncols * y_cols).map(|v| v as f32 / 256.).collect();
-        let y = dev.htod_sync_copy(&vs).w()?;
-        let mut xs = QCudaStorage::zeros(&dev, ncols * x_rows, GgmlDType::Q4_0)?;
-        xs.quantize(&CudaStorage::wrap_cuda_slice(y.clone(), dev.clone()))?;
-        let cuda_storage = mul_mat_via_q8_1(
-            &xs.data,
-            &y.slice(..),
-            /* dtype */ GgmlDType::Q4_0,
-            /* x_rows */ x_rows,
-            /* x_cols */ ncols,
-            /* y_rows */ ncols,
-            /* y_cols */ y_cols,
-            &dev,
-        )?;
-        let vs = cuda_storage.as_cuda_slice::<f32>()?;
-        let _vs = dev.dtoh_sync_copy(&vs.slice(..)).unwrap();
-        Ok(())
-    }
-}

candle-core/src/quantized/dummy_cuda.rs

@@ -1,54 +0,0 @@
-#![allow(unused)]
-use super::GgmlDType;
-use crate::{CudaDevice, CudaStorage, Error, Result};
-
-pub struct QCudaStorage {
-    dtype: GgmlDType,
-    device: CudaDevice,
-}
-
-impl QCudaStorage {
-    pub fn zeros(_: &CudaDevice, _: usize, _: GgmlDType) -> Result<Self> {
-        Err(Error::NotCompiledWithCudaSupport)
-    }
-
-    pub fn dtype(&self) -> GgmlDType {
-        self.dtype
-    }
-
-    pub fn device(&self) -> &CudaDevice {
-        &self.device
-    }
-
-    pub fn dequantize(&self, _elem_count: usize) -> Result<CudaStorage> {
-        Err(Error::NotCompiledWithCudaSupport)
-    }
-
-    pub fn dequantize_f16(&self, _elem_count: usize) -> Result<CudaStorage> {
-        Err(Error::NotCompiledWithCudaSupport)
-    }
-
-    pub fn quantize(&mut self, _src: &CudaStorage) -> Result<()> {
-        Err(Error::NotCompiledWithCudaSupport)
-    }
-
-    pub fn storage_size_in_bytes(&self) -> usize {
-        0
-    }
-
-    pub fn fwd(
-        &self,
-        _self_shape: &crate::Shape,
-        _storage: &CudaStorage,
-        _layout: &crate::Layout,
-    ) -> Result<(CudaStorage, crate::Shape)> {
-        Err(Error::NotCompiledWithCudaSupport)
-    }
-}
-
-pub fn load_quantized<T: super::GgmlType + Send + Sync + 'static>(
-    _device: &CudaDevice,
-    _data: &[T],
-) -> Result<super::QStorage> {
-    Err(Error::NotCompiledWithCudaSupport)
-}

candle-core/src/quantized/dummy_metal.rs

@@ -1,50 +0,0 @@
-#![allow(unused)]
-use super::GgmlDType;
-use crate::{Error, MetalDevice, MetalStorage, Result};
-
-pub struct QMetalStorage {
-    dtype: GgmlDType,
-    device: MetalDevice,
-}
-
-impl QMetalStorage {
-    pub fn zeros(_: &MetalDevice, _: usize, _: GgmlDType) -> Result<Self> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    pub fn dtype(&self) -> GgmlDType {
-        self.dtype
-    }
-
-    pub fn device(&self) -> &MetalDevice {
-        &self.device
-    }
-
-    pub fn dequantize(&self, _elem_count: usize) -> Result<MetalStorage> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    pub fn quantize(&mut self, _src: &MetalStorage) -> Result<()> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-
-    pub fn storage_size_in_bytes(&self) -> usize {
-        0
-    }
-
-    pub fn fwd(
-        &self,
-        _self_shape: &crate::Shape,
-        _storage: &MetalStorage,
-        _layout: &crate::Layout,
-    ) -> Result<(MetalStorage, crate::Shape)> {
-        Err(Error::NotCompiledWithMetalSupport)
-    }
-}
-
-pub fn load_quantized<T: super::GgmlType + Send + Sync + 'static>(
-    _device: &MetalDevice,
-    _data: &[T],
-) -> Result<super::QStorage> {
-    Err(Error::NotCompiledWithMetalSupport)
-}

candle-core/src/quantized/ggml_file.rs

@@ -1,7 +1,7 @@
 //! Support for the GGML file format.
 
-use super::{k_quants, GgmlDType, QStorage};
-use crate::{Device, Result};
+use super::{k_quants, GgmlDType};
+use crate::Result;
 use byteorder::{LittleEndian, ReadBytesExt};
 use std::collections::HashMap;
 
@@ -121,68 +121,41 @@ fn from_raw_data<T: super::GgmlType + Send + Sync + 'static>(
     raw_data: &[u8],
     size_in_bytes: usize,
     dims: Vec<usize>,
-    device: &Device,
 ) -> Result<super::QTensor> {
     let raw_data_ptr = raw_data.as_ptr();
     let n_blocks = size_in_bytes / std::mem::size_of::<T>();
     let data = unsafe { std::slice::from_raw_parts(raw_data_ptr as *const T, n_blocks) };
-    let data: QStorage = match device {
-        Device::Cpu => QStorage::Cpu(Box::new(data.to_vec())),
-        Device::Metal(metal) => super::metal::load_quantized(metal, data)?,
-        Device::Cuda(cuda) => super::cuda::load_quantized(cuda, data)?,
-    };
-    super::QTensor::new(data, dims)
+    super::QTensor::new(data.to_vec(), dims)
 }
 
-/// Creates a Tensor from a raw GGML tensor.
+/// Creates a [Tensor] from a raw GGML tensor.
 pub fn qtensor_from_ggml(
     ggml_dtype: GgmlDType,
     raw_data: &[u8],
     dims: Vec<usize>,
-    device: &Device,
 ) -> Result<super::QTensor> {
     let tensor_elems = dims.iter().product::<usize>();
-    let block_size = ggml_dtype.block_size();
-    if tensor_elems % block_size != 0 {
+    let blck_size = ggml_dtype.blck_size();
+    if tensor_elems % blck_size != 0 {
         crate::bail!(
-            "the number of elements {tensor_elems} is not divisible by the block size {block_size}"
+            "the number of elements {tensor_elems} is not divisible by the block size {blck_size}"
         )
     }
-    let size_in_bytes = tensor_elems / block_size * ggml_dtype.type_size();
+    let size_in_bytes = tensor_elems / blck_size * ggml_dtype.type_size();
 
     match ggml_dtype {
-        GgmlDType::F32 => from_raw_data::<f32>(raw_data, size_in_bytes, dims, device),
-        GgmlDType::F16 => from_raw_data::<half::f16>(raw_data, size_in_bytes, dims, device),
-        GgmlDType::Q4_0 => {
-            from_raw_data::<k_quants::BlockQ4_0>(raw_data, size_in_bytes, dims, device)
-        }
-        GgmlDType::Q4_1 => {
-            from_raw_data::<k_quants::BlockQ4_1>(raw_data, size_in_bytes, dims, device)
-        }
-        GgmlDType::Q5_0 => {
-            from_raw_data::<k_quants::BlockQ5_0>(raw_data, size_in_bytes, dims, device)
-        }
-        GgmlDType::Q5_1 => {
-            from_raw_data::<k_quants::BlockQ5_1>(raw_data, size_in_bytes, dims, device)
-        }
-        GgmlDType::Q8_0 => {
-            from_raw_data::<k_quants::BlockQ8_0>(raw_data, size_in_bytes, dims, device)
-        }
-        GgmlDType::Q2K => {
-            from_raw_data::<k_quants::BlockQ2K>(raw_data, size_in_bytes, dims, device)
-        }
-        GgmlDType::Q3K => {
-            from_raw_data::<k_quants::BlockQ3K>(raw_data, size_in_bytes, dims, device)
-        }
-        GgmlDType::Q4K => {
-            from_raw_data::<k_quants::BlockQ4K>(raw_data, size_in_bytes, dims, device)
-        }
-        GgmlDType::Q5K => {
-            from_raw_data::<k_quants::BlockQ5K>(raw_data, size_in_bytes, dims, device)
-        }
-        GgmlDType::Q6K => {
-            from_raw_data::<k_quants::BlockQ6K>(raw_data, size_in_bytes, dims, device)
-        }
+        GgmlDType::F32 => from_raw_data::<f32>(raw_data, size_in_bytes, dims),
+        GgmlDType::F16 => from_raw_data::<half::f16>(raw_data, size_in_bytes, dims),
+        GgmlDType::Q4_0 => from_raw_data::<k_quants::BlockQ4_0>(raw_data, size_in_bytes, dims),
+        GgmlDType::Q4_1 => from_raw_data::<k_quants::BlockQ4_1>(raw_data, size_in_bytes, dims),
+        GgmlDType::Q5_0 => from_raw_data::<k_quants::BlockQ5_0>(raw_data, size_in_bytes, dims),
+        GgmlDType::Q5_1 => from_raw_data::<k_quants::BlockQ5_1>(raw_data, size_in_bytes, dims),
+        GgmlDType::Q8_0 => from_raw_data::<k_quants::BlockQ8_0>(raw_data, size_in_bytes, dims),
+        GgmlDType::Q2K => from_raw_data::<k_quants::BlockQ2K>(raw_data, size_in_bytes, dims),
+        GgmlDType::Q3K => from_raw_data::<k_quants::BlockQ3K>(raw_data, size_in_bytes, dims),
+        GgmlDType::Q4K => from_raw_data::<k_quants::BlockQ4K>(raw_data, size_in_bytes, dims),
+        GgmlDType::Q5K => from_raw_data::<k_quants::BlockQ5K>(raw_data, size_in_bytes, dims),
+        GgmlDType::Q6K => from_raw_data::<k_quants::BlockQ6K>(raw_data, size_in_bytes, dims),
         _ => crate::bail!("quantized type {ggml_dtype:?} is not supported yet"),
     }
 }
@@ -190,7 +163,6 @@ pub fn qtensor_from_ggml(
 fn read_one_tensor<R: std::io::Seek + std::io::Read>(
     reader: &mut R,
     magic: VersionedMagic,
-    device: &Device,
 ) -> Result<(String, super::QTensor)> {
     let n_dims = reader.read_u32::<LittleEndian>()?;
     let name_len = reader.read_u32::<LittleEndian>()?;
@@ -211,11 +183,11 @@ fn read_one_tensor<R: std::io::Seek + std::io::Read>(
     }
     let dims = dims.iter().map(|&u| u as usize).collect::<Vec<_>>();
     let tensor_elems = dims.iter().product::<usize>();
-    let size_in_bytes = tensor_elems * ggml_dtype.type_size() / ggml_dtype.block_size();
+    let size_in_bytes = tensor_elems * ggml_dtype.type_size() / ggml_dtype.blck_size();
     // TODO: Mmap version to avoid copying the data around?
     let mut raw_data = vec![0u8; size_in_bytes];
     reader.read_exact(&mut raw_data)?;
-    match qtensor_from_ggml(ggml_dtype, &raw_data, dims, device) {
+    match qtensor_from_ggml(ggml_dtype, &raw_data, dims) {
         Ok(tensor) => Ok((name, tensor)),
         Err(e) => crate::bail!("Error creating tensor {name}: {e}"),
     }
@@ -226,14 +198,10 @@ pub struct Content {
     pub hparams: HParams,
     pub vocab: Vocab,
     pub tensors: HashMap<String, super::QTensor>,
-    pub device: Device,
 }
 
 impl Content {
-    pub fn read<R: std::io::Seek + std::io::Read>(
-        reader: &mut R,
-        device: &Device,
-    ) -> Result<Content> {
+    pub fn read<R: std::io::Seek + std::io::Read>(reader: &mut R) -> Result<Content> {
         // https://github.com/ggerganov/llama.cpp/blob/468ea24fb4633a0d681f7ac84089566c1c6190cb/llama.cpp#L505
         let last_position = reader.seek(std::io::SeekFrom::End(0))?;
         reader.seek(std::io::SeekFrom::Start(0))?;
@@ -243,16 +211,14 @@ impl Content {
         let mut tensors = HashMap::new();
 
         while reader.stream_position()? != last_position {
-            let (name, tensor) = read_one_tensor(reader, magic, device)?;
+            let (name, tensor) = read_one_tensor(reader, magic)?;
             tensors.insert(name, tensor);
         }
-        let device = device.clone();
         Ok(Self {
             magic,
             hparams,
             vocab,
             tensors,
-            device,
         })
     }
 

candle-core/src/quantized/gguf_file.rs

@@ -1,8 +1,9 @@
-//! Support for the [GGUF file format](https://github.com/philpax/ggml/blob/gguf-spec/docs/gguf.md).
+//! Support for the GGUF file format.
 //!
+//! Spec: https://github.com/philpax/ggml/blob/gguf-spec/docs/gguf.md
 
 use super::{GgmlDType, QTensor};
-use crate::{Context, Device, Result};
+use crate::Result;
 use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
 use std::collections::HashMap;
 
@@ -28,7 +29,6 @@ impl TryFrom<u32> for Magic {
 pub enum VersionedMagic {
     GgufV1,
     GgufV2,
-    GgufV3,
 }
 
 impl VersionedMagic {
@@ -39,8 +39,7 @@ impl VersionedMagic {
         let versioned_magic = match (magic, version) {
             (Magic::Gguf, 1) => Self::GgufV1,
             (Magic::Gguf, 2) => Self::GgufV2,
-            (Magic::Gguf, 3) => Self::GgufV3,
-            _ => crate::bail!("gguf: unsupported magic/version {magic:?}/{version}"),
+            _ => crate::bail!("ggml: unsupported magic/version {magic:?}/{version}"),
         };
         Ok(versioned_magic)
     }
@@ -58,25 +57,19 @@ impl TensorInfo {
         &self,
         reader: &mut R,
         tensor_data_offset: u64,
-        device: &Device,
     ) -> Result<QTensor> {
         let tensor_elems = self.shape.elem_count();
-        let block_size = self.ggml_dtype.block_size();
-        if tensor_elems % block_size != 0 {
+        let blck_size = self.ggml_dtype.blck_size();
+        if tensor_elems % blck_size != 0 {
             crate::bail!(
-            "the number of elements {tensor_elems} is not divisible by the block size {block_size}"
+            "the number of elements {tensor_elems} is not divisible by the block size {blck_size}"
         )
         }
-        let size_in_bytes = tensor_elems / block_size * self.ggml_dtype.type_size();
+        let size_in_bytes = tensor_elems / blck_size * self.ggml_dtype.type_size();
         let mut raw_data = vec![0u8; size_in_bytes];
         reader.seek(std::io::SeekFrom::Start(tensor_data_offset + self.offset))?;
         reader.read_exact(&mut raw_data)?;
-        super::ggml_file::qtensor_from_ggml(
-            self.ggml_dtype,
-            &raw_data,
-            self.shape.dims().to_vec(),
-            device,
-        )
+        super::ggml_file::qtensor_from_ggml(self.ggml_dtype, &raw_data, self.shape.dims().to_vec())
     }
 }
 
@@ -91,9 +84,7 @@ pub struct Content {
 fn read_string<R: std::io::Read>(reader: &mut R, magic: &VersionedMagic) -> Result<String> {
     let len = match magic {
         VersionedMagic::GgufV1 => reader.read_u32::<LittleEndian>()? as usize,
-        VersionedMagic::GgufV2 | VersionedMagic::GgufV3 => {
-            reader.read_u64::<LittleEndian>()? as usize
-        }
+        VersionedMagic::GgufV2 => reader.read_u64::<LittleEndian>()? as usize,
     };
     let mut v = vec![0u8; len];
     reader.read_exact(&mut v)?;
@@ -134,6 +125,7 @@ pub enum ValueType {
     // The value is a UTF-8 non-null-terminated string, with length prepended.
     String,
     // The value is an array of other values, with the length and type prepended.
+    ///
     // Arrays can be nested, and the length of the array is the number of elements in the array, not the number of bytes.
     Array,
 }
@@ -216,16 +208,10 @@ impl Value {
         }
     }
 
-    /// This will also automatically upcast any integral types which will not truncate.
     pub fn to_u64(&self) -> Result<u64> {
         match self {
             Self::U64(v) => Ok(*v),
-            // Autoupcast cases here
-            Self::U8(v) => Ok(*v as u64),
-            Self::U16(v) => Ok(*v as u64),
-            Self::U32(v) => Ok(*v as u64),
-            Self::Bool(v) => Ok(*v as u64),
-            v => crate::bail!("not a u64 or upcastable to u64 {v:?}"),
+            v => crate::bail!("not a u64 {v:?}"),
         }
     }
 
@@ -298,9 +284,7 @@ impl Value {
                 let value_type = ValueType::from_u32(value_type)?;
                 let len = match magic {
                     VersionedMagic::GgufV1 => reader.read_u32::<LittleEndian>()? as usize,
-                    VersionedMagic::GgufV2 | VersionedMagic::GgufV3 => {
-                        reader.read_u64::<LittleEndian>()? as usize
-                    }
+                    VersionedMagic::GgufV2 => reader.read_u64::<LittleEndian>()? as usize,
                 };
                 let mut vs = Vec::with_capacity(len);
                 for _ in 0..len {
@@ -338,7 +322,7 @@ impl Value {
                     if value_type.len() != 1 {
                         crate::bail!("multiple value-types in the same array {value_type:?}")
                     }
-                    value_type.into_iter().next().context("empty value_type")?
+                    value_type.into_iter().next().unwrap()
                 };
                 w.write_u32::<LittleEndian>(value_type.to_u32())?;
                 w.write_u64::<LittleEndian>(v.len() as u64)?;
@@ -397,15 +381,11 @@ impl Content {
 
         let tensor_count = match magic {
             VersionedMagic::GgufV1 => reader.read_u32::<LittleEndian>()? as usize,
-            VersionedMagic::GgufV2 | VersionedMagic::GgufV3 => {
-                reader.read_u64::<LittleEndian>()? as usize
-            }
+            VersionedMagic::GgufV2 => reader.read_u64::<LittleEndian>()? as usize,
         };
         let metadata_kv_count = match magic {
             VersionedMagic::GgufV1 => reader.read_u32::<LittleEndian>()? as usize,
-            VersionedMagic::GgufV2 | VersionedMagic::GgufV3 => {
-                reader.read_u64::<LittleEndian>()? as usize
-            }
+            VersionedMagic::GgufV2 => reader.read_u64::<LittleEndian>()? as usize,
         };
 
         let mut metadata = HashMap::new();
@@ -427,7 +407,7 @@ impl Content {
                     reader.read_u32_into::<LittleEndian>(&mut dimensions)?;
                     dimensions.into_iter().map(|c| c as usize).collect()
                 }
-                VersionedMagic::GgufV2 | VersionedMagic::GgufV3 => {
+                VersionedMagic::GgufV2 => {
                     let mut dimensions = vec![0; n_dimensions as usize];
                     reader.read_u64_into::<LittleEndian>(&mut dimensions)?;
                     dimensions.into_iter().map(|c| c as usize).collect()
@@ -457,7 +437,7 @@ impl Content {
             Some(Value::I32(v)) if *v >= 0 => *v as u64,
             _ => DEFAULT_ALIGNMENT,
         };
-        let tensor_data_offset = position.div_ceil(alignment) * alignment;
+        let tensor_data_offset = (position + alignment - 1) / alignment * alignment;
         Ok(Self {
             magic,
             metadata,
@@ -470,13 +450,12 @@ impl Content {
         &self,
         reader: &mut R,
         name: &str,
-        device: &Device,
     ) -> Result<QTensor> {
         let tensor_info = match self.tensor_infos.get(name) {
             Some(tensor_info) => tensor_info,
-            None => crate::bail!("cannot find tensor info for {name}"),
+            None => crate::bail!("cannot find tensor-infor for {name}"),
         };
-        tensor_info.read(reader, self.tensor_data_offset, device)
+        tensor_info.read(reader, self.tensor_data_offset)
     }
 }
 
@@ -528,9 +507,10 @@ pub fn write<W: std::io::Seek + std::io::Write>(
                 "internal error, unexpected current position {tensor_start_pos} {offset} {pos}"
             )
         }
-        let data = tensor.data()?;
-        let size_in_bytes = data.len();
-        w.write_all(&data)?;
+        let data_ptr = tensor.as_ptr();
+        let size_in_bytes = tensor.storage_size_in_bytes();
+        let data = unsafe { std::slice::from_raw_parts(data_ptr, size_in_bytes) };
+        w.write_all(data)?;
         let padding = 31 - (31 + size_in_bytes) % 32;
         w.write_all(&vec![0u8; padding])?;
     }

candle-core/src/quantized/k_quants.rs

@@ -236,9 +236,14 @@ impl GgmlType for BlockQ4_0 {
 
     fn vec_dot_unopt(n: usize, xs: &[Self], ys: &[Self::VecDotType]) -> Result<f32> {
         let qk = QK8_0;
+        let nb = n / qk;
         if n % QK8_0 != 0 {
             crate::bail!("vec_dot_q4_0_q8_0: {n} is not divisible by {qk}")
         }
+        if nb % 2 != 0 {
+            crate::bail!("vec_dot_q4_0_q8_0: {nb} is not even")
+        }
+
         // Generic implementation.
         let mut sumf = 0f32;
         for (xs, ys) in xs.iter().zip(ys.iter()) {
@@ -1545,13 +1550,13 @@ impl GgmlType for BlockQ5K {
                 let d2 = d * sc as f32;
                 let m2 = min * m as f32;
                 for (ql, qh) in ql.iter().zip(qh) {
-                    let to_add = if qh & u1 != 0 { 16f32 } else { 0f32 };
-                    y[ys_index] = d1 * ((ql & 0xF) as f32 + to_add) - m1;
+                    let to_add = if qh & u1 != 0 { 16 } else { 1 };
+                    y[ys_index] = d1 * ((ql & 0xF) + to_add) as f32 - m1;
                     ys_index += 1;
                 }
                 for (ql, qh) in ql.iter().zip(qh) {
-                    let to_add = if qh & u2 != 0 { 16f32 } else { 0f32 };
-                    y[ys_index] = d2 * ((ql >> 4) as f32 + to_add) - m2;
+                    let to_add = if qh & u2 != 0 { 16 } else { 1 };
+                    y[ys_index] = d2 * ((ql >> 4) + to_add) as f32 - m2;
                     ys_index += 1;
                 }
                 is += 2;
@@ -1850,8 +1855,8 @@ pub fn matmul<T: GgmlType>(
         crate::bail!("unexpected lhs length {} {mkn:?}", lhs.len());
     }
 
-    let k_in_lhs_blocks = k.div_ceil(T::BLCK_SIZE);
-    let k_in_rhs_blocks = k.div_ceil(T::VecDotType::BLCK_SIZE);
+    let k_in_lhs_blocks = (k + T::BLCK_SIZE - 1) / T::BLCK_SIZE;
+    let k_in_rhs_blocks = (k + T::VecDotType::BLCK_SIZE - 1) / T::VecDotType::BLCK_SIZE;
     // TODO: Do not make this copy if the DotType is f32.
     // TODO: Pre-allocate this.
     let mut lhs_b = vec![T::VecDotType::zeros(); m * k_in_lhs_blocks];

candle-core/src/quantized/metal.rs

@@ -1,230 +0,0 @@
-use super::{GgmlDType, QStorage};
-use crate::backend::BackendStorage;
-use crate::{DType, MetalDevice, MetalStorage, Result, Shape};
-use metal::Buffer;
-use std::sync::Arc;
-
-pub struct QMetalStorage {
-    dtype: GgmlDType,
-    device: MetalDevice,
-    buffer: Arc<Buffer>,
-}
-
-impl QMetalStorage {
-    pub fn zeros(device: &MetalDevice, elem_count: usize, dtype: GgmlDType) -> Result<Self> {
-        let size = elem_count * dtype.type_size() / dtype.block_size();
-        let buffer = device.allocate_zeros(size)?;
-        Ok(Self {
-            buffer,
-            device: device.clone(),
-            dtype,
-        })
-    }
-
-    pub fn dtype(&self) -> GgmlDType {
-        self.dtype
-    }
-
-    pub fn device(&self) -> &MetalDevice {
-        &self.device
-    }
-
-    pub fn buffer(&self) -> &Buffer {
-        &self.buffer
-    }
-
-    pub fn dequantize(&self, elem_count: usize) -> Result<MetalStorage> {
-        use crate::quantized::k_quants::GgmlType;
-
-        let buffer = self.device.new_buffer_managed(self.buffer.length())?;
-        let command_buffer = self.device.command_buffer()?;
-        command_buffer.set_label("to_cpu");
-        let blit = command_buffer.new_blit_command_encoder();
-        blit.set_label("blit_to_cpu");
-        blit.copy_from_buffer(&self.buffer, 0, &buffer, 0, self.buffer.length());
-        blit.end_encoding();
-        self.device.wait_until_completed()?;
-        let mut out = vec![0.0; elem_count];
-        let block_len = elem_count / self.dtype.block_size();
-        match self.dtype {
-            GgmlDType::F32 => {
-                let vec: Vec<f32> = read_to_vec(&buffer, block_len);
-                f32::to_float(&vec, &mut out)?;
-            }
-            GgmlDType::F16 => {
-                let vec: Vec<half::f16> = read_to_vec(&buffer, block_len);
-                half::f16::to_float(&vec, &mut out)?;
-            }
-            GgmlDType::Q4_0 => {
-                let vec: Vec<crate::quantized::BlockQ4_0> = read_to_vec(&buffer, block_len);
-                crate::quantized::BlockQ4_0::to_float(&vec, &mut out)?;
-            }
-            GgmlDType::Q4_1 => {
-                let vec: Vec<crate::quantized::BlockQ4_1> = read_to_vec(&buffer, block_len);
-                crate::quantized::BlockQ4_1::to_float(&vec, &mut out)?;
-            }
-            GgmlDType::Q5_0 => {
-                let vec: Vec<crate::quantized::BlockQ5_0> = read_to_vec(&buffer, block_len);
-                crate::quantized::BlockQ5_0::to_float(&vec, &mut out)?;
-            }
-            GgmlDType::Q5_1 => {
-                let vec: Vec<crate::quantized::BlockQ5_1> = read_to_vec(&buffer, block_len);
-                crate::quantized::BlockQ5_1::to_float(&vec, &mut out)?;
-            }
-            GgmlDType::Q8_0 => {
-                let vec: Vec<crate::quantized::BlockQ8_0> = read_to_vec(&buffer, block_len);
-                crate::quantized::BlockQ8_0::to_float(&vec, &mut out)?;
-            }
-            GgmlDType::Q8_1 => {
-                let vec: Vec<crate::quantized::BlockQ8_1> = read_to_vec(&buffer, block_len);
-                crate::quantized::BlockQ8_1::to_float(&vec, &mut out)?;
-            }
-            GgmlDType::Q2K => {
-                let vec: Vec<crate::quantized::BlockQ2K> = read_to_vec(&buffer, block_len);
-                crate::quantized::BlockQ2K::to_float(&vec, &mut out)?;
-            }
-            GgmlDType::Q3K => {
-                let vec: Vec<crate::quantized::BlockQ3K> = read_to_vec(&buffer, block_len);
-                crate::quantized::BlockQ3K::to_float(&vec, &mut out)?;
-            }
-            GgmlDType::Q4K => {
-                let vec: Vec<crate::quantized::BlockQ4K> = read_to_vec(&buffer, block_len);
-                crate::quantized::BlockQ4K::to_float(&vec, &mut out)?;
-            }
-            GgmlDType::Q5K => {
-                let vec: Vec<crate::quantized::BlockQ5K> = read_to_vec(&buffer, block_len);
-                crate::quantized::BlockQ5K::to_float(&vec, &mut out)?;
-            }
-            GgmlDType::Q6K => {
-                let vec: Vec<crate::quantized::BlockQ6K> = read_to_vec(&buffer, block_len);
-                crate::quantized::BlockQ6K::to_float(&vec, &mut out)?;
-            }
-            GgmlDType::Q8K => {
-                let vec: Vec<crate::quantized::BlockQ8K> = read_to_vec(&buffer, block_len);
-                crate::quantized::BlockQ8K::to_float(&vec, &mut out)?;
-            }
-        }
-
-        let buffer = self.device.new_buffer_with_data(&out)?;
-        Ok(MetalStorage::new(
-            buffer,
-            self.device.clone(),
-            elem_count,
-            DType::F32,
-        ))
-    }
-
-    pub fn quantize(&mut self, src: &MetalStorage) -> Result<()> {
-        // Quantization only happens on CPU for now.
-        let src = src.to_cpu::<f32>()?;
-        let elem_count = src.len();
-        let src = crate::Storage::Cpu(crate::CpuStorage::F32(src));
-        let mut qcpu_storage = crate::Device::Cpu.qzeros(elem_count, self.dtype)?;
-        qcpu_storage.quantize(&src)?;
-        let buffer = self.device.new_buffer_with_data(&qcpu_storage.data()?)?;
-        self.buffer = buffer;
-        Ok(())
-    }
-
-    pub fn storage_size_in_bytes(&self) -> usize {
-        self.buffer.length() as usize
-    }
-
-    pub fn fwd(
-        &self,
-        self_shape: &Shape,
-        storage: &MetalStorage,
-        layout: &crate::Layout,
-    ) -> Result<(MetalStorage, Shape)> {
-        use crate::MetalError;
-
-        if !layout.is_contiguous() {
-            crate::bail!("input tensor is not contiguous {layout:?}")
-        }
-        let src_shape = layout.shape();
-        // self is transposed so n is first then k.
-        if src_shape.rank() < 2 {
-            crate::bail!("input tensor has only one dimension {layout:?}")
-        }
-        let (n, k) = self_shape.dims2()?;
-        let mut dst_shape = src_shape.dims().to_vec();
-
-        // We always use a single batch dimension and stack all the tensors in the batch on the
-        // second dimension as the implementation in candle-metal-kernels doesn't handle batch
-        // properly.
-        let m = match dst_shape.len() {
-            3 => dst_shape[0] * dst_shape[1],
-            2 => dst_shape[0],
-            n => crate::bail!("Invalid rank {n} for quantized matmul metal"),
-        };
-        let last_k = dst_shape.pop().unwrap();
-        if last_k != k {
-            crate::bail!("input tensor {layout:?} incompatible with {:?}", self_shape)
-        }
-        dst_shape.push(n);
-        let dst_shape = Shape::from(dst_shape);
-        let device = storage.device().clone();
-        let dst = device.new_buffer(dst_shape.elem_count(), DType::F32, "qmatmul")?;
-        let command_buffer = device.command_buffer()?;
-        // In some cases it would be better to use the mm variant, though it has its drawbacks
-        // around memory alignemnt.
-        for batch_id in 0..m {
-            candle_metal_kernels::call_quantized_matmul_mv_t(
-                device.device(),
-                &command_buffer,
-                device.kernels(),
-                self.dtype.into(),
-                (1, 1, n, k),
-                storage.buffer(),
-                (layout.start_offset() + batch_id * k) * storage.dtype().size_in_bytes(),
-                &self.buffer,
-                batch_id * n * DType::F32.size_in_bytes(),
-                &dst,
-            )
-            .map_err(MetalError::from)?;
-        }
-        let dst_storage = crate::MetalStorage::new(dst, device, dst_shape.elem_count(), DType::F32);
-        Ok((dst_storage, dst_shape))
-    }
-}
-
-pub fn load_quantized<T: super::GgmlType + Send + Sync + 'static>(
-    device: &MetalDevice,
-    data: &[T],
-) -> Result<QStorage> {
-    let buffer = device.new_buffer_with_data(data)?;
-    let device = device.clone();
-    Ok(QStorage::Metal(QMetalStorage {
-        dtype: T::DTYPE,
-        device,
-        buffer,
-    }))
-}
-
-fn read_to_vec<T: Clone>(buffer: &Buffer, n: usize) -> Vec<T> {
-    let ptr = buffer.contents() as *const T;
-    assert!(!ptr.is_null());
-    let slice = unsafe { std::slice::from_raw_parts(ptr, n) };
-    slice.to_vec()
-}
-
-impl From<GgmlDType> for candle_metal_kernels::GgmlDType {
-    fn from(value: GgmlDType) -> Self {
-        match value {
-            GgmlDType::Q4_0 => candle_metal_kernels::GgmlDType::Q4_0,
-            GgmlDType::Q4_1 => candle_metal_kernels::GgmlDType::Q4_1,
-            GgmlDType::Q5_0 => candle_metal_kernels::GgmlDType::Q5_0,
-            GgmlDType::Q5_1 => candle_metal_kernels::GgmlDType::Q5_1,
-            GgmlDType::Q8_0 => candle_metal_kernels::GgmlDType::Q8_0,
-            GgmlDType::Q8_1 => candle_metal_kernels::GgmlDType::Q8_1,
-            GgmlDType::Q2K => candle_metal_kernels::GgmlDType::Q2K,
-            GgmlDType::Q3K => candle_metal_kernels::GgmlDType::Q3K,
-            GgmlDType::Q4K => candle_metal_kernels::GgmlDType::Q4K,
-            GgmlDType::Q5K => candle_metal_kernels::GgmlDType::Q5K,
-            GgmlDType::Q6K => candle_metal_kernels::GgmlDType::Q6K,
-            GgmlDType::Q8K => candle_metal_kernels::GgmlDType::Q8K,
-            GgmlDType::F16 => candle_metal_kernels::GgmlDType::F16,
-            GgmlDType::F32 => candle_metal_kernels::GgmlDType::F32,
-        }
-    }
-}

candle-core/src/quantized/mod.rs

@@ -1,135 +1,23 @@
-//! Code for GGML and GGUF files
-use crate::{Context, CpuStorage, DType, Device, Result, Shape, Storage, Tensor};
-use k_quants::*;
-use std::borrow::Cow;
+use crate::{Device, Result, Shape, Tensor};
 
 #[cfg(target_feature = "avx")]
 pub mod avx;
-mod dummy_cuda;
-mod dummy_metal;
 pub mod ggml_file;
 pub mod gguf_file;
 pub mod k_quants;
-#[cfg(feature = "metal")]
-pub mod metal;
-#[cfg(not(feature = "metal"))]
-mod metal {
-    pub use super::dummy_metal::*;
-}
-#[cfg(feature = "cuda")]
-pub mod cuda;
-#[cfg(not(feature = "cuda"))]
-mod cuda {
-    pub use super::dummy_cuda::*;
-}
-
 #[cfg(target_feature = "neon")]
 pub mod neon;
 #[cfg(target_feature = "simd128")]
 pub mod simd128;
 pub mod utils;
-use half::f16;
 
 pub use k_quants::GgmlType;
 
 pub struct QTensor {
-    storage: QStorage,
+    data: Box<dyn QuantizedType>,
     shape: Shape,
 }
 
-impl Device {
-    fn qzeros(&self, elem_count: usize, dtype: GgmlDType) -> Result<QStorage> {
-        match self {
-            Device::Cpu => {
-                let storage = dtype.cpu_zeros(elem_count);
-                Ok(QStorage::Cpu(storage))
-            }
-            Device::Metal(metal) => {
-                let storage = metal::QMetalStorage::zeros(metal, elem_count, dtype)?;
-                Ok(QStorage::Metal(storage))
-            }
-            Device::Cuda(cuda) => {
-                let storage = cuda::QCudaStorage::zeros(cuda, elem_count, dtype)?;
-                Ok(QStorage::Cuda(storage))
-            }
-        }
-    }
-}
-
-pub enum QStorage {
-    Cpu(Box<dyn QuantizedType>),
-    Metal(metal::QMetalStorage),
-    Cuda(cuda::QCudaStorage),
-}
-
-impl QStorage {
-    fn block_size(&self) -> usize {
-        match self {
-            QStorage::Cpu(storage) => storage.block_size(),
-            QStorage::Metal(storage) => storage.dtype().block_size(),
-            QStorage::Cuda(storage) => storage.dtype().block_size(),
-        }
-    }
-
-    fn dtype(&self) -> GgmlDType {
-        match self {
-            QStorage::Cpu(storage) => storage.dtype(),
-            QStorage::Metal(storage) => storage.dtype(),
-            QStorage::Cuda(storage) => storage.dtype(),
-        }
-    }
-
-    fn device(&self) -> Device {
-        match self {
-            QStorage::Cpu(_storage) => Device::Cpu,
-            QStorage::Metal(storage) => Device::Metal(storage.device().clone()),
-            QStorage::Cuda(storage) => Device::Cuda(storage.device().clone()),
-        }
-    }
-
-    fn size_in_bytes(&self) -> usize {
-        match self {
-            QStorage::Cpu(storage) => storage.storage_size_in_bytes(),
-            QStorage::Metal(storage) => storage.storage_size_in_bytes(),
-            QStorage::Cuda(storage) => storage.storage_size_in_bytes(),
-        }
-    }
-
-    fn quantize(&mut self, src: &Storage) -> Result<()> {
-        match (self, src) {
-            (QStorage::Cpu(storage), Storage::Cpu(src)) => {
-                storage.from_float(src.as_slice::<f32>()?)?;
-            }
-            (QStorage::Metal(storage), Storage::Metal(src)) => storage.quantize(src)?,
-            (QStorage::Cuda(storage), Storage::Cuda(src)) => storage.quantize(src)?,
-            _ => crate::bail!("Invalid dequantize storage locations do not match"),
-        }
-        Ok(())
-    }
-
-    fn dequantize(&self, elem_count: usize) -> Result<Storage> {
-        match self {
-            QStorage::Cpu(storage) => Ok(Storage::Cpu(storage.dequantize(elem_count)?)),
-            QStorage::Metal(storage) => Ok(Storage::Metal(storage.dequantize(elem_count)?)),
-            QStorage::Cuda(storage) => Ok(Storage::Cuda(storage.dequantize(elem_count)?)),
-        }
-    }
-
-    fn data(&self) -> Result<Cow<[u8]>> {
-        match self {
-            QStorage::Cpu(storage) => {
-                let data_ptr = storage.as_ptr();
-                let size_in_bytes = storage.storage_size_in_bytes();
-                let data = unsafe { std::slice::from_raw_parts(data_ptr, size_in_bytes) };
-                Ok(Cow::from(data))
-            }
-            QStorage::Metal(_) | QStorage::Cuda(_) => {
-                crate::bail!("not implemented");
-            }
-        }
-    }
-}
-
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub enum GgmlDType {
     F32,
@@ -189,25 +77,6 @@ impl GgmlDType {
         }
     }
 
-    /// The block dtype
-    pub fn cpu_zeros(&self, elem_count: usize) -> Box<dyn QuantizedType> {
-        match self {
-            Self::F32 => Box::new(vec![f32::zeros(); elem_count]),
-            Self::F16 => Box::new(vec![f16::zeros(); elem_count]),
-            Self::Q4_0 => Box::new(vec![BlockQ4_0::zeros(); elem_count / BlockQ4_0::BLCK_SIZE]),
-            Self::Q4_1 => Box::new(vec![BlockQ4_1::zeros(); elem_count / BlockQ4_1::BLCK_SIZE]),
-            Self::Q5_0 => Box::new(vec![BlockQ5_0::zeros(); elem_count / BlockQ5_0::BLCK_SIZE]),
-            Self::Q5_1 => Box::new(vec![BlockQ5_1::zeros(); elem_count / BlockQ5_1::BLCK_SIZE]),
-            Self::Q8_0 => Box::new(vec![BlockQ8_0::zeros(); elem_count / BlockQ8_0::BLCK_SIZE]),
-            Self::Q8_1 => Box::new(vec![BlockQ8_1::zeros(); elem_count / BlockQ8_1::BLCK_SIZE]),
-            Self::Q2K => Box::new(vec![BlockQ2K::zeros(); elem_count / BlockQ2K::BLCK_SIZE]),
-            Self::Q3K => Box::new(vec![BlockQ3K::zeros(); elem_count / BlockQ3K::BLCK_SIZE]),
-            Self::Q4K => Box::new(vec![BlockQ4K::zeros(); elem_count / BlockQ4K::BLCK_SIZE]),
-            Self::Q5K => Box::new(vec![BlockQ5K::zeros(); elem_count / BlockQ5K::BLCK_SIZE]),
-            Self::Q6K => Box::new(vec![BlockQ6K::zeros(); elem_count / BlockQ6K::BLCK_SIZE]),
-            Self::Q8K => Box::new(vec![BlockQ8K::zeros(); elem_count / BlockQ8K::BLCK_SIZE]),
-        }
-    }
     /// The type size for blocks in bytes.
     pub fn type_size(&self) -> usize {
         use k_quants::*;
@@ -231,7 +100,7 @@ impl GgmlDType {
     }
 
     /// The block size, i.e. the number of elements stored in each block.
-    pub fn block_size(&self) -> usize {
+    pub fn blck_size(&self) -> usize {
         match self {
             Self::F32 => 1,
             Self::F16 => 1,
@@ -250,13 +119,9 @@ impl GgmlDType {
 pub trait QuantizedType: Send + Sync {
     fn dtype(&self) -> GgmlDType;
     fn matmul_t(&self, mkn: (usize, usize, usize), lhs: &[f32], dst: &mut [f32]) -> Result<()>;
-    fn dequantize(&self, elem_count: usize) -> Result<CpuStorage>;
+    fn to_float(&self, ys: &mut [f32]) -> Result<()>;
     fn storage_size_in_bytes(&self) -> usize;
     fn as_ptr(&self) -> *const u8;
-    fn block_size(&self) -> usize;
-    #[allow(clippy::wrong_self_convention)]
-    fn from_float(&mut self, xs: &[f32]) -> Result<()>;
-    fn size(&self) -> usize;
 }
 
 impl<T: k_quants::GgmlType + Send + Sync> QuantizedType for Vec<T> {
@@ -264,26 +129,12 @@ impl<T: k_quants::GgmlType + Send + Sync> QuantizedType for Vec<T> {
         k_quants::matmul(mkn, lhs, self.as_slice(), dst)
     }
 
-    fn size(&self) -> usize {
-        self.len() * core::mem::size_of::<T>()
-    }
-
-    fn from_float(&mut self, xs: &[f32]) -> Result<()> {
-        T::from_float(xs, self)
-    }
-
     fn dtype(&self) -> GgmlDType {
         T::DTYPE
     }
 
-    fn block_size(&self) -> usize {
-        T::BLCK_SIZE
-    }
-
-    fn dequantize(&self, elem_count: usize) -> Result<CpuStorage> {
-        let mut ys = vec![0.0f32; elem_count];
-        T::to_float(self.as_slice(), &mut ys)?;
-        Ok(CpuStorage::F32(ys))
+    fn to_float(&self, ys: &mut [f32]) -> Result<()> {
+        T::to_float(self.as_slice(), ys)
     }
 
     fn storage_size_in_bytes(&self) -> usize {
@@ -301,53 +152,56 @@ impl std::fmt::Debug for QTensor {
     }
 }
 
-fn check_shape(shape: &Shape, block_size: usize) -> Result<()> {
+fn check_shape<T: k_quants::GgmlType>(shape: &Shape) -> Result<()> {
     let dims = shape.dims();
     if dims.is_empty() {
         crate::bail!("scalar tensor cannot be quantized {shape:?}")
     }
-    if dims[dims.len() - 1] % block_size != 0 {
+    if dims[dims.len() - 1] % T::BLCK_SIZE != 0 {
         crate::bail!(
             "quantized tensor must have their last dim divisible by block size {shape:?} {}",
-            block_size
+            T::BLCK_SIZE
         )
     }
     Ok(())
 }
 
 impl QTensor {
-    pub fn new<S: Into<Shape>>(storage: QStorage, shape: S) -> Result<Self> {
+    pub fn new<S: Into<Shape>, T: k_quants::GgmlType + Send + Sync + 'static>(
+        data: Vec<T>,
+        shape: S,
+    ) -> Result<Self> {
         let shape = shape.into();
-        check_shape(&shape, storage.block_size())?;
-        Ok(Self { storage, shape })
+        check_shape::<T>(&shape)?;
+        Ok(Self {
+            data: Box::new(data),
+            shape,
+        })
     }
 
-    pub fn quantize(src: &Tensor, dtype: GgmlDType) -> Result<Self> {
+    pub fn quantize<T: k_quants::GgmlType + Send + Sync + 'static>(src: &Tensor) -> Result<Self> {
         let shape = src.shape();
-        let block_size = dtype.block_size();
-        check_shape(shape, block_size)?;
-        let src = src.to_dtype(crate::DType::F32)?.flatten_all()?;
-        let elem_count = shape.elem_count();
-        if elem_count % block_size != 0 {
+        check_shape::<T>(shape)?;
+        let src = src
+            .to_dtype(crate::DType::F32)?
+            .flatten_all()?
+            .to_vec1::<f32>()?;
+        if src.len() % T::BLCK_SIZE != 0 {
             crate::bail!(
                 "tensor size ({shape:?}) is not divisible by block size {}",
-                block_size
+                T::BLCK_SIZE
             )
         }
-        let mut storage = src.device().qzeros(elem_count, dtype)?;
-        storage.quantize(&src.storage())?;
+        let mut data = vec![T::zeros(); src.len() / T::BLCK_SIZE];
+        T::from_float(&src, &mut data)?;
         Ok(Self {
-            storage,
+            data: Box::new(data),
             shape: shape.clone(),
         })
     }
 
     pub fn dtype(&self) -> GgmlDType {
-        self.storage.dtype()
-    }
-
-    pub fn device(&self) -> Device {
-        self.storage.device()
+        self.data.dtype()
     }
 
     pub fn rank(&self) -> usize {
@@ -359,34 +213,21 @@ impl QTensor {
     }
 
     pub fn dequantize(&self, device: &Device) -> Result<Tensor> {
-        let storage = self.storage.dequantize(self.shape.elem_count())?;
-        let none = crate::op::BackpropOp::none();
-        crate::tensor::from_storage(storage, self.shape.clone(), none, false).to_device(device)
+        let mut f32_data = vec![0f32; self.shape.elem_count()];
+        self.data.to_float(&mut f32_data)?;
+        Tensor::from_vec(f32_data, &self.shape, device)
     }
 
-    pub fn dequantize_f16(&self, device: &Device) -> Result<Tensor> {
-        // In the CUDA case, we have a specialized kernel as this can be useful for volta
-        // architectures. https://github.com/huggingface/candle/issues/2136
-        match &self.storage {
-            QStorage::Cuda(s) => {
-                let s = s.dequantize_f16(self.shape.elem_count())?;
-                let none = crate::op::BackpropOp::none();
-                crate::tensor::from_storage(Storage::Cuda(s), self.shape.clone(), none, false)
-                    .to_device(device)
-            }
-            _ => {
-                let s = self.dequantize(device)?.to_dtype(crate::DType::F16)?;
-                Ok(s)
-            }
-        }
+    pub fn matmul_t(&self, mkn: (usize, usize, usize), lhs: &[f32], dst: &mut [f32]) -> Result<()> {
+        self.data.matmul_t(mkn, lhs, dst)
     }
 
     pub fn storage_size_in_bytes(&self) -> usize {
-        self.storage.size_in_bytes()
+        self.data.storage_size_in_bytes()
     }
 
-    pub fn data(&self) -> Result<Cow<'_, [u8]>> {
-        self.storage.data()
+    pub fn as_ptr(&self) -> *const u8 {
+        self.data.as_ptr()
     }
 }
 
@@ -394,7 +235,6 @@ impl QTensor {
 pub enum QMatMul {
     QTensor(std::sync::Arc<QTensor>),
     Tensor(Tensor),
-    TensorF16(Tensor),
 }
 
 thread_local! {
@@ -408,17 +248,6 @@ thread_local! {
     }
 }
 
-thread_local! {
-    static DEQUANTIZE_ALL_F16: bool = {
-        match std::env::var("CANDLE_DEQUANTIZE_ALL_F16") {
-            Ok(s) => {
-                !s.is_empty() && s != "0"
-            },
-            Err(_) => false,
-        }
-    }
-}
-
 impl QMatMul {
     pub fn from_arc(qtensor: std::sync::Arc<QTensor>) -> Result<Self> {
         let dequantize = match qtensor.dtype() {
@@ -426,11 +255,8 @@ impl QMatMul {
             _ => DEQUANTIZE_ALL.with(|b| *b),
         };
         let t = if dequantize {
-            let tensor = qtensor.dequantize(&qtensor.device())?;
+            let tensor = qtensor.dequantize(&Device::Cpu)?;
             Self::Tensor(tensor)
-        } else if DEQUANTIZE_ALL_F16.with(|b| *b) {
-            let tensor = qtensor.dequantize_f16(&qtensor.device())?;
-            Self::TensorF16(tensor)
         } else {
             Self::QTensor(qtensor)
         };
@@ -440,25 +266,6 @@ impl QMatMul {
     pub fn from_qtensor(qtensor: QTensor) -> Result<Self> {
         Self::from_arc(std::sync::Arc::new(qtensor))
     }
-
-    pub fn dequantize_f16(&self) -> Result<Tensor> {
-        match self {
-            Self::QTensor(t) => t.dequantize_f16(&t.device()),
-            Self::Tensor(t) => t.to_dtype(DType::F16),
-            Self::TensorF16(t) => Ok(t.clone()),
-        }
-    }
-
-    pub fn forward_via_f16(&self, xs: &Tensor) -> Result<Tensor> {
-        let w = self.dequantize_f16()?;
-        let in_dtype = xs.dtype();
-        let w = match *xs.dims() {
-            [b1, b2, _, _] => w.broadcast_left((b1, b2))?.t()?,
-            [bsize, _, _] => w.broadcast_left(bsize)?.t()?,
-            _ => w.t()?,
-        };
-        xs.to_dtype(DType::F16)?.matmul(&w)?.to_dtype(in_dtype)
-    }
 }
 
 impl crate::CustomOp1 for QTensor {
@@ -481,51 +288,27 @@ impl crate::CustomOp1 for QTensor {
             crate::bail!("input tensor has only one dimension {layout:?}")
         }
         let mut dst_shape = src_shape.dims().to_vec();
-        let last_k = dst_shape.pop().context("empty dst_shape")?;
+        let last_k = dst_shape.pop().unwrap();
         if last_k != k {
             crate::bail!("input tensor {layout:?} incompatible with {:?}", self.shape)
         }
         dst_shape.push(n);
         let dst_shape = Shape::from(dst_shape);
-        #[allow(clippy::infallible_destructuring_match)]
-        let self_storage = match &self.storage {
-            QStorage::Cpu(storage) => storage,
-            QStorage::Metal(_) | QStorage::Cuda(_) => crate::bail!("Invalid storage"),
-        };
-        let slice = storage.as_slice::<f32>()?;
-        let slice = &slice[layout.start_offset()..layout.start_offset() + src_shape.elem_count()];
+        let storage = storage.as_slice::<f32>()?;
+        let storage =
+            &storage[layout.start_offset()..layout.start_offset() + src_shape.elem_count()];
         let mut dst_storage = vec![0f32; dst_shape.elem_count()];
-        self_storage.matmul_t((dst_shape.elem_count() / n, k, n), slice, &mut dst_storage)?;
+        self.matmul_t(
+            (dst_shape.elem_count() / n, k, n),
+            storage,
+            &mut dst_storage,
+        )?;
         Ok((crate::CpuStorage::F32(dst_storage), dst_shape))
     }
-
-    fn metal_fwd(
-        &self,
-        storage: &crate::MetalStorage,
-        layout: &crate::Layout,
-    ) -> Result<(crate::MetalStorage, Shape)> {
-        let self_storage = match &self.storage {
-            QStorage::Metal(metal) => metal,
-            _ => unreachable!("Cannot call metal matmul on non metal QTensor"),
-        };
-        self_storage.fwd(&self.shape, storage, layout)
-    }
-
-    fn cuda_fwd(
-        &self,
-        storage: &crate::CudaStorage,
-        layout: &crate::Layout,
-    ) -> Result<(crate::CudaStorage, Shape)> {
-        let self_storage = match &self.storage {
-            QStorage::Cuda(cuda) => cuda,
-            _ => unreachable!("Cannot call cuda matmul on non cuda QTensor"),
-        };
-        self_storage.fwd(&self.shape, storage, layout)
-    }
 }
 
-impl crate::Module for QMatMul {
-    fn forward(&self, xs: &Tensor) -> Result<Tensor> {
+impl QMatMul {
+    pub fn forward(&self, xs: &Tensor) -> Result<Tensor> {
         match self {
             Self::QTensor(t) => xs.apply_op1_no_bwd(t.as_ref()),
             Self::Tensor(w) => {
@@ -536,15 +319,6 @@ impl crate::Module for QMatMul {
                 };
                 xs.matmul(&w)
             }
-            Self::TensorF16(w) => {
-                let in_dtype = xs.dtype();
-                let w = match *xs.dims() {
-                    [b1, b2, _, _] => w.broadcast_left((b1, b2))?.t()?,
-                    [bsize, _, _] => w.broadcast_left(bsize)?.t()?,
-                    _ => w.t()?,
-                };
-                xs.to_dtype(DType::F16)?.matmul(&w)?.to_dtype(in_dtype)
-            }
         }
     }
 }

candle-core/src/quantized/neon.rs

@@ -12,14 +12,6 @@ use core::arch::arm::*;
 #[cfg(target_arch = "aarch64")]
 use core::arch::aarch64::*;
 
-#[inline(always)]
-unsafe fn vdotq_s32(a: int8x16_t, b: int8x16_t) -> int32x4_t {
-    // TODO: dotprod
-    let p0 = vmull_s8(vget_low_s8(a), vget_low_s8(b));
-    let p1 = vmull_s8(vget_high_s8(a), vget_high_s8(b));
-    vaddq_s32(vpaddlq_s16(p0), vpaddlq_s16(p1))
-}
-
 #[inline(always)]
 pub(crate) fn vec_dot_q4_0_q8_0(n: usize, xs: &[BlockQ4_0], ys: &[BlockQ8_0]) -> Result<f32> {
     let qk = QK8_0;
@@ -27,39 +19,71 @@ pub(crate) fn vec_dot_q4_0_q8_0(n: usize, xs: &[BlockQ4_0], ys: &[BlockQ8_0]) ->
     if n % QK8_0 != 0 {
         crate::bail!("vec_dot_q4_0_q8_0: {n} is not divisible by {qk}")
     }
+    if nb % 2 != 0 {
+        crate::bail!("vec_dot_q4_0_q8_0: {nb} is not even")
+    }
 
     unsafe {
         let mut sumv0 = vdupq_n_f32(0.0f32);
-        for i in 0..nb {
+        let mut sumv1 = vdupq_n_f32(0.0f32);
+        for i in (0..nb).step_by(2) {
             let x0 = &xs[i];
+            let x1 = &xs[i + 1];
             let y0 = &ys[i];
+            let y1 = &ys[i + 1];
 
             let m4b = vdupq_n_u8(0x0F);
             let s8b = vdupq_n_s8(0x8);
 
             let v0_0 = vld1q_u8(x0.qs.as_ptr());
+            let v0_1 = vld1q_u8(x1.qs.as_ptr());
 
             // 4-bit -> 8-bit
             let v0_0l = vreinterpretq_s8_u8(vandq_u8(v0_0, m4b));
             let v0_0h = vreinterpretq_s8_u8(vshrq_n_u8(v0_0, 4));
+            let v0_1l = vreinterpretq_s8_u8(vandq_u8(v0_1, m4b));
+            let v0_1h = vreinterpretq_s8_u8(vshrq_n_u8(v0_1, 4));
 
             // sub 8
             let v0_0ls = vsubq_s8(v0_0l, s8b);
             let v0_0hs = vsubq_s8(v0_0h, s8b);
+            let v0_1ls = vsubq_s8(v0_1l, s8b);
+            let v0_1hs = vsubq_s8(v0_1h, s8b);
 
             // load y
             let v1_0l = vld1q_s8(y0.qs.as_ptr());
             let v1_0h = vld1q_s8(y0.qs.as_ptr().add(16));
+            let v1_1l = vld1q_s8(y1.qs.as_ptr());
+            let v1_1h = vld1q_s8(y1.qs.as_ptr().add(16));
+
+            // TODO: Support dotprod when it's available outside of nightly.
+            let pl0l = vmull_s8(vget_low_s8(v0_0ls), vget_low_s8(v1_0l));
+            let pl0h = vmull_s8(vget_high_s8(v0_0ls), vget_high_s8(v1_0l));
+            let ph0l = vmull_s8(vget_low_s8(v0_0hs), vget_low_s8(v1_0h));
+            let ph0h = vmull_s8(vget_high_s8(v0_0hs), vget_high_s8(v1_0h));
+
+            let pl1l = vmull_s8(vget_low_s8(v0_1ls), vget_low_s8(v1_1l));
+            let pl1h = vmull_s8(vget_high_s8(v0_1ls), vget_high_s8(v1_1l));
+            let ph1l = vmull_s8(vget_low_s8(v0_1hs), vget_low_s8(v1_1h));
+            let ph1h = vmull_s8(vget_high_s8(v0_1hs), vget_high_s8(v1_1h));
+
+            let pl0 = vaddq_s32(vpaddlq_s16(pl0l), vpaddlq_s16(pl0h));
+            let ph0 = vaddq_s32(vpaddlq_s16(ph0l), vpaddlq_s16(ph0h));
+            let pl1 = vaddq_s32(vpaddlq_s16(pl1l), vpaddlq_s16(pl1h));
+            let ph1 = vaddq_s32(vpaddlq_s16(ph1l), vpaddlq_s16(ph1h));
 
-            let pl0 = vdotq_s32(v0_0ls, v1_0l);
-            let ph0 = vdotq_s32(v0_0hs, v1_0h);
             sumv0 = vmlaq_n_f32(
                 sumv0,
                 vcvtq_f32_s32(vaddq_s32(pl0, ph0)),
                 x0.d.to_f32() * y0.d.to_f32(),
             );
+            sumv1 = vmlaq_n_f32(
+                sumv1,
+                vcvtq_f32_s32(vaddq_s32(pl1, ph1)),
+                x1.d.to_f32() * y1.d.to_f32(),
+            );
         }
-        Ok(vaddvq_f32(sumv0))
+        Ok(vaddvq_f32(sumv0) + vaddvq_f32(sumv1))
     }
 }
 
@@ -70,29 +94,57 @@ pub(crate) fn vec_dot_q8_0_q8_0(n: usize, xs: &[BlockQ8_0], ys: &[BlockQ8_0]) ->
         crate::bail!("vec_dot_q8_0_q8_0: {n} is not divisible by {qk}")
     }
     let nb = n / QK8_0;
+    if nb % 2 != 0 {
+        crate::bail!("vec_dot_q8_0_q8_0: {nb} is not even")
+    }
     unsafe {
         let mut sumv0 = vdupq_n_f32(0.0f32);
-        for i in 0..nb {
+        let mut sumv1 = vdupq_n_f32(0.0f32);
+        for i in (0..nb).step_by(2) {
             let x0 = &xs[i];
+            let x1 = &xs[i + 1];
             let y0 = &ys[i];
+            let y1 = &ys[i + 1];
 
             let x0_0 = vld1q_s8(x0.qs.as_ptr());
             let x0_1 = vld1q_s8(x0.qs.as_ptr().add(16));
+            let x1_0 = vld1q_s8(x1.qs.as_ptr());
+            let x1_1 = vld1q_s8(x1.qs.as_ptr().add(16));
 
             // load y
             let y0_0 = vld1q_s8(y0.qs.as_ptr());
             let y0_1 = vld1q_s8(y0.qs.as_ptr().add(16));
+            let y1_0 = vld1q_s8(y1.qs.as_ptr());
+            let y1_1 = vld1q_s8(y1.qs.as_ptr().add(16));
 
-            let p0 = vdotq_s32(x0_0, y0_0);
-            let p1 = vdotq_s32(x0_1, y0_1);
+            // TODO dotprod once this is the intrinsics are.
+            let p0_0 = vmull_s8(vget_low_s8(x0_0), vget_low_s8(y0_0));
+            let p0_1 = vmull_s8(vget_high_s8(x0_0), vget_high_s8(y0_0));
+            let p0_2 = vmull_s8(vget_low_s8(x0_1), vget_low_s8(y0_1));
+            let p0_3 = vmull_s8(vget_high_s8(x0_1), vget_high_s8(y0_1));
+
+            let p1_0 = vmull_s8(vget_low_s8(x1_0), vget_low_s8(y1_0));
+            let p1_1 = vmull_s8(vget_high_s8(x1_0), vget_high_s8(y1_0));
+            let p1_2 = vmull_s8(vget_low_s8(x1_1), vget_low_s8(y1_1));
+            let p1_3 = vmull_s8(vget_high_s8(x1_1), vget_high_s8(y1_1));
+
+            let p0 = vaddq_s32(vpaddlq_s16(p0_0), vpaddlq_s16(p0_1));
+            let p1 = vaddq_s32(vpaddlq_s16(p0_2), vpaddlq_s16(p0_3));
+            let p2 = vaddq_s32(vpaddlq_s16(p1_0), vpaddlq_s16(p1_1));
+            let p3 = vaddq_s32(vpaddlq_s16(p1_2), vpaddlq_s16(p1_3));
 
             sumv0 = vmlaq_n_f32(
                 sumv0,
                 vcvtq_f32_s32(vaddq_s32(p0, p1)),
                 x0.d.to_f32() * y0.d.to_f32(),
             );
+            sumv1 = vmlaq_n_f32(
+                sumv1,
+                vcvtq_f32_s32(vaddq_s32(p2, p3)),
+                x1.d.to_f32() * y1.d.to_f32(),
+            );
         }
-        Ok(vaddvq_f32(sumv0))
+        Ok(vaddvq_f32(sumv0) + vaddvq_f32(sumv1))
     }
 }
 
@@ -113,7 +165,10 @@ pub(crate) fn vec_dot_q8k_q8k(n: usize, xs: &[BlockQ8K], ys: &[BlockQ8K]) -> Res
             for i in (0..QK_K).step_by(16) {
                 let xs = vld1q_s8(xs.add(i));
                 let ys = vld1q_s8(ys.add(i));
-                let xy = vdotq_s32(xs, ys);
+                let xy_lo = vmull_s8(vget_low_s8(xs), vget_low_s8(ys));
+                let xy_up = vmull_s8(vget_high_s8(xs), vget_high_s8(ys));
+
+                let xy = vaddq_s32(vpaddlq_s16(xy_lo), vpaddlq_s16(xy_up));
                 sum_i = vaddq_s32(sum_i, xy)
             }
             sumf += vaddvq_s32(sum_i) as f32 * scale
@@ -183,16 +238,30 @@ pub(crate) fn vec_dot_q6k_q8k(n: usize, xs: &[BlockQ6K], ys: &[BlockQ8K]) -> Res
                 let q6bytes_2 = vreinterpretq_s8_u8(vorrq_u8(vandq_u8(q6bits.2, m4b), q6h_2));
                 let q6bytes_3 = vreinterpretq_s8_u8(vorrq_u8(vandq_u8(q6bits.3, m4b), q6h_3));
 
-                let p0 = vdotq_s32(q6bytes_0, q8bytes.0);
-                let p1 = vdotq_s32(q6bytes_1, q8bytes.1);
+                // TODO: dotprod
+
+                let p0 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q6bytes_0), vget_low_s8(q8bytes.0)),
+                    vmull_s8(vget_high_s8(q6bytes_0), vget_high_s8(q8bytes.0)),
+                );
+                let p1 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q6bytes_1), vget_low_s8(q8bytes.1)),
+                    vmull_s8(vget_high_s8(q6bytes_1), vget_high_s8(q8bytes.1)),
+                );
                 let (scale0, scale1) = (*scale as i32, *scale.add(1) as i32);
-                isum += vaddvq_s32(p0) * scale0 + vaddvq_s32(p1) * scale1;
+                isum += vaddvq_s16(p0) as i32 * scale0 + vaddvq_s16(p1) as i32 * scale1;
                 scale = scale.add(2);
 
-                let p2 = vdotq_s32(q6bytes_2, q8bytes.2);
-                let p3 = vdotq_s32(q6bytes_3, q8bytes.3);
+                let p2 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q6bytes_2), vget_low_s8(q8bytes.2)),
+                    vmull_s8(vget_high_s8(q6bytes_2), vget_high_s8(q8bytes.2)),
+                );
+                let p3 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q6bytes_3), vget_low_s8(q8bytes.3)),
+                    vmull_s8(vget_high_s8(q6bytes_3), vget_high_s8(q8bytes.3)),
+                );
                 let (scale0, scale1) = (*scale as i32, *scale.add(1) as i32);
-                isum += vaddvq_s32(p2) * scale0 + vaddvq_s32(p3) * scale1;
+                isum += vaddvq_s16(p2) as i32 * scale0 + vaddvq_s16(p3) as i32 * scale1;
                 scale = scale.add(2);
 
                 let q8bytes = vld1q_s8_x4(q8);
@@ -212,16 +281,29 @@ pub(crate) fn vec_dot_q6k_q8k(n: usize, xs: &[BlockQ6K], ys: &[BlockQ8K]) -> Res
                 let q6bytes_2 = vreinterpretq_s8_u8(vorrq_u8(vshrq_n_u8(q6bits.2, 4), q6h_2));
                 let q6bytes_3 = vreinterpretq_s8_u8(vorrq_u8(vshrq_n_u8(q6bits.3, 4), q6h_3));
 
-                let p0 = vdotq_s32(q6bytes_0, q8bytes.0);
-                let p1 = vdotq_s32(q6bytes_1, q8bytes.1);
+                // TODO: dotprod case.
+                let p0 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q6bytes_0), vget_low_s8(q8bytes.0)),
+                    vmull_s8(vget_high_s8(q6bytes_0), vget_high_s8(q8bytes.0)),
+                );
+                let p1 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q6bytes_1), vget_low_s8(q8bytes.1)),
+                    vmull_s8(vget_high_s8(q6bytes_1), vget_high_s8(q8bytes.1)),
+                );
                 let (scale0, scale1) = (*scale as i32, *scale.add(1) as i32);
-                isum += vaddvq_s32(p0) * scale0 + vaddvq_s32(p1) * scale1;
+                isum += vaddvq_s16(p0) as i32 * scale0 + vaddvq_s16(p1) as i32 * scale1;
                 scale = scale.add(2);
 
-                let p2 = vdotq_s32(q6bytes_2, q8bytes.2);
-                let p3 = vdotq_s32(q6bytes_3, q8bytes.3);
+                let p2 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q6bytes_2), vget_low_s8(q8bytes.2)),
+                    vmull_s8(vget_high_s8(q6bytes_2), vget_high_s8(q8bytes.2)),
+                );
+                let p3 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q6bytes_3), vget_low_s8(q8bytes.3)),
+                    vmull_s8(vget_high_s8(q6bytes_3), vget_high_s8(q8bytes.3)),
+                );
                 let (scale0, scale1) = (*scale as i32, *scale.add(1) as i32);
-                isum += vaddvq_s32(p2) * scale0 + vaddvq_s32(p3) * scale1;
+                isum += vaddvq_s16(p2) as i32 * scale0 + vaddvq_s16(p3) as i32 * scale1;
                 scale = scale.add(2);
             }
             sum += d_all * y.d * ((isum - 32 * isum_mins) as f32);
@@ -298,14 +380,28 @@ pub(crate) fn vec_dot_q5k_q8k(n: usize, xs: &[BlockQ5K], ys: &[BlockQ8K]) -> Res
                 let q5bytes_2 = vreinterpretq_s8_u8(vorrq_u8(vshrq_n_u8(q5bits.0, 4), q5h_2));
                 let q5bytes_3 = vreinterpretq_s8_u8(vorrq_u8(vshrq_n_u8(q5bits.1, 4), q5h_3));
 
-                let p0 = vdotq_s32(q5bytes_0, q8bytes.0);
-                let p1 = vdotq_s32(q5bytes_1, q8bytes.1);
-                sumi += vaddvq_s32(vaddq_s32(p0, p1)) * *scales as i32;
+                // TODO: dotprod
+
+                let p0 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q5bytes_0), vget_low_s8(q8bytes.0)),
+                    vmull_s8(vget_high_s8(q5bytes_0), vget_high_s8(q8bytes.0)),
+                );
+                let p1 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q5bytes_1), vget_low_s8(q8bytes.1)),
+                    vmull_s8(vget_high_s8(q5bytes_1), vget_high_s8(q8bytes.1)),
+                );
+                sumi += vaddvq_s16(vaddq_s16(p0, p1)) as i32 * *scales as i32;
                 scales = scales.add(1);
 
-                let p2 = vdotq_s32(q5bytes_2, q8bytes.2);
-                let p3 = vdotq_s32(q5bytes_3, q8bytes.3);
-                sumi += vaddvq_s32(vaddq_s32(p2, p3)) * *scales as i32;
+                let p2 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q5bytes_2), vget_low_s8(q8bytes.2)),
+                    vmull_s8(vget_high_s8(q5bytes_2), vget_high_s8(q8bytes.2)),
+                );
+                let p3 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q5bytes_3), vget_low_s8(q8bytes.3)),
+                    vmull_s8(vget_high_s8(q5bytes_3), vget_high_s8(q8bytes.3)),
+                );
+                sumi += vaddvq_s16(vaddq_s16(p2, p3)) as i32 * *scales as i32;
                 scales = scales.add(1);
             }
             sumf += d * sumi as f32 - dmin * sumi_mins as f32;
@@ -368,15 +464,22 @@ pub(crate) fn vec_dot_q4k_q8k(n: usize, xs: &[BlockQ4K], ys: &[BlockQ8K]) -> Res
             for j in 0..QK_K / 64 {
                 let q4bits = vld1q_u8_x2(q4);
                 q4 = q4.add(32);
+                // TODO: dotprod
                 let q8bytes = vld1q_s8_x2(q8);
                 q8 = q8.add(32);
                 let q4bytes = int8x16x2_t(
                     vreinterpretq_s8_u8(vandq_u8(q4bits.0, m4b)),
                     vreinterpretq_s8_u8(vandq_u8(q4bits.1, m4b)),
                 );
-                let p0 = vdotq_s32(q4bytes.0, q8bytes.0);
-                let p1 = vdotq_s32(q4bytes.1, q8bytes.1);
-                sumi1 += vaddvq_s32(vaddq_s32(p0, p1)) * scales[2 * j] as i32;
+                let p0 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q4bytes.0), vget_low_s8(q8bytes.0)),
+                    vmull_s8(vget_high_s8(q4bytes.0), vget_high_s8(q8bytes.0)),
+                );
+                let p1 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q4bytes.1), vget_low_s8(q8bytes.1)),
+                    vmull_s8(vget_high_s8(q4bytes.1), vget_high_s8(q8bytes.1)),
+                );
+                sumi1 += vaddvq_s16(vaddq_s16(p0, p1)) as i32 * scales[2 * j] as i32;
 
                 let q8bytes = vld1q_s8_x2(q8);
                 q8 = q8.add(32);
@@ -384,9 +487,15 @@ pub(crate) fn vec_dot_q4k_q8k(n: usize, xs: &[BlockQ4K], ys: &[BlockQ8K]) -> Res
                     vreinterpretq_s8_u8(vshrq_n_u8(q4bits.0, 4)),
                     vreinterpretq_s8_u8(vshrq_n_u8(q4bits.1, 4)),
                 );
-                let p2 = vdotq_s32(q4bytes.0, q8bytes.0);
-                let p3 = vdotq_s32(q4bytes.1, q8bytes.1);
-                sumi2 += vaddvq_s32(vaddq_s32(p2, p3)) * scales[2 * j + 1] as i32;
+                let p2 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q4bytes.0), vget_low_s8(q8bytes.0)),
+                    vmull_s8(vget_high_s8(q4bytes.0), vget_high_s8(q8bytes.0)),
+                );
+                let p3 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q4bytes.1), vget_low_s8(q8bytes.1)),
+                    vmull_s8(vget_high_s8(q4bytes.1), vget_high_s8(q8bytes.1)),
+                );
+                sumi2 += vaddvq_s16(vaddq_s16(p2, p3)) as i32 * scales[2 * j + 1] as i32;
             }
             sumf += d * (sumi1 + sumi2) as f32;
         }
@@ -464,14 +573,27 @@ pub(crate) fn vec_dot_q3k_q8k(n: usize, xs: &[BlockQ3K], ys: &[BlockQ8K]) -> Res
                     vreinterpretq_s8_u8(q3h_3),
                 );
 
-                let p0 = vdotq_s32(q3bytes_0, q8bytes_1.0);
-                let p1 = vdotq_s32(q3bytes_1, q8bytes_1.1);
-                let p2 = vdotq_s32(q3bytes_2, q8bytes_1.2);
-                let p3 = vdotq_s32(q3bytes_3, q8bytes_1.3);
-                isum += vaddvq_s32(p0) * *scale as i32
-                    + vaddvq_s32(p1) * *scale.add(1) as i32
-                    + vaddvq_s32(p2) * *scale.add(2) as i32
-                    + vaddvq_s32(p3) * *scale.add(3) as i32;
+                // TODO: dotprod
+                let p0 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q3bytes_0), vget_low_s8(q8bytes_1.0)),
+                    vmull_s8(vget_high_s8(q3bytes_0), vget_high_s8(q8bytes_1.0)),
+                );
+                let p1 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q3bytes_1), vget_low_s8(q8bytes_1.1)),
+                    vmull_s8(vget_high_s8(q3bytes_1), vget_high_s8(q8bytes_1.1)),
+                );
+                let p2 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q3bytes_2), vget_low_s8(q8bytes_1.2)),
+                    vmull_s8(vget_high_s8(q3bytes_2), vget_high_s8(q8bytes_1.2)),
+                );
+                let p3 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q3bytes_3), vget_low_s8(q8bytes_1.3)),
+                    vmull_s8(vget_high_s8(q3bytes_3), vget_high_s8(q8bytes_1.3)),
+                );
+                isum += vaddvq_s16(p0) as i32 * *scale as i32
+                    + vaddvq_s16(p1) as i32 * *scale.add(1) as i32
+                    + vaddvq_s16(p2) as i32 * *scale.add(2) as i32
+                    + vaddvq_s16(p3) as i32 * *scale.add(3) as i32;
                 scale = scale.add(4);
 
                 let q3h_0 = vbicq_u8(m2, qhbits.0);
@@ -496,14 +618,27 @@ pub(crate) fn vec_dot_q3k_q8k(n: usize, xs: &[BlockQ3K], ys: &[BlockQ8K]) -> Res
                     vreinterpretq_s8_u8(q3h_3),
                 );
 
-                let p0 = vdotq_s32(q3bytes_0, q8bytes_2.0);
-                let p1 = vdotq_s32(q3bytes_1, q8bytes_2.1);
-                let p2 = vdotq_s32(q3bytes_2, q8bytes_2.2);
-                let p3 = vdotq_s32(q3bytes_3, q8bytes_2.3);
-                isum += vaddvq_s32(p0) * *scale as i32
-                    + vaddvq_s32(p1) * *scale.add(1) as i32
-                    + vaddvq_s32(p2) * *scale.add(2) as i32
-                    + vaddvq_s32(p3) * *scale.add(3) as i32;
+                // TODO: dotprod
+                let p0 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q3bytes_0), vget_low_s8(q8bytes_2.0)),
+                    vmull_s8(vget_high_s8(q3bytes_0), vget_high_s8(q8bytes_2.0)),
+                );
+                let p1 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q3bytes_1), vget_low_s8(q8bytes_2.1)),
+                    vmull_s8(vget_high_s8(q3bytes_1), vget_high_s8(q8bytes_2.1)),
+                );
+                let p2 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q3bytes_2), vget_low_s8(q8bytes_2.2)),
+                    vmull_s8(vget_high_s8(q3bytes_2), vget_high_s8(q8bytes_2.2)),
+                );
+                let p3 = vaddq_s16(
+                    vmull_s8(vget_low_s8(q3bytes_3), vget_low_s8(q8bytes_2.3)),
+                    vmull_s8(vget_high_s8(q3bytes_3), vget_high_s8(q8bytes_2.3)),
+                );
+                isum += vaddvq_s16(p0) as i32 * *scale as i32
+                    + vaddvq_s16(p1) as i32 * *scale.add(1) as i32
+                    + vaddvq_s16(p2) as i32 * *scale.add(2) as i32
+                    + vaddvq_s16(p3) as i32 * *scale.add(3) as i32;
                 scale = scale.add(4);
 
                 if j == 0 {
@@ -561,6 +696,7 @@ pub(crate) fn vec_dot_q2k_q8k(n: usize, xs: &[BlockQ2K], ys: &[BlockQ8K]) -> Res
             let mut is = 0usize;
 
             // TODO: dotprod
+
             for _j in 0..QK_K / 128 {
                 let q2bits = vld1q_u8_x2(q2);
                 q2 = q2.add(32);
@@ -607,7 +743,14 @@ unsafe fn multiply_accum_with_scale(
     q2bytes: int8x16x2_t,
     q8bytes: int8x16x2_t,
 ) -> i32 {
-    let p1 = vdotq_s32(q2bytes.0, q8bytes.0);
-    let p2 = vdotq_s32(q2bytes.1, q8bytes.1);
-    vaddvq_s32(p1) * aux[is + index] as i32 + vaddvq_s32(p2) * aux[is + 1 + index] as i32
+    let p1 = vaddq_s16(
+        vmull_s8(vget_low_s8(q2bytes.0), vget_low_s8(q8bytes.0)),
+        vmull_s8(vget_high_s8(q2bytes.0), vget_high_s8(q8bytes.0)),
+    );
+    let p2 = vaddq_s16(
+        vmull_s8(vget_low_s8(q2bytes.1), vget_low_s8(q8bytes.1)),
+        vmull_s8(vget_high_s8(q2bytes.1), vget_high_s8(q8bytes.1)),
+    );
+    vaddvq_s16(p1) as i32 * aux[is + index] as i32
+        + vaddvq_s16(p2) as i32 * aux[is + 1 + index] as i32
 }

candle-core/src/quantized/simd128.rs

@@ -11,6 +11,10 @@ pub(crate) fn vec_dot_q4_0_q8_0(n: usize, xs: &[BlockQ4_0], ys: &[BlockQ8_0]) ->
     if n % QK8_0 != 0 {
         crate::bail!("vec_dot_q4_0_q8_0: {n} is not divisible by {qk}")
     }
+    let nb = n / QK8_0;
+    if nb % 2 != 0 {
+        crate::bail!("vec_dot_q4_0_q8_0: {nb} is not even")
+    }
     unsafe {
         let mut acc = f32x4_splat(0.0f32);
         for (x, y) in xs.iter().zip(ys.iter()) {
@@ -57,6 +61,10 @@ pub(crate) fn vec_dot_q8_0_q8_0(n: usize, xs: &[BlockQ8_0], ys: &[BlockQ8_0]) ->
     if n % QK8_0 != 0 {
         crate::bail!("vec_dot_q8_0_q8_0: {n} is not divisible by {qk}")
     }
+    let nb = n / QK8_0;
+    if nb % 2 != 0 {
+        crate::bail!("vec_dot_q8_0_q8_0: {nb} is not even")
+    }
     unsafe {
         let mut acc = f32x4_splat(0.0f32);
         for (x, y) in xs.iter().zip(ys.iter()) {

candle-core/src/safetensors.rs

@@ -1,14 +1,3 @@
-//! Module to load `safetensor` files into CPU/GPU memory.
-//!
-//! There are multiple ways to load tensors from safetensor files:
-//! - `load` function for loading directly into memory and returning a HashMap of tensors
-//! - `MmapedSafetensors` for memory mapping files and avoiding full allocation
-//! - `SliceSafetensors` for working with in-memory buffers
-//! - `BufferedSafetensors` for owning a buffer of data
-//!
-//! Tensors can also be serialized to safetensor format using the `save` function or
-//! `Tensor::save_safetensors` method.
-//!
 use crate::{DType, Device, Error, Result, Tensor, WithDType};
 use safetensors::tensor as st;
 use safetensors::tensor::SafeTensors;
@@ -182,7 +171,7 @@ pub trait Load {
     fn load(&self, device: &Device) -> Result<Tensor>;
 }
 
-impl Load for st::TensorView<'_> {
+impl<'a> Load for st::TensorView<'a> {
     fn load(&self, device: &Device) -> Result<Tensor> {
         convert(self, device)
     }
@@ -360,30 +349,6 @@ impl MmapedSafetensors {
     }
 }
 
-pub struct SliceSafetensors<'a> {
-    safetensors: SafeTensors<'a>,
-}
-
-impl<'a> SliceSafetensors<'a> {
-    /// Creates a wrapper around a binary buffer and deserialize the safetensors header.
-    pub fn new(buffer: &'a [u8]) -> Result<Self> {
-        let safetensors = safetensors::SafeTensors::deserialize(buffer)?;
-        Ok(Self { safetensors })
-    }
-
-    pub fn load(&self, name: &str, dev: &Device) -> Result<Tensor> {
-        self.safetensors.tensor(name)?.load(dev)
-    }
-
-    pub fn tensors(&self) -> Vec<(String, st::TensorView<'_>)> {
-        self.safetensors.tensors()
-    }
-
-    pub fn get(&self, name: &str) -> Result<st::TensorView<'_>> {
-        Ok(self.safetensors.tensor(name)?)
-    }
-}
-
 pub struct BufferedSafetensors {
     safetensors: yoke::Yoke<SafeTensors_<'static>, Vec<u8>>,
 }

candle-core/src/scalar.rs

@@ -1,5 +1,3 @@
-//! TensorScalar Enum and Trait
-//!
 use crate::{Result, Tensor, WithDType};
 
 pub enum TensorScalar {

candle-core/src/shape.rs

@@ -142,12 +142,6 @@ impl Shape {
         &self.0
     }
 
-    /// The dimension size for a specified dimension index.
-    pub fn dim<D: Dim>(&self, dim: D) -> Result<usize> {
-        let dim = dim.to_index(self, "dim")?;
-        Ok(self.dims()[dim])
-    }
-
     /// The total number of elements, this is the product of all dimension sizes.
     pub fn elem_count(&self) -> usize {
         self.0.iter().product()
@@ -177,7 +171,7 @@ impl Shape {
         }
         let mut acc = 1;
         for (&stride, &dim) in stride.iter().zip(self.0.iter()).rev() {
-            if dim > 1 && stride != acc {
+            if stride != acc {
                 return false;
             }
             acc *= dim;
@@ -192,7 +186,7 @@ impl Shape {
         }
         let mut acc = 1;
         for (&stride, &dim) in stride.iter().zip(self.0.iter()) {
-            if dim > 1 && stride != acc {
+            if stride != acc {
                 return false;
             }
             acc *= dim;
@@ -209,7 +203,7 @@ impl Shape {
 
     /// Check whether the two shapes are compatible for broadcast, and if it is the case return the
     /// broadcasted shape. This is to be used for binary pointwise ops.
-    pub fn broadcast_shape_binary_op(&self, rhs: &Self, op: &'static str) -> Result<Shape> {
+    pub(crate) fn broadcast_shape_binary_op(&self, rhs: &Self, op: &'static str) -> Result<Shape> {
         let lhs = self;
         let lhs_dims = lhs.dims();
         let rhs_dims = rhs.dims();
@@ -310,7 +304,6 @@ impl Dim for usize {
 pub enum D {
     Minus1,
     Minus2,
-    Minus(usize),
 }
 
 impl D {
@@ -318,7 +311,6 @@ impl D {
         let dim = match self {
             Self::Minus1 => -1,
             Self::Minus2 => -2,
-            Self::Minus(u) => -(*u as i32),
         };
         Error::DimOutOfRange {
             shape: shape.clone(),
@@ -335,7 +327,6 @@ impl Dim for D {
         match self {
             Self::Minus1 if rank >= 1 => Ok(rank - 1),
             Self::Minus2 if rank >= 2 => Ok(rank - 2),
-            Self::Minus(u) if *u > 0 && rank >= *u => Ok(rank - *u),
             _ => Err(self.out_of_range(shape, op)),
         }
     }
@@ -345,7 +336,6 @@ impl Dim for D {
         match self {
             Self::Minus1 => Ok(rank),
             Self::Minus2 if rank >= 1 => Ok(rank - 1),
-            Self::Minus(u) if *u > 0 && rank + 1 >= *u => Ok(rank + 1 - *u),
             _ => Err(self.out_of_range(shape, op)),
         }
     }
@@ -488,6 +478,23 @@ extract_dims!(
     (usize, usize, usize, usize, usize)
 );
 
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn stride() {
+        let shape = Shape::from(());
+        assert_eq!(shape.stride_contiguous(), Vec::<usize>::new());
+        let shape = Shape::from(42);
+        assert_eq!(shape.stride_contiguous(), [1]);
+        let shape = Shape::from((42, 1337));
+        assert_eq!(shape.stride_contiguous(), [1337, 1]);
+        let shape = Shape::from((299, 792, 458));
+        assert_eq!(shape.stride_contiguous(), [458 * 792, 458, 1]);
+    }
+}
+
 pub trait ShapeWithOneHole {
     fn into_shape(self, el_count: usize) -> Result<Shape>;
 }
@@ -620,20 +627,3 @@ impl ShapeWithOneHole for (usize, usize, usize, usize, ()) {
         Ok((d1, d2, d3, d4, d).into())
     }
 }
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn stride() {
-        let shape = Shape::from(());
-        assert_eq!(shape.stride_contiguous(), Vec::<usize>::new());
-        let shape = Shape::from(42);
-        assert_eq!(shape.stride_contiguous(), [1]);
-        let shape = Shape::from((42, 1337));
-        assert_eq!(shape.stride_contiguous(), [1337, 1]);
-        let shape = Shape::from((299, 792, 458));
-        assert_eq!(shape.stride_contiguous(), [458 * 792, 458, 1]);
-    }
-}

candle-core/src/sort.rs

@@ -1,244 +0,0 @@
-use crate::{Result, Tensor};
-use rayon::prelude::*;
-
-#[derive(Debug, Clone, Copy)]
-struct ArgSort {
-    asc: bool,
-    last_dim: usize,
-}
-
-impl ArgSort {
-    fn asort<T: crate::WithDType>(&self, vs: &[T], layout: &crate::Layout) -> Vec<u32> {
-        #[allow(clippy::uninit_vec)]
-        // Safety: indexes are set later in the parallelized section.
-        let mut sort_indexes = unsafe {
-            let el_count = layout.shape().elem_count();
-            let mut v = Vec::with_capacity(el_count);
-            v.set_len(el_count);
-            v
-        };
-        if self.asc {
-            sort_indexes
-                .par_chunks_exact_mut(self.last_dim)
-                .zip(vs.par_chunks_exact(self.last_dim))
-                .for_each(|(indexes, vs)| {
-                    indexes
-                        .iter_mut()
-                        .enumerate()
-                        .for_each(|(i, v)| *v = i as u32);
-                    indexes.sort_by(|&i, &j| {
-                        vs[i as usize]
-                            .partial_cmp(&vs[j as usize])
-                            .unwrap_or(std::cmp::Ordering::Greater)
-                    })
-                });
-        } else {
-            sort_indexes
-                .par_chunks_exact_mut(self.last_dim)
-                .zip(vs.par_chunks_exact(self.last_dim))
-                .for_each(|(indexes, vs)| {
-                    indexes
-                        .iter_mut()
-                        .enumerate()
-                        .for_each(|(i, v)| *v = i as u32);
-                    indexes.sort_by(|&j, &i| {
-                        vs[i as usize]
-                            .partial_cmp(&vs[j as usize])
-                            .unwrap_or(std::cmp::Ordering::Greater)
-                    })
-                });
-        }
-        sort_indexes
-    }
-}
-
-#[cfg(feature = "cuda")]
-mod cuda {
-    use super::*;
-    use crate::cuda_backend::cudarc::driver::{
-        CudaSlice, DeviceRepr, LaunchAsync, LaunchConfig, ValidAsZeroBits,
-    };
-    use crate::cuda_backend::{kernel_name, kernels, CudaStorageSlice as S, WrapErr};
-    use crate::{CudaDevice, WithDType};
-
-    impl crate::cuda_backend::Map1Any for ArgSort {
-        fn f<T: DeviceRepr + WithDType + ValidAsZeroBits, W: Fn(CudaSlice<T>) -> S>(
-            &self,
-            src: &CudaSlice<T>,
-            dev: &CudaDevice,
-            layout: &crate::Layout,
-            _wrap: W,
-        ) -> Result<S> {
-            let slice = match layout.contiguous_offsets() {
-                None => crate::bail!("input has to be contiguous"),
-                Some((o1, o2)) => src.slice(o1..o2),
-            };
-            let elem_count = layout.shape().elem_count();
-            let dst = unsafe { dev.alloc::<u32>(elem_count) }.w()?;
-            let func = if self.asc {
-                dev.get_or_load_func(&kernel_name::<T>("asort_asc"), kernels::SORT)?
-            } else {
-                dev.get_or_load_func(&kernel_name::<T>("asort_desc"), kernels::SORT)?
-            };
-            let ncols = self.last_dim;
-            let nrows = elem_count / ncols;
-            let ncols_pad = next_power_of_2(ncols);
-            let params = (&slice, &dst, ncols as i32, ncols_pad as i32);
-            let cfg = LaunchConfig {
-                grid_dim: (1, nrows as u32, 1),
-                block_dim: (ncols_pad as u32, 1, 1),
-                shared_mem_bytes: (ncols_pad * std::mem::size_of::<u32>()) as u32,
-            };
-            unsafe { func.launch(cfg, params) }.w()?;
-            Ok(S::U32(dst))
-        }
-    }
-}
-
-impl crate::CustomOp1 for ArgSort {
-    fn name(&self) -> &'static str {
-        "argsort"
-    }
-
-    fn cpu_fwd(
-        &self,
-        storage: &crate::CpuStorage,
-        layout: &crate::Layout,
-    ) -> Result<(crate::CpuStorage, crate::Shape)> {
-        let sort_indexes = match storage {
-            crate::CpuStorage::U8(vs) => self.asort(vs, layout),
-            crate::CpuStorage::U32(vs) => self.asort(vs, layout),
-            crate::CpuStorage::I64(vs) => self.asort(vs, layout),
-            crate::CpuStorage::BF16(vs) => self.asort(vs, layout),
-            crate::CpuStorage::F16(vs) => self.asort(vs, layout),
-            crate::CpuStorage::F32(vs) => self.asort(vs, layout),
-            crate::CpuStorage::F64(vs) => self.asort(vs, layout),
-        };
-        let sort_indexes = crate::CpuStorage::U32(sort_indexes);
-        Ok((sort_indexes, layout.shape().into()))
-    }
-
-    #[cfg(feature = "cuda")]
-    fn cuda_fwd(
-        &self,
-        storage: &crate::CudaStorage,
-        layout: &crate::Layout,
-    ) -> Result<(crate::CudaStorage, crate::Shape)> {
-        use crate::backend::BackendStorage;
-        use crate::cuda_backend::Map1Any;
-        let dev = storage.device();
-        let slice = self.map(&storage.slice, dev, layout)?;
-        let dst = crate::cuda_backend::CudaStorage {
-            slice,
-            device: dev.clone(),
-        };
-        Ok((dst, layout.shape().clone()))
-    }
-
-    #[cfg(feature = "metal")]
-    fn metal_fwd(
-        &self,
-        storage: &crate::MetalStorage,
-        layout: &crate::Layout,
-    ) -> Result<(crate::MetalStorage, crate::Shape)> {
-        use crate::backend::BackendStorage;
-        use crate::DType;
-
-        let name = {
-            if self.asc {
-                match storage.dtype() {
-                    DType::BF16 => "asort_asc_bf16",
-                    DType::F16 => "asort_asc_f16",
-                    DType::F32 => "asort_asc_f32",
-                    DType::F64 => "asort_asc_f64",
-                    DType::U8 => "asort_asc_u8",
-                    DType::U32 => "asort_asc_u32",
-                    DType::I64 => "asort_asc_i64",
-                }
-            } else {
-                match storage.dtype() {
-                    DType::BF16 => "asort_desc_bf16",
-                    DType::F16 => "asort_desc_f16",
-                    DType::F32 => "asort_desc_f32",
-                    DType::F64 => "asort_desc_f64",
-                    DType::U8 => "asort_desc_u8",
-                    DType::U32 => "asort_desc_u32",
-                    DType::I64 => "asort_desc_i64",
-                }
-            }
-        };
-        let device = storage.device();
-        let kernels = device.kernels();
-        let command_buffer = device.command_buffer()?;
-        let el = layout.shape().elem_count();
-        let ncols = self.last_dim;
-        let nrows = el / ncols;
-        let src = crate::metal_backend::buffer_o(storage.buffer(), layout, storage.dtype());
-        let dst = device.new_buffer(el, DType::U32, "asort")?;
-        let mut ncols_pad = 1;
-        while ncols_pad < ncols {
-            ncols_pad *= 2;
-        }
-        candle_metal_kernels::call_arg_sort(
-            device.metal_device(),
-            &command_buffer,
-            kernels,
-            name,
-            nrows,
-            ncols,
-            ncols_pad,
-            src,
-            &dst,
-        )
-        .map_err(crate::Error::wrap)?;
-        let dst = crate::MetalStorage::new(dst, device.clone(), el, DType::U32);
-        Ok((dst, layout.shape().clone()))
-    }
-}
-
-#[allow(unused)]
-fn next_power_of_2(x: usize) -> usize {
-    let mut n = 1;
-    while n < x {
-        n *= 2
-    }
-    n
-}
-
-impl Tensor {
-    /// Returns the indices that sort the tensor along the last dimension.
-    ///
-    /// If `asc` is `true`, sorting is in ascending order. Otherwise sorting is performed in
-    /// descending order. The sort is unstable so there is no guarantees on the final order when it
-    /// comes to ties.
-    pub fn arg_sort_last_dim(&self, asc: bool) -> Result<Tensor> {
-        if !self.is_contiguous() {
-            return Err(crate::Error::RequiresContiguous {
-                op: "arg_sort_last_dim",
-            });
-        }
-        let last_dim = match self.dims().last() {
-            None => crate::bail!("empty last-dim in arg-sort"),
-            Some(last_dim) => *last_dim,
-        };
-        // No need for a backward pass for arg sort.
-        self.apply_op1_no_bwd(&ArgSort { asc, last_dim })
-    }
-
-    /// Sorts the tensor along the last dimension, returns the sorted tensor together with the
-    /// sorted indexes.
-    ///
-    /// If `asc` is `true`, sorting is in ascending order. Otherwise sorting is performed in
-    /// descending order. The sort is unstable so there is no guarantees on the final order when it
-    /// comes to ties.
-    pub fn sort_last_dim(&self, asc: bool) -> Result<(Tensor, Tensor)> {
-        if !self.is_contiguous() {
-            return Err(crate::Error::RequiresContiguous {
-                op: "sort_last_dim",
-            });
-        }
-        let asort = self.arg_sort_last_dim(asc)?;
-        let sorted = self.gather(&asort, crate::D::Minus1)?;
-        Ok((sorted, asort))
-    }
-}

candle-core/src/storage.rs

@@ -1,7 +1,6 @@
 use crate::backend::BackendStorage;
-use crate::op::{self, CmpOp, ReduceOp};
-use crate::{CpuStorage, CudaStorage, DType, Device, Error, Layout, MetalStorage, Result, Shape};
-use crate::{CustomOp1, CustomOp2, CustomOp3, InplaceOp1, InplaceOp2, InplaceOp3};
+use crate::op::{self, CmpOp, CustomOp1, CustomOp2, CustomOp3, ReduceOp};
+use crate::{CpuStorage, CudaStorage, DType, Device, Error, Layout, Result, Shape};
 
 // We do not want to implement Clone on Storage as cloning may fail because of
 // out of memory. Instead try_clone should be used.
@@ -9,7 +8,6 @@ use crate::{CustomOp1, CustomOp2, CustomOp3, InplaceOp1, InplaceOp2, InplaceOp3}
 pub enum Storage {
     Cpu(CpuStorage),
     Cuda(CudaStorage),
-    Metal(MetalStorage),
 }
 
 impl Storage {
@@ -20,10 +18,6 @@ impl Storage {
                 let storage = storage.try_clone(layout)?;
                 Ok(Self::Cuda(storage))
             }
-            Self::Metal(storage) => {
-                let storage = storage.try_clone(layout)?;
-                Ok(Self::Metal(storage))
-            }
         }
     }
 
@@ -31,7 +25,6 @@ impl Storage {
         match self {
             Self::Cpu(_) => Device::Cpu,
             Self::Cuda(storage) => Device::Cuda(storage.device().clone()),
-            Self::Metal(storage) => Device::Metal(storage.device().clone()),
         }
     }
 
@@ -39,24 +32,13 @@ impl Storage {
         match self {
             Self::Cpu(storage) => storage.dtype(),
             Self::Cuda(storage) => storage.dtype(),
-            Self::Metal(storage) => storage.dtype(),
         }
     }
 
     pub(crate) fn same_device(&self, rhs: &Self, op: &'static str) -> Result<()> {
-        let lhs_device = self.device();
-        let rhs_device = rhs.device();
-        let lhs = lhs_device.location();
-        let rhs = rhs_device.location();
-        let same_device = if self.device().is_metal() {
-            // On metal, we require the device to be exactly the same rather than
-            // having the same location. In cuda this is not necessary as all CudaDevice on the
-            // same GPU will use the same cuda stream.
-            lhs_device.same_device(&rhs_device)
-        } else {
-            lhs == rhs
-        };
-        if !same_device {
+        let lhs = self.device().location();
+        let rhs = rhs.device().location();
+        if lhs != rhs {
             Err(Error::DeviceMismatchBinaryOp { lhs, rhs, op }.bt())
         } else {
             Ok(())
@@ -83,10 +65,6 @@ impl Storage {
                 let storage = storage.affine(layout, mul, add)?;
                 Ok(Self::Cuda(storage))
             }
-            Self::Metal(storage) => {
-                let storage = storage.affine(layout, mul, add)?;
-                Ok(Self::Metal(storage))
-            }
         }
     }
 
@@ -100,10 +78,6 @@ impl Storage {
                 let storage = storage.powf(layout, alpha)?;
                 Ok(Self::Cuda(storage))
             }
-            Self::Metal(storage) => {
-                let storage = storage.powf(layout, alpha)?;
-                Ok(Self::Metal(storage))
-            }
         }
     }
 
@@ -117,10 +91,6 @@ impl Storage {
                 let storage = storage.elu(layout, alpha)?;
                 Ok(Self::Cuda(storage))
             }
-            Self::Metal(storage) => {
-                let storage = storage.elu(layout, alpha)?;
-                Ok(Self::Metal(storage))
-            }
         }
     }
 
@@ -142,10 +112,6 @@ impl Storage {
                 let storage = lhs.cmp(op, rhs, lhs_layout, rhs_layout)?;
                 Ok(Self::Cuda(storage))
             }
-            (Self::Metal(lhs), Self::Metal(rhs)) => {
-                let storage = lhs.cmp(op, rhs, lhs_layout, rhs_layout)?;
-                Ok(Self::Metal(storage))
-            }
             (lhs, rhs) => {
                 // Should not happen because of the same device check above but we're defensive
                 // anyway.
@@ -169,10 +135,6 @@ impl Storage {
                 let storage = storage.reduce_op(op, layout, s)?;
                 Ok(Self::Cuda(storage))
             }
-            Self::Metal(storage) => {
-                let storage = storage.reduce_op(op, layout, s)?;
-                Ok(Self::Metal(storage))
-            }
         }
     }
 
@@ -186,10 +148,6 @@ impl Storage {
                 let storage = storage.to_dtype(layout, dtype)?;
                 Ok(Self::Cuda(storage))
             }
-            Self::Metal(storage) => {
-                let storage = storage.to_dtype(layout, dtype)?;
-                Ok(Self::Metal(storage))
-            }
         }
     }
 
@@ -203,10 +161,6 @@ impl Storage {
                 let (storage, shape) = c.cuda_fwd(storage, l)?;
                 Ok((Self::Cuda(storage), shape))
             }
-            Self::Metal(storage) => {
-                let (storage, shape) = c.metal_fwd(storage, l)?;
-                Ok((Self::Metal(storage), shape))
-            }
         }
     }
 
@@ -227,10 +181,6 @@ impl Storage {
                 let (s, shape) = c.cuda_fwd(s1, l1, s2, l2)?;
                 Ok((Self::Cuda(s), shape))
             }
-            (Self::Metal(s1), Self::Metal(s2)) => {
-                let (s, shape) = c.metal_fwd(s1, l1, s2, l2)?;
-                Ok((Self::Metal(s), shape))
-            }
             _ => unreachable!(),
         }
     }
@@ -255,55 +205,6 @@ impl Storage {
                 let (s, shape) = c.cuda_fwd(s1, l1, s2, l2, s3, l3)?;
                 Ok((Self::Cuda(s), shape))
             }
-            (Self::Metal(s1), Self::Metal(s2), Self::Metal(s3)) => {
-                let (s, shape) = c.metal_fwd(s1, l1, s2, l2, s3, l3)?;
-                Ok((Self::Metal(s), shape))
-            }
-            _ => unreachable!(),
-        }
-    }
-
-    pub(crate) fn inplace_op1(&mut self, l: &Layout, c: &dyn InplaceOp1) -> Result<()> {
-        match self {
-            Self::Cpu(storage) => c.cpu_fwd(storage, l),
-            Self::Cuda(storage) => c.cuda_fwd(storage, l),
-            Self::Metal(storage) => c.metal_fwd(storage, l),
-        }
-    }
-
-    pub(crate) fn inplace_op2(
-        &mut self,
-        l1: &Layout,
-        t2: &Self,
-        l2: &Layout,
-        c: &dyn InplaceOp2,
-    ) -> Result<()> {
-        self.same_device(t2, c.name())?;
-        match (self, t2) {
-            (Self::Cpu(s1), Self::Cpu(s2)) => c.cpu_fwd(s1, l1, s2, l2),
-            (Self::Cuda(s1), Self::Cuda(s2)) => c.cuda_fwd(s1, l1, s2, l2),
-            (Self::Metal(s1), Self::Metal(s2)) => c.metal_fwd(s1, l1, s2, l2),
-            _ => unreachable!(),
-        }
-    }
-
-    pub(crate) fn inplace_op3(
-        &mut self,
-        l1: &Layout,
-        t2: &Self,
-        l2: &Layout,
-        t3: &Self,
-        l3: &Layout,
-        c: &dyn InplaceOp3,
-    ) -> Result<()> {
-        self.same_device(t2, c.name())?;
-        self.same_device(t3, c.name())?;
-        match (self, t2, t3) {
-            (Self::Cpu(s1), Self::Cpu(s2), Self::Cpu(s3)) => c.cpu_fwd(s1, l1, s2, l2, s3, l3),
-            (Self::Cuda(s1), Self::Cuda(s2), Self::Cuda(s3)) => c.cuda_fwd(s1, l1, s2, l2, s3, l3),
-            (Self::Metal(s1), Self::Metal(s2), Self::Metal(s3)) => {
-                c.metal_fwd(s1, l1, s2, l2, s3, l3)
-            }
             _ => unreachable!(),
         }
     }
@@ -318,10 +219,6 @@ impl Storage {
                 let storage = storage.unary_impl::<B>(layout)?;
                 Ok(Self::Cuda(storage))
             }
-            Self::Metal(storage) => {
-                let storage = storage.unary_impl::<B>(layout)?;
-                Ok(Self::Metal(storage))
-            }
         }
     }
 
@@ -342,10 +239,6 @@ impl Storage {
                 let storage = lhs.binary_impl::<B>(rhs, lhs_layout, rhs_layout)?;
                 Ok(Self::Cuda(storage))
             }
-            (Self::Metal(lhs), Self::Metal(rhs)) => {
-                let storage = lhs.binary_impl::<B>(rhs, lhs_layout, rhs_layout)?;
-                Ok(Self::Metal(storage))
-            }
             (lhs, rhs) => {
                 // Should not happen because of the same device check above but we're defensive
                 // anyway.
@@ -377,10 +270,6 @@ impl Storage {
                 let s = inp.conv1d(l, kernel, kernel_l, params)?;
                 Ok(Self::Cuda(s))
             }
-            (Storage::Metal(inp), Storage::Metal(kernel)) => {
-                let s = inp.conv1d(l, kernel, kernel_l, params)?;
-                Ok(Self::Metal(s))
-            }
             (lhs, rhs) => Err(Error::DeviceMismatchBinaryOp {
                 lhs: lhs.device().location(),
                 rhs: rhs.device().location(),
@@ -390,37 +279,6 @@ impl Storage {
         }
     }
 
-    pub(crate) fn conv_transpose1d(
-        &self,
-        l: &Layout,
-        kernel: &Self,
-        kernel_l: &Layout,
-        params: &crate::conv::ParamsConvTranspose1D,
-    ) -> Result<Self> {
-        self.same_device(kernel, "conv-transpose1d")?;
-        self.same_dtype(kernel, "conv-transpose1d")?;
-        match (self, &kernel) {
-            (Storage::Cpu(inp), Storage::Cpu(kernel)) => {
-                let s = inp.conv_transpose1d(l, kernel, kernel_l, params)?;
-                Ok(Self::Cpu(s))
-            }
-            (Storage::Cuda(inp), Storage::Cuda(kernel)) => {
-                let s = inp.conv_transpose1d(l, kernel, kernel_l, params)?;
-                Ok(Self::Cuda(s))
-            }
-            (Storage::Metal(inp), Storage::Metal(kernel)) => {
-                let s = inp.conv_transpose1d(l, kernel, kernel_l, params)?;
-                Ok(Self::Metal(s))
-            }
-            (lhs, rhs) => Err(Error::DeviceMismatchBinaryOp {
-                lhs: lhs.device().location(),
-                rhs: rhs.device().location(),
-                op: "conv-transpose1d",
-            }
-            .bt()),
-        }
-    }
-
     pub(crate) fn conv2d(
         &self,
         l: &Layout,
@@ -439,10 +297,6 @@ impl Storage {
                 let s = inp.conv2d(l, kernel, kernel_l, params)?;
                 Ok(Self::Cuda(s))
             }
-            (Storage::Metal(inp), Storage::Metal(kernel)) => {
-                let s = inp.conv2d(l, kernel, kernel_l, params)?;
-                Ok(Self::Metal(s))
-            }
             (lhs, rhs) => Err(Error::DeviceMismatchBinaryOp {
                 lhs: lhs.device().location(),
                 rhs: rhs.device().location(),
@@ -470,10 +324,6 @@ impl Storage {
                 let s = inp.conv_transpose2d(l, kernel, kernel_l, params)?;
                 Ok(Self::Cuda(s))
             }
-            (Storage::Metal(inp), Storage::Metal(kernel)) => {
-                let s = inp.conv_transpose2d(l, kernel, kernel_l, params)?;
-                Ok(Self::Metal(s))
-            }
             (lhs, rhs) => Err(Error::DeviceMismatchBinaryOp {
                 lhs: lhs.device().location(),
                 rhs: rhs.device().location(),
@@ -498,10 +348,6 @@ impl Storage {
                 let storage = storage.avg_pool2d(layout, kernel_size, stride)?;
                 Ok(Self::Cuda(storage))
             }
-            Self::Metal(storage) => {
-                let storage = storage.avg_pool2d(layout, kernel_size, stride)?;
-                Ok(Self::Metal(storage))
-            }
         }
     }
 
@@ -520,10 +366,6 @@ impl Storage {
                 let storage = storage.max_pool2d(layout, kernel_size, stride)?;
                 Ok(Self::Cuda(storage))
             }
-            Self::Metal(storage) => {
-                let storage = storage.max_pool2d(layout, kernel_size, stride)?;
-                Ok(Self::Metal(storage))
-            }
         }
     }
 
@@ -537,10 +379,6 @@ impl Storage {
                 let storage = storage.upsample_nearest1d(layout, sz)?;
                 Ok(Self::Cuda(storage))
             }
-            Self::Metal(storage) => {
-                let storage = storage.upsample_nearest1d(layout, sz)?;
-                Ok(Self::Metal(storage))
-            }
         }
     }
 
@@ -554,10 +392,6 @@ impl Storage {
                 let storage = storage.upsample_nearest2d(layout, h, w)?;
                 Ok(Self::Cuda(storage))
             }
-            Self::Metal(storage) => {
-                let storage = storage.upsample_nearest2d(layout, h, w)?;
-                Ok(Self::Metal(storage))
-            }
         }
     }
 
@@ -581,10 +415,6 @@ impl Storage {
                 let storage = cond.where_cond(layout, t, layout_t, f, layout_f)?;
                 Ok(Self::Cuda(storage))
             }
-            (Self::Metal(cond), Self::Metal(t), Self::Metal(f)) => {
-                let storage = cond.where_cond(layout, t, layout_t, f, layout_f)?;
-                Ok(Self::Metal(storage))
-            }
             (_, lhs, rhs) => Err(Error::DeviceMismatchBinaryOp {
                 lhs: lhs.device().location(),
                 rhs: rhs.device().location(),
@@ -611,10 +441,6 @@ impl Storage {
                 let storage = s.gather(l, indexes, indexes_l, d)?;
                 Ok(Self::Cuda(storage))
             }
-            (Self::Metal(s), Self::Metal(indexes)) => {
-                let storage = s.gather(l, indexes, indexes_l, d)?;
-                Ok(Self::Metal(storage))
-            }
             _ => unreachable!(),
         }
     }
@@ -639,10 +465,6 @@ impl Storage {
                 let storage = s.scatter_add(l, indexes, indexes_l, source, source_l, d)?;
                 Ok(Self::Cuda(storage))
             }
-            (Self::Metal(s), Self::Metal(indexes), Self::Metal(source)) => {
-                let storage = s.scatter_add(l, indexes, indexes_l, source, source_l, d)?;
-                Ok(Self::Metal(storage))
-            }
             _ => unreachable!(),
         }
     }
@@ -667,10 +489,6 @@ impl Storage {
                 let storage = s.index_add(l, indexes, indexes_l, source, source_l, d)?;
                 Ok(Self::Cuda(storage))
             }
-            (Self::Metal(s), Self::Metal(indexes), Self::Metal(source)) => {
-                let storage = s.index_add(l, indexes, indexes_l, source, source_l, d)?;
-                Ok(Self::Metal(storage))
-            }
             _ => unreachable!(),
         }
     }
@@ -692,10 +510,6 @@ impl Storage {
                 let storage = lhs.index_select(rhs, lhs_l, rhs_l, d)?;
                 Ok(Self::Cuda(storage))
             }
-            (Self::Metal(lhs), Self::Metal(rhs)) => {
-                let storage = lhs.index_select(rhs, lhs_l, rhs_l, d)?;
-                Ok(Self::Metal(storage))
-            }
             (lhs, rhs) => Err(Error::DeviceMismatchBinaryOp {
                 lhs: lhs.device().location(),
                 rhs: rhs.device().location(),
@@ -723,10 +537,6 @@ impl Storage {
                 let storage = lhs.matmul(rhs, bmnk, lhs_layout, rhs_layout)?;
                 Ok(Self::Cuda(storage))
             }
-            (Self::Metal(lhs), Self::Metal(rhs)) => {
-                let storage = lhs.matmul(rhs, bmnk, lhs_layout, rhs_layout)?;
-                Ok(Self::Metal(storage))
-            }
             (lhs, rhs) => Err(Error::DeviceMismatchBinaryOp {
                 lhs: lhs.device().location(),
                 rhs: rhs.device().location(),
@@ -746,9 +556,6 @@ impl Storage {
         match (self, dst) {
             (Self::Cpu(src), Self::Cpu(dst)) => src.copy_strided_src(dst, dst_offset, src_l),
             (Self::Cuda(src), Self::Cuda(dst)) => Ok(src.copy_strided_src(dst, dst_offset, src_l)?),
-            (Self::Metal(src), Self::Metal(dst)) => {
-                Ok(src.copy_strided_src(dst, dst_offset, src_l)?)
-            }
             (lhs, rhs) => Err(Error::DeviceMismatchBinaryOp {
                 lhs: lhs.device().location(),
                 rhs: rhs.device().location(),
@@ -757,32 +564,4 @@ impl Storage {
             .bt()),
         }
     }
-
-    #[allow(clippy::too_many_arguments)]
-    pub(crate) fn copy2d(
-        &self,
-        dst: &mut Self,
-        d1: usize,
-        d2: usize,
-        src_s: usize,
-        dst_s: usize,
-        src_o: usize,
-        dst_o: usize,
-    ) -> Result<()> {
-        match (self, dst) {
-            (Self::Cpu(src), Self::Cpu(dst)) => src.copy2d(dst, d1, d2, src_s, dst_s, src_o, dst_o),
-            (Self::Cuda(src), Self::Cuda(dst)) => {
-                Ok(src.copy2d(dst, d1, d2, src_s, dst_s, src_o, dst_o)?)
-            }
-            (Self::Metal(src), Self::Metal(dst)) => {
-                Ok(src.copy2d(dst, d1, d2, src_s, dst_s, src_o, dst_o)?)
-            }
-            (lhs, rhs) => Err(Error::DeviceMismatchBinaryOp {
-                lhs: lhs.device().location(),
-                rhs: rhs.device().location(),
-                op: "copy2d",
-            }
-            .bt()),
-        }
-    }
 }

candle-core/src/streaming.rs

@@ -1,208 +0,0 @@
-//! StreamTensror useful for streaming ops.
-//!
-use crate::{Result, Shape, Tensor};
-
-pub trait Dim: crate::shape::Dim + Copy {}
-impl<T: crate::shape::Dim + Copy> Dim for T {}
-
-/// A stream tensor is used in streaming module. It can either contain an actual tensor or be
-/// empty.
-#[derive(Clone)]
-pub struct StreamTensor(Option<Tensor>);
-
-impl std::fmt::Debug for StreamTensor {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        match &self.0 {
-            Some(t) => write!(f, "{:?}", t.shape()),
-            None => write!(f, "Empty"),
-        }
-    }
-}
-
-impl std::convert::From<Option<Tensor>> for StreamTensor {
-    fn from(value: Option<Tensor>) -> Self {
-        Self(value)
-    }
-}
-
-impl std::convert::From<Tensor> for StreamTensor {
-    fn from(value: Tensor) -> Self {
-        Self(Some(value))
-    }
-}
-
-impl std::convert::From<()> for StreamTensor {
-    fn from(_value: ()) -> Self {
-        Self(None)
-    }
-}
-
-impl StreamTensor {
-    pub fn empty() -> Self {
-        Self(None)
-    }
-
-    pub fn from_tensor(tensor: Tensor) -> Self {
-        Self(Some(tensor))
-    }
-
-    pub fn shape(&self) -> Option<&Shape> {
-        self.0.as_ref().map(|t| t.shape())
-    }
-
-    pub fn cat2<D: Dim>(&self, rhs: &Self, dim: D) -> Result<Self> {
-        let xs = match (&self.0, &rhs.0) {
-            (Some(lhs), Some(rhs)) => {
-                let xs = Tensor::cat(&[lhs, rhs], dim)?;
-                Some(xs)
-            }
-            (Some(xs), None) | (None, Some(xs)) => Some(xs.clone()),
-            (None, None) => None,
-        };
-        Ok(Self(xs))
-    }
-
-    pub fn seq_len<D: Dim>(&self, dim: D) -> Result<usize> {
-        match &self.0 {
-            None => Ok(0),
-            Some(v) => v.dim(dim),
-        }
-    }
-
-    pub fn reset(&mut self) {
-        self.0 = None
-    }
-
-    pub fn narrow<D: Dim>(&self, dim: D, offset: usize, len: usize) -> Result<StreamTensor> {
-        let t = match &self.0 {
-            None => None,
-            Some(t) => {
-                let seq_len = t.dim(dim)?;
-                if seq_len <= offset {
-                    None
-                } else {
-                    let t = t.narrow(dim, offset, usize::min(len, seq_len - offset))?;
-                    Some(t)
-                }
-            }
-        };
-        Ok(Self(t))
-    }
-
-    /// Splits the Streaming Tensor on the time axis `dim` with the first `lhs_len` elements
-    /// returned in the first output and the remaining in the second output.
-    pub fn split<D: Dim>(&self, dim: D, lhs_len: usize) -> Result<(Self, Self)> {
-        match &self.0 {
-            None => Ok((Self::empty(), Self::empty())),
-            Some(t) => {
-                let seq_len = t.dim(dim)?;
-                let lhs_len = usize::min(seq_len, lhs_len);
-                if lhs_len == 0 {
-                    Ok((Self::empty(), t.clone().into()))
-                } else {
-                    let lhs = Self::from_tensor(t.narrow(dim, 0, lhs_len)?);
-                    let rhs_len = seq_len - lhs_len;
-                    let rhs = if rhs_len == 0 {
-                        Self::empty()
-                    } else {
-                        Self::from_tensor(t.narrow(dim, lhs_len, rhs_len)?)
-                    };
-                    Ok((lhs, rhs))
-                }
-            }
-        }
-    }
-
-    pub fn as_option(&self) -> Option<&Tensor> {
-        self.0.as_ref()
-    }
-
-    pub fn apply<M: crate::Module>(&self, m: &M) -> Result<Self> {
-        match &self.0 {
-            None => Ok(Self::empty()),
-            Some(t) => Ok(Self::from_tensor(t.apply(m)?)),
-        }
-    }
-}
-
-/// Streaming modules take as input a stream tensor and return a stream tensor. They may perform
-/// some internal buffering so that enough data has been received for the module to be able to
-/// perform some operations.
-pub trait StreamingModule {
-    // TODO: Should we also have a flush method?
-    fn step(&mut self, xs: &StreamTensor) -> Result<StreamTensor>;
-    fn reset_state(&mut self);
-}
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-pub enum BinOp {
-    Add,
-    Mul,
-    Sub,
-    Div,
-}
-
-#[derive(Debug, Clone)]
-pub struct StreamingBinOp {
-    prev_lhs: StreamTensor,
-    prev_rhs: StreamTensor,
-    pub op: BinOp,
-    pub dim: crate::D,
-}
-
-impl StreamingBinOp {
-    pub fn new(op: BinOp, dim: crate::D) -> Self {
-        Self {
-            prev_lhs: StreamTensor::empty(),
-            prev_rhs: StreamTensor::empty(),
-            op,
-            dim,
-        }
-    }
-
-    pub fn reset_state(&mut self) {
-        self.prev_lhs.reset();
-        self.prev_rhs.reset();
-    }
-
-    pub fn forward(&self, lhs: &Tensor, rhs: &Tensor) -> Result<Tensor> {
-        match self.op {
-            BinOp::Add => Tensor::add(lhs, rhs),
-            BinOp::Mul => Tensor::mul(lhs, rhs),
-            BinOp::Sub => Tensor::sub(lhs, rhs),
-            BinOp::Div => Tensor::div(lhs, rhs),
-        }
-    }
-
-    pub fn step(&mut self, lhs: &StreamTensor, rhs: &StreamTensor) -> Result<StreamTensor> {
-        let lhs = StreamTensor::cat2(&self.prev_lhs, lhs, self.dim)?;
-        let rhs = StreamTensor::cat2(&self.prev_rhs, rhs, self.dim)?;
-        let lhs_len = lhs.seq_len(self.dim)?;
-        let rhs_len = rhs.seq_len(self.dim)?;
-        let common_len = usize::min(lhs_len, rhs_len);
-        let (lhs, prev_lhs) = lhs.split(self.dim, common_len)?;
-        let (rhs, prev_rhs) = rhs.split(self.dim, common_len)?;
-        let ys = match (lhs.0, rhs.0) {
-            (Some(lhs), Some(rhs)) => {
-                let ys = self.forward(&lhs, &rhs)?;
-                StreamTensor::from_tensor(ys)
-            }
-            (None, None) => StreamTensor::empty(),
-            (lhs, rhs) => crate::bail!("INTERNAL ERROR inconsistent lhs and rhs {lhs:?} {rhs:?}"),
-        };
-        self.prev_lhs = prev_lhs;
-        self.prev_rhs = prev_rhs;
-        Ok(ys)
-    }
-}
-
-/// Simple wrapper that doesn't do any buffering.
-pub struct Map<T: crate::Module>(T);
-
-impl<T: crate::Module> StreamingModule for Map<T> {
-    fn reset_state(&mut self) {}
-
-    fn step(&mut self, xs: &StreamTensor) -> Result<StreamTensor> {
-        xs.apply(&self.0)
-    }
-}

candle-core/src/strided_index.rs

@@ -32,11 +32,14 @@ impl<'a> StridedIndex<'a> {
     }
 }
 
-impl Iterator for StridedIndex<'_> {
+impl<'a> Iterator for StridedIndex<'a> {
     type Item = usize;
 
     fn next(&mut self) -> Option<Self::Item> {
-        let storage_index = self.next_storage_index?;
+        let storage_index = match self.next_storage_index {
+            None => return None,
+            Some(storage_index) => storage_index,
+        };
         let mut updated = false;
         let mut next_storage_index = storage_index;
         for ((multi_i, max_i), stride_i) in self

candle-core/src/tensor_cat.rs

@@ -1,303 +0,0 @@
-use crate::{shape::Dim, Context, Error, Result, Shape, Tensor};
-
-impl Tensor {
-    /// Concatenates two or more tensors along a particular dimension.
-    ///
-    /// All tensors must of the same rank, and the output will have
-    /// the same rank
-    ///
-    /// ```rust
-    /// # use candle_core::{Tensor, DType, Device};
-    /// let a = Tensor::zeros((2, 3), DType::F32, &Device::Cpu)?;
-    /// let b = Tensor::zeros((2, 3), DType::F32, &Device::Cpu)?;
-    ///
-    /// let c = Tensor::cat(&[&a, &b], 0)?;
-    /// assert_eq!(c.shape().dims(), &[4, 3]);
-    ///
-    /// let c = Tensor::cat(&[&a, &b], 1)?;
-    /// assert_eq!(c.shape().dims(), &[2, 6]);
-    /// # Ok::<(), candle_core::Error>(())
-    /// ```
-    pub fn cat<A: AsRef<Tensor>, D: Dim>(args: &[A], dim: D) -> Result<Self> {
-        if args.is_empty() {
-            Err(Error::OpRequiresAtLeastOneTensor { op: "cat" }.bt())?
-        }
-        let arg0 = args[0].as_ref();
-        if args.len() == 1 {
-            return Ok(arg0.clone());
-        }
-        let dim = dim.to_index(arg0.shape(), "cat")?;
-        for arg in args {
-            arg.as_ref().check_dim(dim, "cat")?;
-        }
-        for (arg_idx, arg) in args.iter().enumerate() {
-            let arg = arg.as_ref();
-            if arg0.rank() != arg.rank() {
-                Err(Error::UnexpectedNumberOfDims {
-                    expected: arg0.rank(),
-                    got: arg.rank(),
-                    shape: arg.shape().clone(),
-                }
-                .bt())?
-            }
-            for (dim_idx, (v1, v2)) in arg0
-                .shape()
-                .dims()
-                .iter()
-                .zip(arg.shape().dims().iter())
-                .enumerate()
-            {
-                if dim_idx != dim && v1 != v2 {
-                    Err(Error::ShapeMismatchCat {
-                        dim: dim_idx,
-                        first_shape: arg0.shape().clone(),
-                        n: arg_idx + 1,
-                        nth_shape: arg.shape().clone(),
-                    }
-                    .bt())?
-                }
-            }
-        }
-        let all_contiguous = args.iter().all(|v| v.as_ref().is_contiguous());
-        if all_contiguous {
-            Self::cat_contiguous(args, dim)
-        } else if dim == 0 {
-            Self::cat0(args)
-        } else {
-            let args: Vec<Tensor> = args
-                .iter()
-                .map(|a| a.as_ref().transpose(0, dim))
-                .collect::<Result<Vec<_>>>()?;
-            let cat = Self::cat0(&args)?;
-            cat.transpose(0, dim)
-        }
-    }
-
-    fn cat0<A: AsRef<Tensor>>(args: &[A]) -> Result<Self> {
-        if args.is_empty() {
-            Err(Error::OpRequiresAtLeastOneTensor { op: "cat" }.bt())?
-        }
-        let arg0 = args[0].as_ref();
-        if args.len() == 1 {
-            return Ok(arg0.clone());
-        }
-        let rank = arg0.rank();
-        let device = arg0.device();
-        let dtype = arg0.dtype();
-        let first_dims = arg0.shape().dims();
-        let mut cat_dims = first_dims.to_vec();
-        cat_dims[0] = 0;
-        let mut offsets = vec![0usize];
-        for (arg_idx, arg) in args.iter().enumerate() {
-            let arg = arg.as_ref();
-            if arg.dtype() != dtype {
-                Err(Error::DTypeMismatchBinaryOp {
-                    lhs: dtype,
-                    rhs: arg.dtype(),
-                    op: "cat",
-                }
-                .bt())?
-            }
-            if arg.device().location() != device.location() {
-                Err(Error::DeviceMismatchBinaryOp {
-                    lhs: device.location(),
-                    rhs: arg.device().location(),
-                    op: "cat",
-                }
-                .bt())?
-            }
-            if rank != arg.rank() {
-                Err(Error::UnexpectedNumberOfDims {
-                    expected: rank,
-                    got: arg.rank(),
-                    shape: arg.shape().clone(),
-                }
-                .bt())?
-            }
-            for (dim_idx, (v1, v2)) in arg0
-                .shape()
-                .dims()
-                .iter()
-                .zip(arg.shape().dims().iter())
-                .enumerate()
-            {
-                if dim_idx == 0 {
-                    cat_dims[0] += v2;
-                }
-                if dim_idx != 0 && v1 != v2 {
-                    Err(Error::ShapeMismatchCat {
-                        dim: dim_idx,
-                        first_shape: arg0.shape().clone(),
-                        n: arg_idx + 1,
-                        nth_shape: arg.shape().clone(),
-                    }
-                    .bt())?
-                }
-            }
-            let next_offset = offsets.last().context("empty offsets")? + arg.elem_count();
-            offsets.push(next_offset);
-        }
-        let shape = Shape::from(cat_dims);
-        let op = crate::op::BackpropOp::new(args, |args| crate::op::Op::Cat(args, 0));
-        let mut storage = unsafe { device.alloc_uninit(&shape, dtype)? };
-        for (arg, &offset) in args.iter().zip(offsets.iter()) {
-            let arg = arg.as_ref();
-            arg.storage()
-                .copy_strided_src(&mut storage, offset, arg.layout())?;
-        }
-        Ok(crate::tensor::from_storage(storage, shape, op, false))
-    }
-
-    fn cat_contiguous<A: AsRef<Tensor>>(args: &[A], dim: usize) -> Result<Self> {
-        if args.is_empty() {
-            Err(Error::OpRequiresAtLeastOneTensor { op: "cat" }.bt())?
-        }
-        let arg0 = args[0].as_ref();
-        if args.len() == 1 {
-            return Ok(arg0.clone());
-        }
-        let rank = arg0.rank();
-        let device = arg0.device();
-        let dtype = arg0.dtype();
-        let first_dims = arg0.shape().dims();
-        let mut cat_dims = first_dims.to_vec();
-        cat_dims[dim] = 0;
-        for (arg_idx, arg) in args.iter().enumerate() {
-            let arg = arg.as_ref();
-            if arg.dtype() != dtype {
-                Err(Error::DTypeMismatchBinaryOp {
-                    lhs: dtype,
-                    rhs: arg.dtype(),
-                    op: "cat",
-                }
-                .bt())?
-            }
-            if arg.device().location() != device.location() {
-                Err(Error::DeviceMismatchBinaryOp {
-                    lhs: device.location(),
-                    rhs: arg.device().location(),
-                    op: "cat",
-                }
-                .bt())?
-            }
-            if rank != arg.rank() {
-                Err(Error::UnexpectedNumberOfDims {
-                    expected: rank,
-                    got: arg.rank(),
-                    shape: arg.shape().clone(),
-                }
-                .bt())?
-            }
-            for (dim_idx, (v1, v2)) in arg0
-                .shape()
-                .dims()
-                .iter()
-                .zip(arg.shape().dims().iter())
-                .enumerate()
-            {
-                if dim_idx == dim {
-                    cat_dims[dim] += v2;
-                }
-                if dim_idx != dim && v1 != v2 {
-                    Err(Error::ShapeMismatchCat {
-                        dim: dim_idx,
-                        first_shape: arg0.shape().clone(),
-                        n: arg_idx + 1,
-                        nth_shape: arg.shape().clone(),
-                    }
-                    .bt())?
-                }
-            }
-        }
-        let cat_target_dim_len = cat_dims[dim];
-        let block_size: usize = cat_dims.iter().skip(1 + dim).product();
-        let shape = Shape::from(cat_dims);
-        let op = crate::op::BackpropOp::new(args, |args| crate::op::Op::Cat(args, dim));
-        let mut storage = unsafe { device.alloc_uninit(&shape, dtype)? };
-        let mut dst_o = 0;
-        for arg in args.iter() {
-            let arg = arg.as_ref();
-            let arg_dims = arg.shape().dims();
-            let d1: usize = arg_dims.iter().take(dim).product();
-            let d2 = block_size * arg_dims[dim];
-            let dst_s = block_size * cat_target_dim_len;
-            let src_o = arg.layout().start_offset();
-            arg.storage().copy2d(
-                &mut storage,
-                d1,
-                d2,
-                /* src_s */ d2,
-                dst_s,
-                src_o,
-                dst_o,
-            )?;
-            dst_o += d2;
-        }
-        Ok(crate::tensor::from_storage(storage, shape, op, false))
-    }
-
-    /// Set the values on `self` using values from `src`. The copy starts at the specified
-    /// `offset` for the target dimension `dim` on `self`.
-    /// `self` and `src` must have the same shape except on dimension `dim` where the `self` size
-    /// has to be greater than or equal to `offset` plus the `src` size.
-    ///
-    /// Note that this modifies `self` in place and as such is not compatibel with
-    /// back-propagation.  
-    pub fn slice_set<D: Dim>(&self, src: &Self, dim: D, offset: usize) -> Result<()> {
-        let dim = dim.to_index(self.shape(), "slice-set")?;
-        if !self.is_contiguous() || !src.is_contiguous() {
-            Err(Error::RequiresContiguous { op: "slice-set" }.bt())?
-        }
-        if self.same_storage(src) {
-            crate::bail!("cannot use slice_set when self and src share their storage")
-        }
-        if self.dtype() != src.dtype() {
-            Err(Error::DTypeMismatchBinaryOp {
-                lhs: self.dtype(),
-                rhs: src.dtype(),
-                op: "slice-set",
-            }
-            .bt())?
-        }
-        if self.device().location() != src.device().location() {
-            Err(Error::DeviceMismatchBinaryOp {
-                lhs: self.device().location(),
-                rhs: src.device().location(),
-                op: "slice-set",
-            }
-            .bt())?
-        }
-        if self.rank() != src.rank() {
-            Err(Error::UnexpectedNumberOfDims {
-                expected: self.rank(),
-                got: src.rank(),
-                shape: self.shape().clone(),
-            }
-            .bt())?
-        }
-        for (dim_idx, (v1, v2)) in self.dims().iter().zip(src.dims().iter()).enumerate() {
-            if dim_idx == dim && *v2 + offset > *v1 {
-                crate::bail!("shape mismatch on target dim, dst: {v1}, src: {v2} + {offset}")
-            }
-            if dim_idx != dim && v1 != v2 {
-                crate::bail!("shape mismatch on dim {dim_idx}, {v1} <> {v2}")
-            }
-        }
-        let block_size: usize = src.dims().iter().skip(1 + dim).product();
-        let d1: usize = src.dims().iter().take(dim).product();
-        let d2 = block_size * src.dims()[dim];
-        let dst_o = self.layout().start_offset() + offset * block_size;
-        let src_o = src.layout().start_offset();
-        src.storage().copy2d(
-            &mut self.storage_mut(),
-            d1,
-            d2,
-            /* src_s */ d2,
-            /* dst_s */ block_size * self.dims()[dim],
-            src_o,
-            dst_o,
-        )?;
-
-        Ok(())
-    }
-}

candle-core/src/test_utils.rs

@@ -4,7 +4,7 @@ use crate::{Result, Tensor};
 macro_rules! test_device {
     // TODO: Switch to generating the two last arguments automatically once concat_idents is
     // stable. https://github.com/rust-lang/rust/issues/29599
-    ($fn_name: ident, $test_cpu: ident, $test_cuda: ident, $test_metal: ident) => {
+    ($fn_name: ident, $test_cpu: ident, $test_cuda: ident) => {
         #[test]
         fn $test_cpu() -> Result<()> {
             $fn_name(&Device::Cpu)
@@ -15,12 +15,6 @@ macro_rules! test_device {
         fn $test_cuda() -> Result<()> {
             $fn_name(&Device::new_cuda(0)?)
         }
-
-        #[cfg(feature = "metal")]
-        #[test]
-        fn $test_metal() -> Result<()> {
-            $fn_name(&Device::new_metal(0)?)
-        }
     };
 }
 

candle-core/src/utils.rs

@@ -1,4 +1,3 @@
-//! Useful functions for checking features.
 use std::str::FromStr;
 
 pub fn get_num_threads() -> usize {
@@ -24,10 +23,6 @@ pub fn cuda_is_available() -> bool {
     cfg!(feature = "cuda")
 }
 
-pub fn metal_is_available() -> bool {
-    cfg!(feature = "metal")
-}
-
 pub fn with_avx() -> bool {
     cfg!(target_feature = "avx")
 }

candle-core/src/variable.rs

@@ -34,14 +34,9 @@ impl Var {
         Ok(Self(inner))
     }
 
-    // Convert a tensor to a variable, if the tensor is already a variable then it is returned as is.
     pub fn from_tensor(t: &Tensor) -> Result<Self> {
-        if t.is_variable() {
-            Ok(Self(t.clone()))
-        } else {
-            let inner = t.make_var()?;
-            Ok(Self(inner))
-        }
+        let inner = t.make_var()?;
+        Ok(Self(inner))
     }
 
     pub fn rand_f64<S: Into<Shape>>(
@@ -112,10 +107,6 @@ impl Var {
         Ok(Self(inner))
     }
 
-    pub fn as_detached_tensor(&self) -> Tensor {
-        self.0.detach()
-    }
-
     pub fn as_tensor(&self) -> &Tensor {
         &self.0
     }

candle-core/tests/conv_tests.rs

@@ -13,14 +13,6 @@ res = torch.nn.functional.conv1d(t, w)
 print(res.flatten())
 res = torch.nn.functional.conv1d(t, w, padding=1)
 print(res.flatten())
-
-w_t = w.transpose(0, 1)
-res = torch.nn.functional.conv_transpose1d(t, w_t)
-print(res.shape)
-print(res)
-res = torch.nn.functional.conv_transpose1d(t, w_t, groups=2)
-print(res.shape)
-print(res)
 */
 fn conv1d(dev: &Device) -> Result<()> {
     let t = Tensor::new(
@@ -53,31 +45,6 @@ fn conv1d(dev: &Device) -> Result<()> {
         test_utils::to_vec1_round(&res.flatten_all()?, 4)?,
         [2.4509, 2.6357, -1.3336, 4.1393, 0.5657, 1.8091, -1.1784, 3.5675, 0.5069, 3.3352]
     );
-
-    let w = w.transpose(0, 1)?;
-    // The CPU kernels applied in the contiguous and non contiguous cases are different.
-    for w in [w.clone(), w.contiguous()?] {
-        let res = t.conv_transpose1d(&w, 0, 0, 1, 1, 1)?;
-        assert_eq!(res.dims(), [1, 2, 7]);
-        assert_eq!(
-            test_utils::to_vec1_round(&res.flatten_all()?, 4)?,
-            [
-                0.0699, -1.2899, 8.3018, 5.5873, 2.4572, -2.6143, -0.0706, 1.8765, 4.8318, 1.1538,
-                4.7076, -5.9745, -0.8276, 1.621
-            ],
-        );
-        let res = t.conv_transpose1d(&w, 0, 0, 1, 1, 2)?;
-        assert_eq!(res.dims(), [1, 4, 7]);
-        assert_eq!(
-            test_utils::to_vec2_round(&res.squeeze(0)?, 4)?,
-            [
-                [-1.5596, -1.8099, 2.0407, 4.8764, -0.1743, -0.735, -0.7819],
-                [0.7816, 3.8152, -0.5926, 2.2515, -5.1844, -0.3157, 1.4721],
-                [1.6295, 0.52, 6.2611, 0.7109, 2.6315, -1.8793, 0.7113],
-                [1.0949, 1.0166, 1.7464, 2.4561, -0.79, -0.5119, 0.1488]
-            ]
-        );
-    }
     Ok(())
 }
 
@@ -135,7 +102,7 @@ fn conv2d(dev: &Device) -> Result<()> {
             0.6466, -0.5042, -0.0603, -1.6538, -1.2429, 1.8357, 1.6052, -1.3844, 0.3323, -1.3712,
             0.9634, -0.4799, -0.6451, -0.0840, -1.4247, 0.5512, -0.1747, -0.5509, -0.3742, 0.3790,
             -0.4431, -0.4720, -0.7890, 0.2620, 0.7875, 0.5377, -0.6779, -0.8088, 1.9098, 1.2006,
-            -0.8, -0.4983, 1.5480, 0.8265, -0.1025, 0.5138, 0.5748, 0.3821, -0.4607, 0.0085,
+            -0.8000, -0.4983, 1.5480, 0.8265, -0.1025, 0.5138, 0.5748, 0.3821, -0.4607, 0.0085,
         ],
         dev,
     )?;
@@ -163,9 +130,7 @@ fn conv2d(dev: &Device) -> Result<()> {
             10.389, 3.6023, -4.2808, 0.2672, 5.3646, -5.2023, -2.1955, -9.4075
         ]
     );
-
     let res = t.conv_transpose2d(&w.transpose(0, 1)?, 0, 0, 1, 1)?;
-
     assert_eq!(res.dims(), [1, 2, 7, 7]);
     assert_eq!(
         test_utils::to_vec3_round(&res.i(0)?, 4)?,
@@ -190,7 +155,6 @@ fn conv2d(dev: &Device) -> Result<()> {
             ]
         ]
     );
-
     // Dilations.
     let res = t.conv2d(&w, 0, 1, 2, 1)?;
     assert_eq!(res.dims(), [1, 2, 1, 1]);
@@ -229,7 +193,6 @@ fn conv2d(dev: &Device) -> Result<()> {
             ]
         ]
     );
-
     Ok(())
 }
 
@@ -276,13 +239,13 @@ fn conv2d_small(dev: &Device) -> Result<()> {
     assert_eq!(
         test_utils::to_vec1_round(&res.flatten_all()?, 4)?,
         [
-            0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.1640,
-            -0.0111, -0.1742, 0.0, 0.0, 0.0, 0.0, 2.6437, -2.0268, 1.1823, 0.0, 0.0, 0.0, 0.0,
-            3.2855, -1.0324, 0.2539, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
-            0.0, 0.0, 0.0, 0.0
+            0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000,
+            0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.1640, -0.0111, -0.1742, 0.0000, 0.0000,
+            0.0000, 0.0000, 2.6437, -2.0268, 1.1823, 0.0000, 0.0000, 0.0000, 0.0000, 3.2855,
+            -1.0324, 0.2539, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000,
+            0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000
         ]
     );
-
     let res = t.conv_transpose2d(&w.transpose(0, 1)?, 0, 0, 1, 1)?;
     assert_eq!(res.dims(), [1, 1, 3, 3]);
     assert_eq!(
@@ -384,7 +347,6 @@ print(w.grad.shape)
 print(w.grad[0])
 */
 fn conv2d_grad(dev: &Device) -> Result<()> {
-    // conv-transposes are not implemented for metal
     use candle_core::Var;
     let t = Var::from_slice(
         &[
@@ -397,7 +359,7 @@ fn conv2d_grad(dev: &Device) -> Result<()> {
             0.6466, -0.5042, -0.0603, -1.6538, -1.2429, 1.8357, 1.6052, -1.3844, 0.3323, -1.3712,
             0.9634, -0.4799, -0.6451, -0.0840, -1.4247, 0.5512, -0.1747, -0.5509, -0.3742, 0.3790,
             -0.4431, -0.4720, -0.7890, 0.2620, 0.7875, 0.5377, -0.6779, -0.8088, 1.9098, 1.2006,
-            -0.8, -0.4983, 1.5480, 0.8265, -0.1025, 0.5138, 0.5748, 0.3821, -0.4607, 0.0085,
+            -0.8000, -0.4983, 1.5480, 0.8265, -0.1025, 0.5138, 0.5748, 0.3821, -0.4607, 0.0085,
         ],
         (1, 4, 5, 5),
         dev,
@@ -517,348 +479,17 @@ fn conv2d_grad(dev: &Device) -> Result<()> {
             ]
         ]
     );
-
-    // Replicate the issue from https://github.com/huggingface/candle/issues/1212
-    let res = t.i((.., .., 0..4, 0..4))?.conv2d(&w, 0, 2, 1, 1)?;
-    let loss = res.sqr()?.sum_all()?;
-    assert_eq!(test_utils::to_vec0_round(&loss, 2)?, 21.12f32);
-    let grads = loss.backward()?;
-    let grad_t = grads.get(&t).unwrap();
-    let grad_w = grads.get(&w).unwrap();
-    assert_eq!(grad_t.dims(), [1, 4, 5, 5]);
-    assert_eq!(grad_w.dims(), [2, 4, 3, 3]);
-    assert_eq!(
-        test_utils::to_vec3_round(&grad_t.i(0)?, 2)?,
-        [
-            [
-                [9.29, -7.03, 7.87, 0.0, 0.0],
-                [-1.8, -7.82, 5.9, 0.0, 0.0],
-                [-3.12, 4.49, 5.52, 0.0, 0.0],
-                [0.0, 0.0, 0.0, 0.0, 0.0],
-                [0.0, 0.0, 0.0, 0.0, 0.0]
-            ],
-            [
-                [21.73, 3.39, 4.77, 0.0, 0.0],
-                [8.25, 3.73, 27.61, 0.0, 0.0],
-                [-20.55, -5.61, -2.77, 0.0, 0.0],
-                [0.0, 0.0, 0.0, 0.0, 0.0],
-                [0.0, 0.0, 0.0, 0.0, 0.0]
-            ],
-            [
-                [-8.98, 9.91, -7.15, 0.0, 0.0],
-                [4.93, -0.33, 4.56, 0.0, 0.0],
-                [-6.7, -5.76, -8.05, 0.0, 0.0],
-                [0.0, 0.0, 0.0, 0.0, 0.0],
-                [0.0, 0.0, 0.0, 0.0, 0.0]
-            ],
-            [
-                [23.54, 6.98, -10.0, 0.0, 0.0],
-                [9.65, 6.18, 18.72, 0.0, 0.0],
-                [3.29, -5.27, 0.79, 0.0, 0.0],
-                [0.0, 0.0, 0.0, 0.0, 0.0],
-                [0.0, 0.0, 0.0, 0.0, 0.0]
-            ]
-        ]
-    );
-    assert_eq!(
-        test_utils::to_vec3_round(&grad_w.i(0)?, 2)?,
-        [
-            [
-                [-3.47, 7.44, 0.66],
-                [12.89, -3.4, -9.29],
-                [-14.16, -0.83, 7.14]
-            ],
-            [
-                [-3.23, 5.37, -3.02],
-                [-2.12, -11.24, 1.94],
-                [6.97, 7.2, 2.99]
-            ],
-            [
-                [-4.04, -3.31, 4.87],
-                [-6.68, -5.68, 1.73],
-                [-5.54, 4.32, 0.52]
-            ],
-            [[-4.72, 1.5, 4.72], [3.79, 4.04, 6.76], [-4.6, 5.8, 6.93]]
-        ]
-    );
-
-    // Conv Transpose 2d Test
-    //tested against following python
-
-    // import torch
-    // torch.manual_seed(4242)
-    // padding = 4
-    // outpadding = 2
-    // dilation = 3
-    // stride = 3
-    // input = torch.randn((1, 4, 7, 5), requires_grad=True)
-    // kernel = torch.randn((4, 2, 3, 5), requires_grad=True)
-    // print("input", input.flatten())
-    // print("kernel", kernel.flatten())
-    // res = torch.nn.functional.conv_transpose2d(
-    //     input,
-    //     kernel,
-    //     stride=stride,
-    //     padding=padding,
-    //     dilation=dilation,
-    //     output_padding=outpadding,
-    // )
-    // res.retain_grad()
-    // print(res.shape)
-    // loss = (res**2).sum()
-    // print(loss)
-    // loss.backward()
-    // print(input.grad.shape)
-    // print("input grad", torch.round(input.grad, decimals=1))
-    // print(kernel.grad.shape)
-    // print("kernel grad", torch.round(kernel.grad.flatten(), decimals=1))
-
-    let padding = 4;
-    let outpadding = 2;
-    let dilation = 3;
-    let stride = 3;
-
-    let t = Var::from_slice(
-        &[
-            0.4056_f32, -0.8689, -0.0773, -1.5630, -2.8012, -1.5059, 0.3972, 1.0852, 0.4997,
-            3.0616, 1.6541, 0.0964, -0.8338, -1.6523, -0.8323, -0.1699, 0.0823, 0.3526, 0.6843,
-            0.2395, 1.2279, -0.9287, -1.7030, 0.1370, 0.6047, 0.3770, -0.6266, 0.3529, 2.2013,
-            -0.6836, 0.2477, 1.3127, -0.2260, 0.2622, -1.2974, -0.8140, -0.8404, -0.3490, 0.0130,
-            1.3123, 1.7569, -0.3956, -1.8255, 0.1727, -0.3538, 2.6941, 1.0529, 0.4219, -0.2071,
-            1.1586, 0.4717, 0.3865, -0.5690, -0.5010, -0.1310, 0.7796, 0.6630, -0.2021, 2.6090,
-            0.2049, 0.6466, -0.5042, -0.0603, -1.6538, -1.2429, 1.8357, 1.6052, -1.3844, 0.3323,
-            -1.3712, 0.9634, -0.4799, -0.6451, -0.0840, -1.4247, 0.5512, -0.1747, -0.5509, -0.3742,
-            0.3790, -0.4431, -0.4720, -0.7890, 0.2620, 0.5411, -1.1715, -2.4997, 2.3249, -0.8912,
-            -0.4733, -0.5701, -2.8888, -1.4112, -0.5471, -0.9234, -1.1660, 0.4189, -0.7465,
-            -0.6473, 0.1402, 0.7875, 0.5377, -0.6779, -0.8088, -0.4864, -0.2312, 0.9279, 0.1264,
-            1.5480, 0.8265, -0.1025, 0.5138, -0.2512, 0.1576, 1.2705, 0.3641, -0.9325, 0.6451,
-            -0.8537, 0.2378, 0.1794, 0.2752, -0.3687, -1.1149, -0.1410, -0.5829, -0.0892, 1.4258,
-            -2.2789, 0.5270, 0.1825, 1.7007, -0.5263, -0.2954, 0.4440, 0.5537, 0.3492, 0.6186,
-            1.6475, 0.2219,
-        ],
-        (1, 4, 7, 5),
-        dev,
-    )?;
-
-    #[rustfmt::skip]
-    let w = Var::from_slice(
-        &[
-            -1.1744_f32, 0.3266, 2.5893, 1.0142, 0.1763, 0.7752, 0.6604, 0.2029, -0.2145, 0.7234,
-            -0.3441, -1.5400, -0.6333, 0.6613, 0.2083, 0.6230, -1.7002, 0.3393, 0.4049, 1.0762,
-            0.2723, 1.4181, 0.0029, -0.2122, 1.7668, 1.4168, 0.3320, -0.2719, 0.7932, -0.7204,
-            0.4447, 0.1211, 0.5908, 1.0089, -0.1646, 1.8033, -0.6286, 0.2016, -0.3370, 1.2555,
-            0.8009, -0.6488, -0.4652, -1.5685, 1.5860, 0.5583, 0.4623, 0.6026, 0.8828, 2.4990,
-            0.6811, -0.3369, 1.3320, 1.7669, -1.1067, 1.2958, -0.9415, -0.9655, -0.4462, 0.7181,
-            0.5181, -1.1658, -1.8467, -0.7763, 1.2769, 0.8651, 0.9890, 1.5092, 0.7207, -0.8481,
-            0.7417, 0.3375, -1.2685, 1.4572, 1.0915, 0.1093, -0.8550, -0.5831, -0.6309, -0.2509,
-            0.5220, -0.0914, 0.7900, 0.1096, 0.3258, 0.2723, -1.0942, -0.3393, -0.1653, 0.5732,
-            -0.8014, 1.8194, -1.9023, 0.2127, 1.8636, -0.8979, 0.1927, -0.2778, 0.3105, 0.0071,
-            -1.1823, 0.2476, -0.7178, -1.3821, 1.0769, -0.4376, -0.9967, -0.1227, 1.6197, -1.0604,
-            0.1372, 0.8141, -0.6163, 0.7304, -0.8285, 2.0636, -0.7176, 0.2495, -0.2581, -0.4478,
-        ],
-        (4, 2, 3, 5),
-        dev,
-    )?;
-    let res = t.conv_transpose2d(&w, padding, outpadding, stride, dilation)?;
-    let loss = res.sqr()?.sum_all()?;
-    assert_eq!(test_utils::to_vec0_round(&loss, 0)?, 2904.0);
-    let grads = loss.backward()?;
-
-    let grad_t = grads.get(&t).unwrap();
-    let grad_w = grads.get(&w).unwrap();
-    assert_eq!(grad_t.dims(), [1, 4, 7, 5]);
-    assert_eq!(grad_w.dims(), [4, 2, 3, 5]);
-
-    assert_eq!(
-        test_utils::to_vec1_round(&grad_w.flatten_all()?, 1)?,
-        [
-            // torch gets 89.1
-            -89.0, -135.3, 136.7, 102.0, -53.4, 117.9, 118.6, -43.9, -218.0, -58.5, -114.3, -150.0,
-            -15.6, 172.1, 66.3, -64.3, -27.9, -19.8, 31.7, 62.1, 5.5, 92.6, 28.2, -29.6, 55.9,
-            52.7, -72.7, -119.8, 53.8, -25.5, 128.8, 19.3, 68.0, 190.9, -64.1, -86.2, -111.2,
-            106.6, -67.7, 37.8, 115.9, 50.4, -77.7, -54.9, 22.3, -4.6, 89.8, 61.7, 122.4, 192.6,
-            -27.8, -104.6, 57.0, 166.4, 27.1, 6.1, 18.7, -93.2, 31.5, 168.2, -3.7, -99.5, -55.5,
-            -10.8, 17.5, 20.8, 16.9, 43.8, 42.0, -89.2, 18.8, -9.6, -84.1, 212.6, 19.7, -50.0,
-            -52.0, -40.0, -166.6, -73.2, -10.8, -73.3, 31.5, -23.4, -79.3, -27.0, -84.4, -42.9,
-            -20.3, 51.8, -16.7, 76.3, -120.5, -65.8, 96.5, -10.7, -45.9, -88.1, 65.4, -7.0, -1.5,
-            92.8, -25.1, -114.2, -5.8, -14.8, -51.2, -20.7, 54.2, -79.8, 47.7, -29.2, -8.8, 53.5,
-            -28.4, 85.0, -18.3, 107.0, 28.3, -71.8
-        ]
-    );
-
-    assert_eq!(
-        test_utils::to_vec3_round(&grad_t.i(0)?, 1)?,
-        [
-            [
-                [32.3, -41.6, -24.0, 14.1, 17.6],
-                [-11.8, 72.5, 87.6, 46.4, 61.5],
-                [115.0, 108.5, -48.6, -63.4, -50.0],
-                [51.3, 5.4, 31.3, 91.1, -30.9],
-                [52.7, 92.8, -68.0, -47.0, 83.0],
-                // pytorch gets -107.1
-                [-10.2, -107.0, -5.4, 213.1, -31.4],
-                [-2.4, 65.1, 9.2, -146.2, -24.2]
-            ],
-            [
-                [-72.6, -63.9, -61.9, 45.3, 33.0],
-                [79.3, -0.5, -26.2, 78.2, 42.7],
-                [90.9, 141.6, 40.1, -62.7, 37.0],
-                [32.8, 198.2, -0.8, -31.1, 27.3],
-                // torch gets 48.0
-                [34.5, 34.9, -47.9, 127.6, -12.3],
-                [-61.4, -3.2, -2.9, -10.9, -16.6],
-                [74.6, 60.1, -68.9, 34.5, -50.4]
-            ],
-            [
-                [37.5, -56.9, -43.6, -13.5, -9.9],
-                [40.0, 97.3, 28.6, 14.2, -30.1],
-                [-22.3, -126.3, -68.8, -8.2, 26.1],
-                [-32.9, 37.3, 108.5, -54.8, 29.6],
-                [34.9, -176.9, -125.0, -28.3, -13.9],
-                [-54.9, 142.6, 62.1, -80.4, -65.6],
-                [7.4, -91.1, -67.6, 35.0, 39.7]
-            ],
-            [
-                [-57.2, -40.9, -10.1, 32.6, 29.4],
-                [18.7, -18.0, 29.5, -1.2, 59.2],
-                [-14.0, -74.4, 19.8, -117.0, 58.2],
-                [-21.8, 163.5, -71.1, -99.0, 80.9],
-                [-58.9, -10.9, 93.8, -139.6, 98.0],
-                // torch gets 54.5
-                [-54.4, 135.3, 6.0, -79.1, 134.6],
-                [27.5, -76.0, 43.4, -2.8, -7.8]
-            ]
-        ]
-    );
-
-    // Test the same, but then with the following properties, t & w are unmodified.
-    let padding = 1;
-    let outpadding = 1;
-    let dilation = 1;
-    let stride = 2;
-
-    let res = t.conv_transpose2d(&w, padding, outpadding, stride, dilation)?;
-    let loss = res.sqr()?.sum_all()?;
-    assert_eq!(test_utils::to_vec0_round(&loss, 0)?, 3627.0); // torch gives 3626.8560
-
-    let grads = loss.backward()?;
-
-    let grad_t = grads.get(&t).unwrap();
-    let grad_w = grads.get(&w).unwrap();
-    assert_eq!(grad_t.dims(), [1, 4, 7, 5]);
-    assert_eq!(grad_w.dims(), [4, 2, 3, 5]);
-
-    #[rustfmt::skip]
-    assert_eq!(
-        test_utils::to_vec3_round(&grad_t.i(0)?, 1)?,
-        [
-            [
-                [  13.2,  -40.7,   -9.7,  -47.3,  -82.7],
-                [ -98.2,    9.7,   57.7,   -6.2,  180.7],
-                [ 100.2,   24.1,    3.7, -100.5,  -48.1],
-                [  -0.3,   13.5,   -2.9,   80.0,  -49.8],
-                [  47.2,  -25.6,  -74.4,   61.2,  -18.4],
-                [   4.6,  -69.5,   27.9,   66.5,  -88.1],
-                 // 4th column on next row; torch is 4.2
-                [ -12.0,   79.2,  -40.0,    4.1,  -97.1],
-            ],
-            [
-                [ -42.2,  -36.5,  -51.1,    7.5,   32.3],
-                [  74.1,  -44.6,  -68.8,   19.5,    7.7],
-                [ 137.1,   54.2,  153.8,  -58.0,   45.5],
-                [  24.4,  -56.8,    9.7,  -41.0,  -14.5],
-                [  -3.7,   72.6,    8.3,  134.8,   40.5],
-                [  43.2,  -56.9,  -47.5,  -89.4,  -95.4],
-                [  68.2,  108.1,  -80.0,   57.0, -121.1]
-            ],
-            [
-                [  31.1,  -11.4,  -34.8,   33.1,  -44.2],
-                [  29.4,  -31.6,  -40.2,   13.7,   13.1],
-                [  -0.8,  -83.8,   -7.8,  -17.3,   78.2],
-                [  12.0, -118.7,  137.5,  -76.7,   50.8],
-                [ -28.7, -114.2,   -3.7,  -96.3,  -13.8],
-                [ -31.8,   28.5,  -14.3,    4.6,   13.4],
-                [  28.0,   -0.2,  -38.9,  -29.7,  -59.0]
-            ],
-            [
-                [ -16.8,   38.5,   15.5,   26.6,   48.9],
-                [  14.5,   49.6,  -24.8,   65.6,   61.7],
-                [  22.1,  -64.7,   -4.3,  -51.0,   36.3],
-                [  31.0,  -88.9,   47.1, -123.5,   -3.8],
-                [ -14.8,  -39.8,  128.2, -110.3,   42.6],
-                // 1st column on next row; torch is -7.2
-                [  -7.1,   95.3,  -21.3,  -58.7,  -13.9], 
-                [  26.9,   21.3,   16.1,   70.3,   32.1]
-            ]
-        ]
-    );
-
-    #[rustfmt::skip]
-    assert_eq!(
-        test_utils::to_vec1_round(&grad_w.flatten_all()?, 1)?,
-        [
-            // 2nd value; torch gets -3.2, 3rd value; torch gets 221.8
-           -2.460e+01, -3.100e+00,  2.219e+02,  7.400e+00,  5.620e+01,
-            7.420e+01,  7.830e+01,  8.900e+00,  1.050e+01,  2.810e+01,
-            5.100e+00, -1.046e+02, -1.572e+02,  8.710e+01, -9.840e+01,
-           -4.230e+01, -1.898e+02,  1.860e+01, -3.570e+01,  9.810e+01,
-            4.680e+01,  1.182e+02,  4.020e+01, -1.900e+00,  1.508e+02,
-            1.094e+02,  1.018e+02, -4.620e+01,  1.591e+02, -2.320e+01,
-            // 5th value; torch gets 7.1
-           -8.450e+01, -4.600e+00,  6.330e+01,  1.123e+02, -7.000e+00,
-            1.101e+02, -6.620e+01,  2.090e+01, -5.120e+01,  8.990e+01,
-            9.050e+01, -6.990e+01,  6.800e+01, -9.250e+01,  1.380e+02,
-            4.720e+01,  4.710e+01,  6.210e+01,  8.870e+01,  2.098e+02,
-            3.870e+01, -1.390e+01,  6.270e+01,  1.484e+02, -9.920e+01,
-           -4.200e+01, -1.505e+02, -1.480e+01, -2.620e+01,  8.220e+01,
-           -3.350e+01, -2.260e+01, -1.198e+02, -5.080e+01,  1.259e+02,
-            5.600e+01,  9.270e+01,  1.209e+02,  6.590e+01, -8.330e+01,
-            7.000e+00, -2.600e+01, -1.133e+02,  3.870e+01,  4.020e+01,
-           -6.300e+00, -8.710e+01, -5.150e+01, -8.510e+01,  2.000e-01,
-            3.640e+01, -6.100e+00,  6.590e+01, -2.700e+00,  6.550e+01,
-            // 4th value; torch gets 3.8
-            5.300e+00, -6.760e+01, -4.270e+01, -3.900e+00,  2.880e+01,
-            5.260e+01,  6.170e+01, -1.203e+02, -1.610e+01,  7.740e+01,
-           -1.008e+02, -1.070e+01, -9.900e+00,  3.300e+00, -2.620e+01,
-           -4.440e+01,  2.580e+01, -6.920e+01, -4.220e+01,  1.108e+02,
-            1.240e+01, -3.440e+01, -2.800e+00,  7.880e+01, -6.690e+01,
-            1.480e+01,  2.310e+01, -4.260e+01, -1.500e+00, -4.760e+01,
-            5.350e+01, -2.260e+01,  8.000e-01, -3.840e+01, -2.500e+00
-        ]
-    );
-
     Ok(())
 }
 
-test_device!(conv1d, conv1d_cpu, conv1d_gpu, conv1d_metal);
-test_device!(
-    conv1d_small,
-    conv1d_small_cpu,
-    conv1d_small_gpu,
-    conv1d_small_metal
-);
-test_device!(conv2d, conv2d_cpu, conv2d_gpu, conv2d_metal);
+test_device!(conv1d, conv1d_cpu, conv1d_gpu);
+test_device!(conv1d_small, conv1d_small_cpu, conv1d_small_gpu);
+test_device!(conv2d, conv2d_cpu, conv2d_gpu);
 test_device!(
     conv2d_non_square,
     conv2d_non_square_cpu,
-    conv2d_non_square_gpu,
-    conv2d_non_square_metal
-);
-test_device!(
-    conv2d_small,
-    conv2d_small_cpu,
-    conv2d_small_gpu,
-    conv2d_small_metal
-);
-test_device!(
-    conv2d_smaller,
-    conv2d_smaller_cpu,
-    conv2d_smaller_gpu,
-    conv2d_smaller_metal
-);
-test_device!(
-    conv2d_grad,
-    conv2d_grad_cpu,
-    conv2d_grad_gpu,
-    conv2_grad_metal
+    conv2d_non_square_gpu
 );
+test_device!(conv2d_small, conv2d_small_cpu, conv2d_small_gpu);
+test_device!(conv2d_smaller, conv2d_smaller_cpu, conv2d_smaller_gpu);
+test_device!(conv2d_grad, conv2d_grad_cpu, conv2d_grad_gpu);

candle-core/tests/custom_op_tests.rs

@@ -112,70 +112,3 @@ fn custom_op1_with_backward() -> Result<()> {
 
     Ok(())
 }
-
-impl candle_core::InplaceOp1 for Elu {
-    fn name(&self) -> &'static str {
-        "elu"
-    }
-
-    fn cpu_fwd(&self, s: &mut CpuStorage, _l: &Layout) -> Result<()> {
-        let alpha = self.alpha;
-        match s {
-            CpuStorage::BF16(s) => s.iter_mut().for_each(|v| *v = fwd(*v, alpha)),
-            CpuStorage::F16(s) => s.iter_mut().for_each(|v| *v = fwd(*v, alpha)),
-            CpuStorage::F32(s) => s.iter_mut().for_each(|v| *v = fwd(*v, alpha)),
-            CpuStorage::F64(s) => s.iter_mut().for_each(|v| *v = fwd(*v, alpha)),
-            _ => candle_core::bail!("unsupported dtype for inplace elu"),
-        }
-        Ok(())
-    }
-}
-
-#[test]
-fn inplace_op1() -> Result<()> {
-    let cpu = &Device::Cpu;
-    let t = Tensor::arange(0u32, 12u32, cpu)?.to_dtype(DType::F32)?;
-    let t = (t - 5.)?;
-    t.inplace_op1(&Elu { alpha: 1. })?;
-    assert_eq!(
-        to_vec1_round(&t, 4)?,
-        &[-0.9933, -0.9817, -0.9502, -0.8647, -0.6321, 0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0]
-    );
-    Ok(())
-}
-
-#[cfg(any(feature = "cuda", feature = "metal"))]
-#[allow(clippy::approx_constant)]
-#[test]
-fn ug_op() -> Result<()> {
-    let kernel = {
-        use ug::lang::op;
-
-        let layout = ug::Layout::from_shape(&[12]);
-        let ptr = op::Arg::ptr(ug::DType::F32);
-        let src = op::load(ptr.id(), layout.clone(), ug::DType::F32)?;
-        let src = op::unary(op::UnaryOp::Exp, src)?;
-        let st = op::store(ptr.id(), layout, src)?;
-        let kernel = op::Kernel::new("exp".to_string(), vec![ptr], vec![st]);
-        let opts: ug::lower_op::Opts = Default::default();
-        kernel.lower(&opts)?
-    };
-    let device = if candle_core::utils::cuda_is_available() {
-        Device::new_cuda(0)?
-    } else if candle_core::utils::metal_is_available() {
-        Device::new_metal(0)?
-    } else {
-        candle_core::bail!("metal/cuda is mandatory for this test")
-    };
-    let op = candle_core::UgIOp1::new("test", kernel, &device)?;
-    let t = Tensor::arange(0u32, 12u32, &device)?.to_dtype(DType::F32)?;
-    t.inplace_op1(&op)?;
-    assert_eq!(
-        to_vec1_round(&t, 2)?,
-        &[
-            1.0, 2.72, 7.39, 20.09, 54.6, 148.41, 403.43, 1096.63, 2980.96, 8103.08, 22026.47,
-            59874.13
-        ]
-    );
-    Ok(())
-}

candle-core/tests/grad_tests.rs

@@ -1,4 +1,3 @@
-#![allow(clippy::approx_constant)]
 use anyhow::{Context, Result};
 use candle_core::{test_device, test_utils, Device, Shape, Tensor, Var};
 
@@ -97,24 +96,24 @@ fn unary_grad(device: &Device) -> Result<()> {
     let grads = y.backward()?;
     let grad_x = grads.get(x).context("no grad for x")?;
     assert_eq!(
-        test_utils::to_vec1_round(&y, 4)?,
-        [20.0855, 2.7183, 54.5982, 1.1618]
+        y.to_vec1::<f32>()?,
+        [20.085537, 2.7182817, 54.59815, 1.1618342]
     );
     assert_eq!(
-        test_utils::to_vec1_round(grad_x, 4)?,
-        [20.0855, 2.7183, 54.5982, 1.1618]
+        grad_x.to_vec1::<f32>()?,
+        [20.085537, 2.7182817, 54.59815, 1.1618342]
     );
     let y = x.exp()?.sqr()?;
     let grads = y.backward()?;
     let grad_x = grads.get(x).context("no grad for x")?;
     assert_eq!(
-        test_utils::to_vec1_round(&y, 3)?,
-        [403.429, 7.389, 2980.958, 1.35]
+        y.to_vec1::<f32>()?,
+        [403.4288, 7.3890557, 2980.9578, 1.3498588]
     );
     // exp(x)^2 = exp(2*x)
     assert_eq!(
-        test_utils::to_vec1_round(grad_x, 2)?,
-        [806.86, 14.78, 5961.92, 2.7]
+        grad_x.to_vec1::<f32>()?,
+        [806.8576, 14.778111, 5961.9155, 2.6997175]
     );
     let y = x.sin()?;
     let grads = y.backward()?;
@@ -206,260 +205,6 @@ fn unary_grad(device: &Device) -> Result<()> {
         test_utils::to_vec1_round(grad_x, 4)?,
         [1.0116, 1.0830, 1.0003, 0.6188],
     );
-
-    // Testing compared to pytorch torch.erf
-    //
-    // import torch
-    // x = torch.tensor([3.0, 1.0, 4.0, 0.15], requires_grad=True)
-    // y = x.erf()
-    // print(y)
-    // loss = y.sum()
-    // loss.backward()
-    // print(x.grad)
-    let y = x.erf()?;
-    let grads = y.backward()?;
-    let grad_x = grads.get(&x).context("no grad for x")?;
-    assert_eq!(test_utils::to_vec1_round(&y, 4)?, [1.0, 0.8427, 1.0, 0.168]);
-    assert_eq!(
-        test_utils::to_vec1_round(grad_x, 4)?,
-        [0.0001, 0.4151, 0.0, 1.1033],
-    );
-
-    // Testing compared to pytorch nn.GELU(approximate = 'none')
-    //
-    // import torch
-    // import torch.nn.functional as F
-    // x = torch.tensor([3.0, 1.0, 4.0, 0.15], requires_grad=True)
-    // y = F.gelu(x, approximate='none')
-    // print(y)
-    // loss = y.sum()
-    // loss.backward()
-    // print(x.grad)
-    let y = x.gelu_erf()?;
-    let grads = y.backward()?;
-    let grad_x = grads.get(&x).context("no grad for x")?;
-    assert_eq!(
-        test_utils::to_vec1_round(&y, 4)?,
-        [2.9960, 0.8413, 3.9999, 0.0839]
-    );
-    assert_eq!(
-        test_utils::to_vec1_round(grad_x, 4)?,
-        [1.0119, 1.0833, 1.0005, 0.6188],
-    );
-
-    // Testing compared to pytorch elu
-    //
-    // import torch
-    // import torch.nn.functional as F
-    // x = torch.tensor([-1.0, 0.0, -2.0, 3.0], requires_grad=True)
-    // y = F.elu(x, alpha=2.0)
-    // print(y)
-    // loss = y.min
-    // loss = y.sum()
-    // loss.backward()
-    // print(x.grad)
-    let elu_x = Var::new(&[-1.0f32, 0., -2., 3.], device)?;
-    let y = elu_x.elu(2.)?;
-    let grads = y.backward()?;
-    let grad_x = grads.get(&elu_x).context("no grad for x")?;
-
-    assert_eq!(
-        test_utils::to_vec1_round(&y, 4)?,
-        [-1.2642, 0.0000, -1.7293, 3.0000]
-    );
-    assert_eq!(
-        test_utils::to_vec1_round(grad_x, 4)?,
-        [0.7358, 2.0000, 0.2707, 1.0000]
-    );
-
-    // testing compared to pytorch nn.Silu()
-    let y = x.silu()?;
-    let grads = y.backward()?;
-    let grad_x = grads.get(&x).context("no grad for x")?;
-    assert_eq!(
-        test_utils::to_vec1_round(&y, 4)?,
-        [2.8577, 0.7311, 3.9281, 0.0806]
-    );
-    assert_eq!(
-        test_utils::to_vec1_round(grad_x, 4)?,
-        [1.0881, 0.9277, 1.0527, 0.5747],
-    );
-
-    if device.is_cpu() {
-        let x = Var::new(&[[[1f32, 2., 3.], [4., 5., 6.], [7., 8., 9.]]], device)?;
-        let y = x.interpolate1d(12)?.reshape(36)?;
-
-        let z = Tensor::new(
-            &[
-                1_f32, 02., 03., 04., 05., 06., 07., 08., 09., 10., 11., 12., 13., 14., 15., 16.,
-                17., 18., 19., 20., 21., 22., 23., 24., 25., 26., 27., 28., 29., 30., 31., 32.,
-                33., 34., 35., 36.,
-            ],
-            device,
-        )?;
-
-        let loss = y.unsqueeze(1)?.transpose(0, 1)?.matmul(&z.unsqueeze(1)?)?;
-        let grads = loss.backward()?;
-        let grad_x = grads.get(&x).context("no grad for x")?;
-
-        assert_eq!(
-            test_utils::to_vec3_round(grad_x, 4)?,
-            [[[10_f32, 26., 42.], [58., 74., 90.], [106., 122., 138.]]]
-        );
-    }
-
-    // manually checked: see comments
-    let x = Var::new(&[[[[1f32, 2., 3.], [4., 5., 6.], [7., 8., 9.]]]], device)?;
-    let y = x.interpolate2d(6, 6)?.reshape(36)?;
-
-    let z = Tensor::new(
-        &[
-            1_f32, 02., 03., 04., 05., 06., 07., 08., 09., 10., 11., 12., 13., 14., 15., 16., 17.,
-            18., 19., 20., 21., 22., 23., 24., 25., 26., 27., 28., 29., 30., 31., 32., 33., 34.,
-            35., 36.,
-        ],
-        device,
-    )?;
-    // gradient should be
-    // row 1
-    // 1+2+7+8 = 18
-    // 3+4+9+10 = 26
-    // 5+6+11+12 = 34
-    // row 2
-    // 13+14+19+20 = 66
-    // 15+16+21+22 = 74
-    // 17+18+23+24 = 82
-    // row 3
-    // 25+26+31+32 = 114
-    // 27+28+33+34 = 122
-    // 29+30+35+36 = 130
-    let loss = y.unsqueeze(1)?.transpose(0, 1)?.matmul(&z.unsqueeze(1)?)?;
-
-    let grads = loss.backward()?;
-
-    let grad_x = grads.get(&x).context("no grad for x")?;
-    assert_eq!(
-        test_utils::to_vec2_round(&grad_x.flatten(0, 2)?, 4)?,
-        [[18_f32, 26., 34.], [66., 74., 82.], [114., 122., 130.]]
-    );
-
-    // manually checked: see comments
-    let x = Var::new(&[[[[1f32, 2.], [4., 5.]]]], device)?;
-    let y = x.interpolate2d(6, 6)?.reshape(36)?;
-
-    let z = Tensor::new(
-        &[
-            1_f32, 02., 03., 04., 05., 06., 07., 08., 09., 10., 11., 12., 13., 14., 15., 16., 17.,
-            18., 19., 20., 21., 22., 23., 24., 25., 26., 27., 28., 29., 30., 31., 32., 33., 34.,
-            35., 36.,
-        ],
-        device,
-    )?;
-    // gradient should be
-    // row 1
-    // 1+2+3+7+8+9+13+14+15 = 72
-    // 4+5+6+10+11+12+16+17+18 = 99
-    // row 2
-    // 19+20+21+25+26+27+31+32+33 = 234
-    // 22+23+24+28+29+30+34+35+36 = 243
-    let loss = y.unsqueeze(1)?.transpose(0, 1)?.matmul(&z.unsqueeze(1)?)?;
-
-    let grads = loss.backward()?;
-
-    let grad_x = grads.get(&x).context("no grad for x")?;
-    assert_eq!(
-        test_utils::to_vec2_round(&grad_x.flatten(0, 2)?, 4)?,
-        [[72_f32, 99.], [234., 261.]]
-    );
-
-    // manually checked: see comments
-    let x = Var::new(&[[[[1f32, 2.], [4., 5.]], [[6f32, 7.], [8., 9.]]]], device)?;
-
-    let y = x.interpolate2d(4, 4)?.reshape(32)?;
-
-    #[rustfmt::skip]
-    let z = Tensor::new(
-        &[
-            1_f32, 02., 03., 04.,
-            05.,   06., 07., 08.,
-            09.,   10., 11., 12.,
-            13.,   14., 15., 16.,
-            17.,   18., 19., 20.,
-            21.,   22., 23., 24.,
-            25.,   26., 27., 28.,
-            29.,   30., 31., 32.
-        ],
-        device,
-    )?;
-    // gradient should be
-    // m1r1
-    // 1+2+5+6=14
-    // 3+4+7+8=22
-    // m1r2
-    // 9+10+13+14=46
-    // 11+12+15+16=54
-    // m2r1
-    // 17+18+21+22=78
-    // 19+20+23+24=86
-    // m2r2
-    // 25+26+29+30=110
-    // 27+28+31+32=118
-    let loss = y.unsqueeze(1)?.transpose(0, 1)?.matmul(&z.unsqueeze(1)?)?;
-
-    let grads = loss.backward()?;
-
-    let grad_x = grads.get(&x).context("no grad for x")?;
-
-    assert_eq!(
-        test_utils::to_vec3_round(&grad_x.flatten(0, 1)?, 4)?,
-        [[[14_f32, 22.], [46., 54.]], [[78., 86.], [110., 118.]]]
-    );
-
-    // manually checked: see comments
-    let x = Var::new(
-        &[[[[1f32, 2.], [4., 5.]]], [[[6f32, 7.], [8., 9.]]]],
-        device,
-    )?;
-
-    let y = x.interpolate2d(4, 4)?.reshape(32)?;
-
-    #[rustfmt::skip]
-       let z = Tensor::new(
-           &[
-               1_f32, 02., 03., 04.,
-               05.,   06., 07., 08.,
-               09.,   10., 11., 12.,
-               13.,   14., 15., 16.,
-               17.,   18., 19., 20.,
-               21.,   22., 23., 24.,
-               25.,   26., 27., 28.,
-               29.,   30., 31., 32.
-           ],
-           device,
-       )?;
-    // gradient should be
-    // m1r1
-    // 1+2+5+6=14
-    // 3+4+7+8=22
-    // m1r2
-    // 9+10+13+14=46
-    // 11+12+15+16=54
-    // m2r1
-    // 17+18+21+22=78
-    // 19+20+23+24=86
-    // m2r2
-    // 25+26+29+30=110
-    // 27+28+31+32=118
-    let loss = y.unsqueeze(1)?.transpose(0, 1)?.matmul(&z.unsqueeze(1)?)?;
-
-    let grads = loss.backward()?;
-
-    let grad_x = grads.get(&x).context("no grad for x")?;
-
-    assert_eq!(
-        test_utils::to_vec3_round(&grad_x.flatten(0, 1)?, 4)?,
-        [[[14_f32, 22.], [46., 54.]], [[78., 86.], [110., 118.]]]
-    );
     Ok(())
 }
 
@@ -505,29 +250,9 @@ fn binary_grad(device: &Device) -> Result<()> {
     Ok(())
 }
 
-test_device!(
-    simple_grad,
-    simple_grad_cpu,
-    simple_grad_gpu,
-    simple_grad_metal
-);
-test_device!(sum_grad, sum_grad_cpu, sum_grad_gpu, sum_grad_metal);
-test_device!(
-    matmul_grad,
-    matmul_grad_cpu,
-    matmul_grad_gpu,
-    matmul_grad_metal
-);
-test_device!(
-    grad_descent,
-    grad_descent_cpu,
-    grad_descent_gpu,
-    grad_descent_metal
-);
-test_device!(unary_grad, unary_grad_cpu, unary_grad_gpu, unary_grad_metal);
-test_device!(
-    binary_grad,
-    binary_grad_cpu,
-    binary_grad_gpu,
-    binary_grad_metal
-);
+test_device!(simple_grad, simple_grad_cpu, simple_grad_gpu);
+test_device!(sum_grad, sum_grad_cpu, sum_grad_gpu);
+test_device!(matmul_grad, matmul_grad_cpu, matmul_grad_gpu);
+test_device!(grad_descent, grad_descent_cpu, grad_descent_gpu);
+test_device!(unary_grad, unary_grad_cpu, unary_grad_gpu);
+test_device!(binary_grad, binary_grad_cpu, binary_grad_gpu);

candle-core/tests/indexing_tests.rs

@@ -91,32 +91,3 @@ fn index_3d() -> Result<()> {
     assert_eq!(tensor.i((1, .., 3))?.to_vec1::<u32>()?, &[15, 19, 23]);
     Ok(())
 }
-
-#[test]
-fn slice_assign() -> Result<()> {
-    let dev = Device::Cpu;
-
-    let tensor = Tensor::arange(0u32, 4 * 5, &dev)?.reshape((4, 5))?;
-    let src = Tensor::arange(0u32, 2 * 3, &dev)?.reshape((3, 2))?;
-    let out = tensor.slice_assign(&[1..4, 3..5], &src)?;
-    assert_eq!(
-        out.to_vec2::<u32>()?,
-        &[
-            [0, 1, 2, 3, 4],
-            [5, 6, 7, 0, 1],
-            [10, 11, 12, 2, 3],
-            [15, 16, 17, 4, 5]
-        ]
-    );
-    let out = tensor.slice_assign(&[0..3, 0..2], &src)?;
-    assert_eq!(
-        out.to_vec2::<u32>()?,
-        &[
-            [0, 1, 2, 3, 4],
-            [2, 3, 7, 8, 9],
-            [4, 5, 12, 13, 14],
-            [15, 16, 17, 18, 19]
-        ]
-    );
-    Ok(())
-}

candle-core/tests/layout_tests.rs

@@ -49,7 +49,7 @@ fn contiguous(device: &Device) -> Result<()> {
     Ok(())
 }
 
-test_device!(contiguous, contiguous_cpu, contiguous_gpu, contiguous_metal);
+test_device!(contiguous, contiguous_cpu, contiguous_gpu);
 
 #[test]
 fn strided_blocks() -> Result<()> {
@@ -88,7 +88,7 @@ fn strided_blocks() -> Result<()> {
         }
     };
     let tensor = Tensor::arange(0u32, 24u32, &Cpu)?.reshape((2, 3, 4))?;
-    let tensor = tensor.i((.., 1))?.contiguous()?;
+    let tensor = tensor.i((.., 1))?;
     match tensor.strided_blocks() {
         candle::StridedBlocks::SingleBlock { start_offset, len } => {
             assert_eq!(start_offset, 0);
@@ -100,20 +100,6 @@ fn strided_blocks() -> Result<()> {
         }
     };
     let tensor = Tensor::arange(0u32, 24u32, &Cpu)?.reshape((2, 3, 4))?;
-    let tensor = tensor.i((.., 1))?;
-    match tensor.strided_blocks() {
-        candle::StridedBlocks::SingleBlock { .. } => {
-            panic!("unexpected block structure")
-        }
-        candle::StridedBlocks::MultipleBlocks {
-            block_len,
-            block_start_index,
-        } => {
-            assert_eq!(block_len, 4);
-            assert_eq!(block_start_index.collect::<Vec<_>>(), &[4, 16])
-        }
-    };
-    let tensor = Tensor::arange(0u32, 24u32, &Cpu)?.reshape((2, 3, 4))?;
     match tensor.t()?.strided_blocks() {
         candle::StridedBlocks::SingleBlock { .. } => {
             panic!("unexpected block structure")

candle-core/tests/matmul_tests.rs

@@ -1,126 +0,0 @@
-use candle_core::{test_device, DType, Device, IndexOp, Result, Tensor};
-
-fn matmul(device: &Device) -> Result<()> {
-    let data = vec![1.0f32, 2.0, 3.0, 4.0];
-    let a = Tensor::from_slice(&data, (2, 2), device)?;
-    let data = vec![1.0f32, 2.0, 3.0, 4.0];
-    let b = Tensor::from_slice(&data, (2, 2), device)?;
-
-    let c = a.matmul(&b)?;
-    assert_eq!(c.to_vec2::<f32>()?, &[[7.0f32, 10.0], [15.0, 22.0]]);
-
-    let data = vec![1.0f32, 2.0];
-    let a = Tensor::from_slice(&data, (2, 1), device)?;
-    let data = vec![3.0f32, 4.0];
-    let b = Tensor::from_slice(&data, (1, 2), device)?;
-    let c = a.matmul(&b)?;
-    assert_eq!(c.to_vec2::<f32>()?, &[&[3.0, 4.0], &[6.0, 8.0]]);
-
-    let data: Vec<_> = (0..6).map(|i| i as f32).collect();
-    let a = Tensor::from_slice(&data, (2, 3), device)?;
-    let data: Vec<_> = (0..6).map(|i| (i + 2) as f32).collect();
-    let b = Tensor::from_slice(&data, (3, 2), device)?;
-    let c = a.matmul(&b)?;
-    assert_eq!(c.to_vec2::<f32>()?, &[&[16., 19.], &[52., 64.]]);
-
-    let data: Vec<_> = (0..12).map(|i| i as f32).collect();
-    let a = Tensor::from_slice(&data, (2, 2, 3), device)?;
-    let data: Vec<_> = (0..12).map(|i| (i + 2) as f32).collect();
-    let b = Tensor::from_slice(&data, (2, 3, 2), device)?;
-    let expected = [[[16., 19.], [52., 64.]], [[214., 235.], [304., 334.]]];
-
-    let c = a.matmul(&b)?;
-    assert_eq!(c.to_vec3::<f32>()?, &expected);
-
-    // Also perform the matmul on contiguous transposed versions.
-    let a_tt = a.t()?.contiguous()?.t()?;
-    assert!(!a_tt.is_contiguous());
-    assert_eq!(a.dims(), a_tt.dims());
-    assert_eq!(a_tt.stride(), &[6, 1, 2]);
-
-    let b_tt = b.t()?.contiguous()?.t()?;
-    assert!(!b_tt.is_contiguous());
-    assert_eq!(b.dims(), b_tt.dims());
-    assert_eq!(b_tt.stride(), &[6, 1, 3]);
-
-    assert_eq!(a_tt.matmul(&b)?.to_vec3::<f32>()?, &expected);
-    assert_eq!(a.matmul(&b_tt)?.to_vec3::<f32>()?, &expected);
-    assert_eq!(a_tt.matmul(&b_tt)?.to_vec3::<f32>()?, &expected);
-    Ok(())
-}
-
-fn matmul_bf16(device: &Device) -> Result<()> {
-    if !device.supports_bf16() {
-        return Ok(());
-    }
-    let data = vec![1.0f32, 2.0, 3.0, 4.0];
-    let a = Tensor::from_slice(&data, (2, 2), device)?.to_dtype(DType::BF16)?;
-    let data = vec![1.0f32, 2.0, 3.0, 4.0];
-    let b = Tensor::from_slice(&data, (2, 2), device)?.to_dtype(DType::BF16)?;
-
-    let c = a.matmul(&b)?.to_dtype(DType::F32)?;
-    assert_eq!(c.to_vec2::<f32>()?, &[[7.0f32, 10.0], [15.0, 22.0]]);
-    Ok(())
-}
-
-fn broadcast_matmul(device: &Device) -> Result<()> {
-    let lhs = Tensor::randn(0f32, 1f32, (3, 1, 4, 5), device)?;
-    let rhs = Tensor::randn(0f32, 1f32, (6, 5, 2), device)?;
-    let out = lhs.broadcast_matmul(&rhs)?;
-    assert_eq!(out.dims(), &[3, 6, 4, 2]);
-    for idx1 in 0..3 {
-        for idx2 in 0..6 {
-            let out = out.i((idx1, idx2))?;
-            let lhs = lhs.i((idx1, 0))?;
-            let rhs = rhs.i(idx2)?;
-            let out2 = lhs.matmul(&rhs);
-            let sum_diff2 = (out - out2)?.sqr()?.sum_all()?;
-            // With cuda, we see errors of up to ~1e-12.
-            assert!(sum_diff2.to_vec0::<f32>()? < 1e-6)
-        }
-    }
-    Ok(())
-}
-
-// https://github.com/huggingface/candle/issues/1948
-fn squeeze_mm(device: &Device) -> Result<()> {
-    let seq_len = 8_usize;
-    let a = Tensor::zeros((1, seq_len, 16), DType::F32, device)?;
-    let x = a.i((.., seq_len - 1, ..))?;
-    let w = Tensor::zeros((32, 16), DType::F32, device)?.t()?;
-    let x = x.matmul(&w)?;
-    assert_eq!(x.dims(), &[1, 32]);
-    Ok(())
-}
-
-// https://github.com/huggingface/candle/issues/1992
-fn mm_layout(device: &Device) -> Result<()> {
-    let a = Tensor::arange(0f32, 16f32, device)?.reshape((1, 1, 4, 4))?;
-    let b = Tensor::arange(0f32, 8f32, device)?.reshape((1, 1, 4, 2))?;
-    let mm1 = a.matmul(&b)?;
-    // Forces the layout to be:
-    // shape: [1, 1, 4, 2], stride: [8, 2, 2, 1], start_offset: 0
-    // This is still a contiguous matrix but matmul checks are only the two last dimensions have
-    // non 1 sizes but matmul check may be reluctant to handle it.
-    let b = b.transpose(1, 2)?.force_contiguous()?.transpose(1, 2)?;
-    let mm2 = a.matmul(&b)?;
-    let diff = (mm1 - mm2)?.abs()?.sum_all()?.to_vec0::<f32>()?;
-    assert_eq!(diff, 0.);
-    Ok(())
-}
-
-test_device!(matmul, matmul_cpu, matmul_gpu, matmul_metal);
-test_device!(
-    matmul_bf16,
-    matmul_bf16_cpu,
-    matmul_bf16_gpu,
-    matmul_bf16_metal
-);
-test_device!(
-    broadcast_matmul,
-    broadcast_matmul_cpu,
-    broadcast_matmul_gpu,
-    broadcast_matmul_metal
-);
-test_device!(squeeze_mm, squeeze_mm_cpu, squeeze_mm_gpu, squeeze_mm_metal);
-test_device!(mm_layout, mm_layout_cpu, mm_layout_gpu, mm_layout_metal);

candle-core/tests/pool_tests.rs

@@ -43,9 +43,6 @@ res = torch.nn.functional.avg_pool2d(t, 2)
 print(res)
 */
 fn avg_pool2d_pytorch(dev: &Device) -> Result<()> {
-    if dev.is_metal() {
-        return Ok(());
-    }
     let t = Tensor::new(
         &[
             0.4056f32, -0.8689, -0.0773, -1.5630, -2.8012, -1.5059, 0.3972, 1.0852, 0.4997, 3.0616,
@@ -101,17 +98,15 @@ fn upsample_nearest2d(dev: &Device) -> Result<()> {
     Ok(())
 }
 
-test_device!(avg_pool2d, avg_pool2d_cpu, avg_pool2d_gpu, avg_pool2d_metal);
+test_device!(avg_pool2d, avg_pool2d_cpu, avg_pool2d_gpu);
 test_device!(
     avg_pool2d_pytorch,
     avg_pool2d_pytorch_cpu,
-    avg_pool2d_pytorch_gpu,
-    avg_pool2d_pytorch_metal
+    avg_pool2d_pytorch_gpu
 );
-test_device!(max_pool2d, max_pool2d_cpu, max_pool2d_gpu, max_pool2d_metal);
+test_device!(max_pool2d, max_pool2d_cpu, max_pool2d_gpu);
 test_device!(
     upsample_nearest2d,
     upsample_nearest2d_cpu,
-    upsample_nearest2d_gpu,
-    upsample_nearest2d_metal
+    upsample_nearest2d_gpu
 );

candle-core/tests/pth.py

@@ -1,37 +0,0 @@
-import torch
-from collections import OrderedDict
-
-# Write a trivial tensor to a pt file
-a= torch.tensor([[1,2,3,4], [5,6,7,8]])
-o = OrderedDict()
-o["test"] = a
-
-# Write a trivial tensor to a pt file
-torch.save(o, "test.pt")
-
-############################################################################################################
-# Write a trivial tensor to a pt file with a key
-torch.save({"model_state_dict": o}, "test_with_key.pt")
-
-############################################################################################################
-# Create a tensor with fortran contiguous memory layout
-import numpy as np
-
-# Step 1: Create a 3D NumPy array with Fortran order using a range of numbers
-# For example, creating a 2x3x4 array
-array_fortran = np.asfortranarray(np.arange(1, 2*3*4 + 1).reshape(2, 3, 4))
-
-# Verify the memory order
-print("Is Fortran contiguous (F order):", array_fortran.flags['F_CONTIGUOUS'])  # Should be True
-print("Is C contiguous (C order):", array_fortran.flags['C_CONTIGUOUS'])  # Should be False
-
-# Step 2: Convert the NumPy array to a PyTorch tensor
-tensor_fortran = torch.from_numpy(array_fortran)
-
-# Verify the tensor layout
-print("Tensor stride:", tensor_fortran.stride())  # Stride will reflect the Fortran memory layout
-
-# Step 3: Save the PyTorch tensor to a .pth file
-torch.save({"tensor_fortran": tensor_fortran}, 'fortran_tensor_3d.pth')
-
-print("3D Tensor saved with Fortran layout.")

candle-core/tests/pth_tests.rs

@@ -1,31 +0,0 @@
-/// Regression test for pth files not loading on Windows.
-#[test]
-fn test_pth() {
-    let tensors = candle_core::pickle::PthTensors::new("tests/test.pt", None).unwrap();
-    tensors.get("test").unwrap().unwrap();
-}
-
-#[test]
-fn test_pth_with_key() {
-    let tensors =
-        candle_core::pickle::PthTensors::new("tests/test_with_key.pt", Some("model_state_dict"))
-            .unwrap();
-    tensors.get("test").unwrap().unwrap();
-}
-
-#[test]
-fn test_pth_fortran_congiguous() {
-    let tensors =
-        candle_core::pickle::PthTensors::new("tests/fortran_tensor_3d.pth", None).unwrap();
-    let tensor = tensors.get("tensor_fortran").unwrap().unwrap();
-
-    assert_eq!(tensor.dims3().unwrap(), (2, 3, 4));
-
-    assert_eq!(
-        tensor.to_vec3::<i64>().unwrap(),
-        [
-            [[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]],
-            [[13, 14, 15, 16], [17, 18, 19, 20], [21, 22, 23, 24]]
-        ]
-    );
-}

candle-core/tests/serialization_tests.rs

@@ -1,31 +1,5 @@
 use candle_core::{DType, Result, Tensor};
 
-struct TmpFile(std::path::PathBuf);
-
-impl TmpFile {
-    fn create(base: &str) -> TmpFile {
-        let filename = std::env::temp_dir().join(format!(
-            "candle-{}-{}-{:?}",
-            base,
-            std::process::id(),
-            std::thread::current().id(),
-        ));
-        TmpFile(filename)
-    }
-}
-
-impl std::convert::AsRef<std::path::Path> for TmpFile {
-    fn as_ref(&self) -> &std::path::Path {
-        self.0.as_path()
-    }
-}
-
-impl Drop for TmpFile {
-    fn drop(&mut self) {
-        std::fs::remove_file(&self.0).unwrap()
-    }
-}
-
 #[test]
 fn npy() -> Result<()> {
     let npy = Tensor::read_npy("tests/test.npy")?;
@@ -48,24 +22,3 @@ fn npz() -> Result<()> {
     );
     Ok(())
 }
-
-#[test]
-fn safetensors() -> Result<()> {
-    use candle_core::safetensors::Load;
-
-    let tmp_file = TmpFile::create("st");
-    let t = Tensor::arange(0f32, 24f32, &candle_core::Device::Cpu)?;
-    t.save_safetensors("t", &tmp_file)?;
-    // Load from file.
-    let st = candle_core::safetensors::load(&tmp_file, &candle_core::Device::Cpu)?;
-    let t2 = st.get("t").unwrap();
-    let diff = (&t - t2)?.abs()?.sum_all()?.to_vec0::<f32>()?;
-    assert_eq!(diff, 0f32);
-    // Load from bytes.
-    let bytes = std::fs::read(tmp_file)?;
-    let st = candle_core::safetensors::SliceSafetensors::new(&bytes)?;
-    let t2 = st.get("t").unwrap().load(&candle_core::Device::Cpu);
-    let diff = (&t - t2)?.abs()?.sum_all()?.to_vec0::<f32>()?;
-    assert_eq!(diff, 0f32);
-    Ok(())
-}

candle-core/tests/tensor_tests.rs

@@ -1,4 +1,4 @@
-use candle_core::{test_device, test_utils, DType, Device, IndexOp, Result, Tensor, D};
+use candle_core::{test_device, test_utils, DType, Device, IndexOp, Result, Tensor};
 
 fn zeros(device: &Device) -> Result<()> {
     let tensor = Tensor::zeros((5, 2), DType::F32, device)?;
@@ -29,64 +29,7 @@ fn ones(device: &Device) -> Result<()> {
         Tensor::ones((2, 3), DType::F64, device)?.to_vec2::<f64>()?,
         [[1.0, 1.0, 1.0], [1.0, 1.0, 1.0]],
     );
-    assert_eq!(
-        Tensor::ones((2, 3), DType::F16, device)?.to_vec2::<half::f16>()?,
-        [
-            [
-                half::f16::from_f32(1.0),
-                half::f16::from_f32(1.0),
-                half::f16::from_f32(1.0)
-            ],
-            [
-                half::f16::from_f32(1.0),
-                half::f16::from_f32(1.0),
-                half::f16::from_f32(1.0)
-            ]
-        ],
-    );
-    assert_eq!(
-        Tensor::ones((2, 3), DType::BF16, device)?.to_vec2::<half::bf16>()?,
-        [
-            [
-                half::bf16::from_f32(1.0),
-                half::bf16::from_f32(1.0),
-                half::bf16::from_f32(1.0)
-            ],
-            [
-                half::bf16::from_f32(1.0),
-                half::bf16::from_f32(1.0),
-                half::bf16::from_f32(1.0)
-            ]
-        ],
-    );
-    Ok(())
-}
 
-fn full(device: &Device) -> Result<()> {
-    assert_eq!(
-        Tensor::full(42u32, (2, 3), device)?.to_vec2::<u32>()?,
-        [[42, 42, 42], [42, 42, 42]],
-    );
-    Ok(())
-}
-
-fn arange(device: &Device) -> Result<()> {
-    assert_eq!(
-        Tensor::arange(0u8, 5u8, device)?.to_vec1::<u8>()?,
-        [0, 1, 2, 3, 4],
-    );
-    assert_eq!(
-        Tensor::arange_step(0u8, 5u8, 2, device)?.to_vec1::<u8>()?,
-        [0, 2, 4],
-    );
-    assert_eq!(
-        Tensor::arange_step(0u8, 5u8, 3, device)?.to_vec1::<u8>()?,
-        [0, 3],
-    );
-    assert_eq!(
-        Tensor::arange_step(5i64, 0i64, -1, device)?.to_vec1::<i64>()?,
-        [5, 4, 3, 2, 1],
-    );
     Ok(())
 }
 
@@ -126,40 +69,6 @@ fn clamp(device: &Device) -> Result<()> {
     Ok(())
 }
 
-fn asort(device: &Device) -> Result<()> {
-    let data = &[[3f32, 1., 4., 1.1, 5.], [2.1, 1., 7., 8., 2.]];
-    let tensor = Tensor::new(data, device)?;
-    let indexes = tensor.arg_sort_last_dim(true)?;
-    assert_eq!(
-        indexes.to_vec2::<u32>()?,
-        [[1, 3, 0, 2, 4], [1, 4, 0, 2, 3]],
-    );
-    let indexes = tensor.arg_sort_last_dim(false)?;
-    assert_eq!(
-        indexes.to_vec2::<u32>()?,
-        [[4, 2, 0, 3, 1], [3, 2, 0, 4, 1]],
-    );
-    let (sorted, indexes) = tensor.sort_last_dim(true)?;
-    assert_eq!(
-        indexes.to_vec2::<u32>()?,
-        [[1, 3, 0, 2, 4], [1, 4, 0, 2, 3]],
-    );
-    assert_eq!(
-        sorted.to_vec2::<f32>()?,
-        [[1.0, 1.1, 3.0, 4.0, 5.0], [1.0, 2.0, 2.1, 7.0, 8.0]]
-    );
-    let (sorted, indexes) = tensor.sort_last_dim(false)?;
-    assert_eq!(
-        indexes.to_vec2::<u32>()?,
-        [[4, 2, 0, 3, 1], [3, 2, 0, 4, 1]],
-    );
-    assert_eq!(
-        sorted.to_vec2::<f32>()?,
-        [[5.0, 4.0, 3.0, 1.1, 1.0], [8.0, 7.0, 2.1, 2.0, 1.0]]
-    );
-    Ok(())
-}
-
 fn unary_op(device: &Device) -> Result<()> {
     let data = &[[-3f32, 1., 4., -0.1, 0.5], [2.7, -1.8, -0.28, 1.8, 2.8]];
     let tensor = Tensor::new(data, device)?;
@@ -170,9 +79,6 @@ fn unary_op(device: &Device) -> Result<()> {
             [2.6911, -0.0647, -0.1091, 1.7353, 2.7933]
         ]
     );
-    let t_f16 = tensor.to_dtype(DType::F16)?.gelu()?.to_dtype(DType::F32)?;
-    let max_diff = (tensor.gelu()? - t_f16)?.flatten_all()?.max(0)?;
-    assert!(max_diff.to_vec0::<f32>()? < 5e-3);
     assert_eq!(
         test_utils::to_vec2_round(&tensor.gelu_erf()?, 4)?,
         [
@@ -187,13 +93,6 @@ fn unary_op(device: &Device) -> Result<()> {
             [0.9999, -0.9891, -0.3079, 0.9891, 0.9999]
         ]
     );
-    assert_eq!(
-        test_utils::to_vec2_round(&tensor.silu()?, 4)?,
-        [
-            [-0.1423, 0.7311, 3.9281, -0.0475, 0.3112],
-            [2.53, -0.2553, -0.1205, 1.5447, 2.6395]
-        ]
-    );
     assert_eq!(
         test_utils::to_vec2_round(&tensor.ceil()?, 4)?,
         [[-3.0, 1.0, 4.0, -0.0, 1.0], [3.0, -1.0, -0.0, 2.0, 3.0]]
@@ -215,27 +114,6 @@ fn unary_op(device: &Device) -> Result<()> {
         test_utils::to_vec1_round(&tensor.round_to(-2)?, 4)?,
         [3000.0, 300.]
     );
-    let tensor = Tensor::new(
-        &[-1.01f32, -0.9, -0.1, 0.0, -0.0, 0.1, 0.9, 1.0, 1.1],
-        device,
-    )?;
-    assert_eq!(
-        tensor.sign()?.to_vec1::<f32>()?,
-        [-1., -1., -1., 0., 0., 1., 1., 1., 1.]
-    );
-    let tensor = Tensor::new(&[-1.0f32, 0., -2., 3.], device)?;
-    let y = tensor.elu(2.)?;
-    assert_eq!(
-        test_utils::to_vec1_round(&y, 4)?,
-        [-1.2642, 0.0000, -1.7293, 3.0000]
-    );
-    // This test failed on metal prior to the following PR:
-    // https://github.com/huggingface/candle/pull/2490
-    let y = tensor.reshape((2, 2))?.t()?.elu(2.)?.flatten_all()?;
-    assert_eq!(
-        test_utils::to_vec1_round(&y, 4)?,
-        [-1.2642, -1.7293, 0.0000, 3.0000]
-    );
     Ok(())
 }
 
@@ -283,22 +161,6 @@ fn transpose(device: &Device) -> Result<()> {
     Ok(())
 }
 
-fn var(device: &Device) -> Result<()> {
-    // Values taken from https://pytorch.org/docs/stable/generated/torch.var.html
-    let data = &[
-        [0.2035f32, 1.2959, 1.8101, -0.4644],
-        [1.5027, -0.3270, 0.5905, 0.6538],
-        [-1.5745, 1.3330, -0.5596, -0.6548],
-        [0.1264, -0.5080, 1.6420, 0.1992],
-    ];
-    let tensor = Tensor::new(data, device)?;
-    assert_eq!(
-        test_utils::to_vec2_round(&tensor.var_keepdim(1)?, 4)?,
-        &[[1.0631], [0.559], [1.4893], [0.8258]]
-    );
-    Ok(())
-}
-
 fn sum(device: &Device) -> Result<()> {
     let data = &[[[3u32, 1, 4], [1, 5, 9]], [[2, 1, 7], [8, 2, 8]]];
     let tensor = Tensor::new(data, device)?;
@@ -708,32 +570,6 @@ fn broadcast(device: &Device) -> Result<()> {
     Ok(())
 }
 
-fn slice_set(device: &Device) -> Result<()> {
-    let (b, h, max_t, d) = (2, 4, 7, 3);
-    let cache = Tensor::zeros((b, h, max_t, d), DType::F32, device)?;
-    let tensor = Tensor::randn(0f32, 1f32, (b, h, 4, d), device)?;
-    cache.slice_set(&tensor, 2, 0)?;
-    let cache_t = cache.narrow(2, 0, 4)?;
-    let diff = (cache_t - &tensor)?.abs()?.sum_all()?.to_vec0::<f32>()?;
-    assert_eq!(diff, 0.);
-    cache.slice_set(&tensor, 2, 1)?;
-    let cache_t = cache.narrow(2, 1, 4)?;
-    let diff = (cache_t - &tensor)?.abs()?.sum_all()?.to_vec0::<f32>()?;
-    assert_eq!(diff, 0.);
-    let ones = Tensor::ones((b, h, 1, d), DType::F32, device)?;
-    cache.slice_set(&ones, 2, 6)?;
-    let diff = cache.narrow(2, 5, 1)?.abs()?.sum_all()?.to_vec0::<f32>()?;
-    assert_eq!(diff, 0.);
-    let diff = (cache.narrow(2, 6, 1)? - 1.)?
-        .abs()?
-        .sum_all()?
-        .to_vec0::<f32>()?;
-    assert_eq!(diff, 0.);
-    // This used to create a deadlock rather than returning an actual error.
-    assert!(cache.slice_set(&cache, 0, 0).is_err());
-    Ok(())
-}
-
 fn cat(device: &Device) -> Result<()> {
     // 1D
     let t1 = Tensor::new(&[3f32, 1., 4.], device)?;
@@ -786,31 +622,6 @@ fn cat(device: &Device) -> Result<()> {
             [2.0, 7.0, 1.0, 8.0, 2.0, 2.0, 7.0, 1.0, 8.0, 2.0]
         ]
     );
-
-    // 3D
-    let t1 = Tensor::arange(0, 48i64, device)?.reshape((2, 6, 4))?;
-    let t2 = Tensor::arange(100, 124i64, device)?.reshape((2, 3, 4))?;
-    let t3 = Tensor::arange(10000, 10032i64, device)?.reshape((2, 4, 4))?;
-
-    let t_cat = Tensor::cat(&[&t1, &t2, &t3], 1)?;
-
-    let t1 = t1.t()?.contiguous()?.t()?;
-    let t2 = t2.t()?.contiguous()?.t()?;
-    let t3 = t3.t()?.contiguous()?.t()?;
-    let t_cat2 = Tensor::cat(&[&t1, &t2, &t3], 1)?;
-
-    let diff = t_cat.eq(&t_cat2)?.to_dtype(DType::F32)?.sum_all()?;
-    assert_eq!(diff.to_vec0::<f32>()?, 104.0);
-    assert_eq!(t_cat.i((0, 0, 0))?.to_vec0::<i64>()?, 0);
-    assert_eq!(t_cat.i((0, 4, 0))?.to_vec0::<i64>()?, 16);
-    assert_eq!(t_cat.i((0, 5, 0))?.to_vec0::<i64>()?, 20);
-    assert_eq!(t_cat.i((1, 5, 0))?.to_vec0::<i64>()?, 44);
-    assert_eq!(t_cat.i((0, 6, 0))?.to_vec0::<i64>()?, 100);
-    assert_eq!(t_cat.i((1, 6, 0))?.to_vec0::<i64>()?, 112);
-    assert_eq!(t_cat.i((0, 6, 1))?.to_vec0::<i64>()?, 101);
-    assert_eq!(t_cat.i((0, 7, 1))?.to_vec0::<i64>()?, 105);
-    assert_eq!(t_cat.i((0, 12, 1))?.to_vec0::<i64>()?, 10013);
-    assert_eq!(t_cat.i((1, 12, 3))?.to_vec0::<i64>()?, 10031);
     Ok(())
 }
 
@@ -821,8 +632,6 @@ fn embeddings(device: &Device) -> Result<()> {
     assert_eq!(hs.to_vec2::<f32>()?, &[[0.0, 1.0], [4.0, 5.0], [2.0, 3.0]]);
     let hs = t.index_select(&ids, 0)?;
     assert_eq!(hs.to_vec2::<f32>()?, &[[0.0, 1.0], [4.0, 5.0], [2.0, 3.0]]);
-    let hs = t.index_select(&ids.to_dtype(DType::I64)?, 0)?;
-    assert_eq!(hs.to_vec2::<f32>()?, &[[0.0, 1.0], [4.0, 5.0], [2.0, 3.0]]);
     Ok(())
 }
 
@@ -850,47 +659,44 @@ fn index_select(device: &Device) -> Result<()> {
             [9.0, 10.0, 11.0]
         ]
     );
-    for dtype in [DType::U8, DType::U32, DType::I64] {
-        let ids = ids.to_dtype(dtype)?;
-        let hs = t.index_select(&ids, 1)?;
-        assert_eq!(
-            hs.to_vec2::<f32>()?,
-            &[
-                [0.0, 2.0, 1.0],
-                [3.0, 5.0, 4.0],
-                [6.0, 8.0, 7.0],
-                [9.0, 11.0, 10.0]
-            ]
-        );
-        let hs = t.index_select(&ids, 0)?;
-        assert_eq!(
-            hs.to_vec2::<f32>()?,
-            &[[0.0, 1.0, 2.0], [6.0, 7.0, 8.0], [3.0, 4.0, 5.0]]
-        );
-        // Prior to https://github.com/huggingface/candle/pull/1022
-        // There would be a bug where the last values in the result tensor would be set to 0.
-        let ids = Tensor::new(&[0u32, 2u32, 1u32, 0u32, 2u32, 1u32], device)?;
-        let hs = t.index_select(&ids, 0)?;
-        assert_eq!(
-            hs.to_vec2::<f32>()?,
-            &[
-                [0.0, 1.0, 2.0],
-                [6.0, 7.0, 8.0],
-                [3.0, 4.0, 5.0],
-                [0.0, 1.0, 2.0],
-                [6.0, 7.0, 8.0],
-                [3.0, 4.0, 5.0],
-            ]
-        );
+    let hs = t.index_select(&ids, 1)?;
+    assert_eq!(
+        hs.to_vec2::<f32>()?,
+        &[
+            [0.0, 2.0, 1.0],
+            [3.0, 5.0, 4.0],
+            [6.0, 8.0, 7.0],
+            [9.0, 11.0, 10.0]
+        ]
+    );
+    let hs = t.index_select(&ids, 0)?;
+    assert_eq!(
+        hs.to_vec2::<f32>()?,
+        &[[0.0, 1.0, 2.0], [6.0, 7.0, 8.0], [3.0, 4.0, 5.0]]
+    );
+    // Prior to https://github.com/huggingface/candle/pull/1022
+    // There would be a bug where the last values in the result tensor would be set to 0.
+    let ids = Tensor::new(&[0u32, 2u32, 1u32, 0u32, 2u32, 1u32], device)?;
+    let hs = t.index_select(&ids, 0)?;
+    assert_eq!(
+        hs.to_vec2::<f32>()?,
+        &[
+            [0.0, 1.0, 2.0],
+            [6.0, 7.0, 8.0],
+            [3.0, 4.0, 5.0],
+            [0.0, 1.0, 2.0],
+            [6.0, 7.0, 8.0],
+            [3.0, 4.0, 5.0],
+        ]
+    );
 
-        // Test when selecting dim > 0 with ids size different from elem count of
-        // target dim in source/input.
-        let ids = Tensor::new(&[1u32, 0u32, 1u32], device)?;
-        let t = Tensor::arange(1f32, 5f32, device)?.reshape((2, 2))?;
-        assert_eq!(t.to_vec2::<f32>()?, &[[1.0, 2.0], [3.0, 4.0]]);
-        let hs = t.index_select(&ids, 1)?;
-        assert_eq!(hs.to_vec2::<f32>()?, &[[2.0, 1.0, 2.0], [4.0, 3.0, 4.0]]);
-    }
+    // Test when selecting dim > 0 with ids size different from elem count of
+    // target dim in source/input.
+    let ids = Tensor::new(&[1u32, 0u32, 1u32], device)?;
+    let t = Tensor::arange(1f32, 5f32, device)?.reshape((2, 2))?;
+    assert_eq!(t.to_vec2::<f32>()?, &[[1.0, 2.0], [3.0, 4.0]]);
+    let hs = t.index_select(&ids, 1)?;
+    assert_eq!(hs.to_vec2::<f32>()?, &[[2.0, 1.0, 2.0], [4.0, 3.0, 4.0]]);
 
     Ok(())
 }
@@ -1049,280 +855,74 @@ fn gather(device: &Device) -> Result<()> {
     let ids = Tensor::new(&[[0u32, 2u32, 0u32], [0u32, 1u32, 1u32]], device)?;
     let hs = t.gather(&ids, 0)?;
     assert_eq!(hs.to_vec2::<f32>()?, &[[0.0, 7.0, 2.0], [0.0, 4.0, 5.0]]);
+    Ok(())
+}
 
-    // Random data
+fn matmul(device: &Device) -> Result<()> {
+    let data = vec![1.0f32, 2.0, 3.0, 4.0];
+    let a = Tensor::from_slice(&data, (2, 2), device)?;
+    let data = vec![1.0f32, 2.0, 3.0, 4.0];
+    let b = Tensor::from_slice(&data, (2, 2), device)?;
 
-    // Dim: 0
-    let t = Tensor::new(
-        &[
-            [
-                [108_f32, -47., 16., -56., -83., -130., 210.],
-                [253., 95., 151., 228., -210., -123., -127.],
-                [-9., -217., 2., -78., 163., 245., -204.],
-                [-246., 79., -238., 88., -226., -184., 171.],
-                [8., -48., -153., 234., -34., 166., -153.],
-                [124., 0., -10., -61., -242., -15., -238.],
-            ],
-            [
-                [12., -64., -199., 244., -240., 156., -128.],
-                [173., -57., 4., -198., 233., -110., 238.],
-                [95., 82., 0., 240., 53., -211., 209.],
-                [-122., 167., -212., 227., -144., 61., 118.],
-                [-63., -146., 200., 244., 168., -167., 116.],
-                [-125., -147., 110., -253., -178., -250., -18.],
-            ],
-            [
-                [57., 86., -50., 56., 92., 205., -78.],
-                [-137., -156., -18., 248., -61., -239., 14.],
-                [-248., -30., -50., -70., -251., 250., -83.],
-                [-221., 67., 72., 59., -24., -154., 232.],
-                [-144., -23., -74., 5., 93., 171., 205.],
-                [46., -77., -38., -226., 246., 161., -17.],
-            ],
-            [
-                [-153., -231., -236., 161., 126., 2., -22.],
-                [-229., -41., 209., 164., 234., 160., 57.],
-                [223., 254., -186., -162., -46., -160., -102.],
-                [65., 30., 213., -253., 59., 224., -154.],
-                [-82., -203., -177., 17., 31., -256., -246.],
-                [176., -135., -65., 54., -56., 210., 76.],
-            ],
-            [
-                [-10., -245., 168., 124., -14., -33., -178.],
-                [25., -43., -39., 132., -89., 169., 179.],
-                [187., -215., 32., -133., 87., -7., -168.],
-                [-224., -215., -5., -230., -58., -162., 128.],
-                [158., -137., -122., -100., -202., -83., 136.],
-                [30., -185., -144., 250., 209., -40., 127.],
-            ],
-            [
-                [-196., 108., -245., 122., 146., -228., 62.],
-                [-1., -66., 160., 137., 13., -172., -21.],
-                [244., 199., -164., 28., 119., -175., 198.],
-                [-62., 253., -162., 195., -95., -230., -211.],
-                [123., -72., -26., -107., -139., 64., 245.],
-                [11., -126., -182., 108., -12., 184., -127.],
-            ],
-            [
-                [-159., 126., 176., 161., 73., -111., -138.],
-                [-187., 214., -217., -33., -223., -201., -212.],
-                [-61., -120., -166., -172., -95., 53., 196.],
-                [-33., 86., 134., -152., 154., -53., 74.],
-                [186., -28., -154., -174., 141., -109., 217.],
-                [82., 35., 252., 145., 181., 74., -87.],
-            ],
-        ],
-        device,
-    )?;
+    let c = a.matmul(&b)?;
+    assert_eq!(c.to_vec2::<f32>()?, &[[7.0f32, 10.0], [15.0, 22.0]]);
 
-    let ids = Tensor::new(
-        &[
-            [
-                [6_u32, 6, 4, 3, 4, 4, 6],
-                [3, 3, 2, 4, 4, 4, 6],
-                [3, 3, 0, 2, 4, 6, 4],
-                [2, 5, 1, 2, 6, 6, 1],
-                [2, 1, 6, 5, 3, 2, 3],
-                [6, 1, 0, 1, 0, 2, 6],
-            ],
-            [
-                [4, 6, 4, 3, 3, 3, 2],
-                [4, 3, 2, 4, 4, 4, 6],
-                [2, 3, 0, 2, 4, 6, 4],
-                [6, 5, 1, 2, 6, 6, 1],
-                [4, 1, 6, 5, 3, 2, 3],
-                [1, 1, 0, 1, 0, 2, 6],
-            ],
-            [
-                [3, 6, 4, 3, 3, 3, 2],
-                [2, 3, 2, 4, 4, 4, 6],
-                [4, 3, 0, 2, 4, 6, 4],
-                [0, 5, 1, 2, 6, 6, 1],
-                [6, 1, 6, 5, 3, 2, 3],
-                [4, 1, 0, 1, 0, 2, 6],
-            ],
-            [
-                [0, 6, 4, 3, 3, 3, 2],
-                [5, 3, 2, 4, 4, 4, 6],
-                [0, 3, 0, 2, 4, 6, 4],
-                [3, 5, 1, 2, 6, 6, 1],
-                [0, 1, 6, 5, 3, 2, 3],
-                [3, 1, 0, 1, 0, 2, 6],
-            ],
-        ],
-        device,
-    )?;
+    let data = vec![1.0f32, 2.0];
+    let a = Tensor::from_slice(&data, (2, 1), device)?;
+    let data = vec![3.0f32, 4.0];
+    let b = Tensor::from_slice(&data, (1, 2), device)?;
+    let c = a.matmul(&b)?;
+    assert_eq!(c.to_vec2::<f32>()?, &[&[3.0, 4.0], &[6.0, 8.0]]);
 
-    let hs = t.gather(&ids, 0)?;
-    assert_eq!(
-        hs.to_vec3::<f32>()?,
-        &[
-            [
-                [-159_f32, 126., 168., 161., -14., -33., -138.],
-                [-229., -41., -18., 132., -89., 169., -212.],
-                [223., 254., 2., -70., 87., 53., -168.],
-                [-221., 253., -212., 59., 154., -53., 118.],
-                [-144., -146., -154., -107., 31., 171., -246.],
-                [82., -147., -10., -253., -242., 161., -87.]
-            ],
-            [
-                [-10., 126., 168., 161., 126., 2., -78.],
-                [25., -41., -18., 132., -89., 169., -212.],
-                [-248., 254., 2., -70., 87., 53., -168.],
-                [-33., 253., -212., 59., 154., -53., 118.],
-                [158., -146., -154., -107., 31., 171., -246.],
-                [-125., -147., -10., -253., -242., 161., -87.]
-            ],
-            [
-                [-153., 126., 168., 161., 126., 2., -78.],
-                [-137., -41., -18., 132., -89., 169., -212.],
-                [187., 254., 2., -70., 87., 53., -168.],
-                [-246., 253., -212., 59., 154., -53., 118.],
-                [186., -146., -154., -107., 31., 171., -246.],
-                [30., -147., -10., -253., -242., 161., -87.]
-            ],
-            [
-                [108., 126., 168., 161., 126., 2., -78.],
-                [-1., -41., -18., 132., -89., 169., -212.],
-                [-9., 254., 2., -70., 87., 53., -168.],
-                [65., 253., -212., 59., 154., -53., 118.],
-                [8., -146., -154., -107., 31., 171., -246.],
-                [176., -147., -10., -253., -242., 161., -87.]
-            ]
-        ]
-    );
+    let data: Vec<_> = (0..6).map(|i| i as f32).collect();
+    let a = Tensor::from_slice(&data, (2, 3), device)?;
+    let data: Vec<_> = (0..6).map(|i| (i + 2) as f32).collect();
+    let b = Tensor::from_slice(&data, (3, 2), device)?;
+    let c = a.matmul(&b)?;
+    assert_eq!(c.to_vec2::<f32>()?, &[&[16., 19.], &[52., 64.]]);
 
-    // Dim: 1
-    let t = Tensor::new(
-        &[
-            [
-                [-117_f32, -175., 69., -163.],
-                [200., 242., -21., -67.],
-                [179., 150., -126., -75.],
-                [-118., 38., -138., -13.],
-                [-221., 136., -185., 180.],
-                [58., 182., -204., -149.],
-            ],
-            [
-                [3., -148., -58., -154.],
-                [-43., 45., -108., 4.],
-                [-69., -249., -71., -21.],
-                [80., 110., -152., -235.],
-                [-88., 7., 92., -250.],
-                [-186., 207., -242., 98.],
-            ],
-            [
-                [238., 19., 64., -242.],
-                [-150., -97., 218., 58.],
-                [111., -233., 204., -212.],
-                [-242., -232., 83., 42.],
-                [153., 62., -251., 219.],
-                [-117., 36., -119., 10.],
-            ],
-            [
-                [215., 159., -169., -27.],
-                [-83., 101., -88., 169.],
-                [-205., 93., 225., -64.],
-                [-162., 240., 214., 23.],
-                [-112., 6., 21., 245.],
-                [-38., 113., 93., 215.],
-            ],
-            [
-                [91., -188., -148., 101.],
-                [74., 203., -35., 55.],
-                [-116., -130., -153., -96.],
-                [58., 22., -45., -194.],
-                [-221., -134., 73., 159.],
-                [-203., -254., 31., 235.],
-            ],
-            [
-                [105., -53., 61., 186.],
-                [-195., 234., 75., -1.],
-                [51., 139., 160., -108.],
-                [-173., -167., 161., 19.],
-                [83., -246., 156., -222.],
-                [109., 39., -149., 137.],
-            ],
-        ],
-        device,
-    )?;
+    let data: Vec<_> = (0..12).map(|i| i as f32).collect();
+    let a = Tensor::from_slice(&data, (2, 2, 3), device)?;
+    let data: Vec<_> = (0..12).map(|i| (i + 2) as f32).collect();
+    let b = Tensor::from_slice(&data, (2, 3, 2), device)?;
+    let expected = [[[16., 19.], [52., 64.]], [[214., 235.], [304., 334.]]];
 
-    let ids = Tensor::new(
-        &[
-            [[4_u32, 4, 4, 2]],
-            [[0, 4, 4, 3]],
-            [[1, 5, 3, 4]],
-            [[0, 3, 3, 2]],
-            [[1, 1, 5, 2]],
-            [[1, 4, 5, 4]],
-        ],
-        device,
-    )?;
+    let c = a.matmul(&b)?;
+    assert_eq!(c.to_vec3::<f32>()?, &expected);
 
-    let hs = t.gather(&ids, 1)?;
-    assert_eq!(
-        hs.to_vec3::<f32>()?,
-        &[
-            [[-221., 136., -185., -75.]],
-            [[3., 7., 92., -235.]],
-            [[-150., 36., 83., 219.]],
-            [[215., 240., 214., -64.]],
-            [[74., 203., 31., -96.]],
-            [[-195., -246., -149., -222.]]
-        ]
-    );
+    // Also perform the matmul on contiguous transposed versions.
+    let a_tt = a.t()?.contiguous()?.t()?;
+    assert!(!a_tt.is_contiguous());
+    assert_eq!(a.dims(), a_tt.dims());
+    assert_eq!(a_tt.stride(), &[6, 1, 2]);
 
-    // Dim: 2
-    let t = Tensor::new(
-        &[
-            [[-162_f32, 202.], [-126., -39.], [35., -65.], [1., 80.]],
-            [[37., 248.], [-191., 89.], [117., -40.], [-217., 220.]],
-        ],
-        device,
-    )?;
+    let b_tt = b.t()?.contiguous()?.t()?;
+    assert!(!b_tt.is_contiguous());
+    assert_eq!(b.dims(), b_tt.dims());
+    assert_eq!(b_tt.stride(), &[6, 1, 3]);
 
-    let ids = Tensor::new(&[[[1_u32], [0], [1], [1]], [[0], [1], [0], [1]]], device)?;
-
-    let hs = t.gather(&ids, 2)?;
-    assert_eq!(
-        hs.to_vec3::<f32>()?,
-        &[
-            [[202.], [-126.], [-65.], [80.]],
-            [[37.], [89.], [117.], [220.]]
-        ]
-    );
-
-    let t = Tensor::new(
-        &[
-            [[-21_f32, -197.], [194., 122.]],
-            [[255., -106.], [-191., 250.]],
-            [[33., -117.], [43., 10.]],
-            [[-130., 238.], [-217., -92.]],
-        ],
-        device,
-    )?;
-
-    let ids = Tensor::new(
-        &[
-            [[0_u32, 1], [1, 0]],
-            [[1, 0], [0, 1]],
-            [[0, 1], [0, 1]],
-            [[1, 0], [1, 0]],
-        ],
-        device,
-    )?;
-
-    let hs = t.gather(&ids, 2)?;
-    assert_eq!(
-        hs.to_vec3::<f32>()?,
-        &[
-            [[-21., -197.], [122., 194.]],
-            [[-106., 255.], [-191., 250.]],
-            [[33., -117.], [43., 10.]],
-            [[238., -130.], [-92., -217.]]
-        ]
-    );
+    assert_eq!(a_tt.matmul(&b)?.to_vec3::<f32>()?, &expected);
+    assert_eq!(a.matmul(&b_tt)?.to_vec3::<f32>()?, &expected);
+    assert_eq!(a_tt.matmul(&b_tt)?.to_vec3::<f32>()?, &expected);
+    Ok(())
+}
 
+fn broadcast_matmul(device: &Device) -> Result<()> {
+    let lhs = Tensor::randn(0f32, 1f32, (3, 1, 4, 5), device)?;
+    let rhs = Tensor::randn(0f32, 1f32, (6, 5, 2), device)?;
+    let out = lhs.broadcast_matmul(&rhs)?;
+    assert_eq!(out.dims(), &[3, 6, 4, 2]);
+    for idx1 in 0..3 {
+        for idx2 in 0..6 {
+            let out = out.i((idx1, idx2))?;
+            let lhs = lhs.i((idx1, 0))?;
+            let rhs = rhs.i(idx2)?;
+            let out2 = lhs.matmul(&rhs);
+            let sum_diff2 = (out - out2)?.sqr()?.sum_all()?;
+            // With cuda, we see errors of up to ~1e-12.
+            assert!(sum_diff2.to_vec0::<f32>()? < 1e-6)
+        }
+    }
     Ok(())
 }
 
@@ -1430,108 +1030,38 @@ fn broadcasting(device: &Device) -> Result<()> {
 fn randn(device: &Device) -> Result<()> {
     let tensor = Tensor::randn(0f32, 1f32, (5, 3), device)?;
     assert_eq!(tensor.dims(), [5, 3]);
-    // Check that the seed gets updated by checking that
-    // a new series of numbers is generated each time
-    let tensor2 = Tensor::randn(0f32, 1f32, (5, 3), device)?;
-    assert_ne!(tensor.to_vec2::<f32>()?, tensor2.to_vec2::<f32>()?);
     let tensor = Tensor::rand(0f32, 1f32, (5, 3), device)?;
     assert_eq!(tensor.dims(), [5, 3]);
-    // Check that the seed gets updated by checking that
-    // a new series of numbers is generated each time
-    let tensor2 = Tensor::rand(0f32, 1f32, (5, 3), device)?;
-    assert_ne!(tensor.to_vec2::<f32>()?, tensor2.to_vec2::<f32>()?);
-    // We do not expect deterministic elements at any index.
-    // There once was a bug that had a deterministic zero element in evenly sized tensors.
-    const N: usize = 2;
-    let v = (0..100)
-        .map(|_| Tensor::randn(0f32, 1f32, N, device).and_then(|t| t.to_vec1::<f32>()))
-        .collect::<Result<Vec<_>>>()?;
-    assert!(
-        (0..N).all(|i| v.windows(2).any(|pair| pair[0][i] != pair[1][i])),
-        "There are deterministic values in the randn tensors"
-    );
-    let v = (0..100)
-        .map(|_| Tensor::rand(0f32, 1f32, N, device).and_then(|t| t.to_vec1::<f32>()))
-        .collect::<Result<Vec<_>>>()?;
-    assert!(
-        (0..N).all(|i| v.windows(2).any(|pair| pair[0][i] != pair[1][i])),
-        "There are deterministic values in the rand tensors"
-    );
     Ok(())
 }
 
-fn zero_dim(device: &Device) -> Result<()> {
-    let t = Tensor::zeros((4, 0, 1), DType::F32, device)?;
-    assert_eq!(t.dims3()?, (4, 0, 1));
-    let t2 = Tensor::zeros((4, 3, 1), DType::F32, device)?;
-    let t_cat = Tensor::cat(&[&t, &t2], 1)?;
-    assert_eq!(t_cat.dims3()?, (4, 3, 1));
-    let t_cat = Tensor::cat(&[&t, &t], 1)?;
-    assert_eq!(t_cat.dims3()?, (4, 0, 1));
-    let t_unary = t.sqrt()?;
-    assert_eq!(t_unary.dims3()?, (4, 0, 1));
-    let t_plus = (&t + 1.)?;
-    assert_eq!(t_plus.dims3()?, (4, 0, 1));
-    let t_mm = t2.matmul(&t.t()?)?;
-    assert_eq!(t_mm.dims3()?, (4, 3, 0));
-    let t_mm = t.matmul(&t2.t()?)?;
-    assert_eq!(t_mm.dims3()?, (4, 0, 3));
-    let t_mm = t.t()?.matmul(&t)?;
-    assert_eq!(t_mm.dims3()?, (4, 1, 1));
-    Ok(())
-}
-
-test_device!(zeros, zeros_cpu, zeros_gpu, zeros_metal);
-test_device!(ones, ones_cpu, ones_gpu, ones_metal);
-test_device!(full, full_cpu, full_gpu, full_metal);
-test_device!(arange, arange_cpu, arange_gpu, arange_metal);
-test_device!(add_mul, add_mul_cpu, add_mul_gpu, add_mul_metal);
-test_device!(tensor_2d, tensor_2d_cpu, tensor_2d_gpu, tensor_2d_metal);
-test_device!(narrow, narrow_cpu, narrow_gpu, narrow_metal);
-test_device!(broadcast, broadcast_cpu, broadcast_gpu, broadcast_metal);
-test_device!(slice_set, ss_cpu, ss_gpu, ss_metal);
-test_device!(cat, cat_cpu, cat_gpu, cat_metal);
-test_device!(sum, sum_cpu, sum_gpu, sum_metal);
-test_device!(min, min_cpu, min_gpu, min_metal);
-test_device!(max, max_cpu, max_gpu, max_metal);
-test_device!(argmax, argmax_cpu, argmax_gpu, argmax_metal);
-test_device!(argmin, argmin_cpu, argmin_gpu, argmin_metal);
-test_device!(transpose, transpose_cpu, transpose_gpu, transpose_metal);
-test_device!(unary_op, unary_op_cpu, unary_op_gpu, unary_op_metal);
-test_device!(binary_op, binary_op_cpu, binary_op_gpu, binary_op_metal);
-test_device!(embeddings, embeddings_cpu, embeddings_gpu, embeddings_metal);
-test_device!(cmp, cmp_cpu, cmp_gpu, cmp_metal);
-test_device!(
-    broadcasting,
-    broadcasting_cpu,
-    broadcasting_gpu,
-    broadcasting_metal
-);
-test_device!(
-    index_select,
-    index_select_cpu,
-    index_select_gpu,
-    index_select_metal
-);
-test_device!(index_add, index_add_cpu, index_add_gpu, index_add_metal);
-test_device!(gather, gather_cpu, gather_gpu, gather_metal);
-test_device!(
-    scatter_add,
-    scatter_add_cpu,
-    scatter_add_gpu,
-    scatter_add_metal
-);
-test_device!(
-    slice_scatter,
-    slice_scatter_cpu,
-    slice_scatter_gpu,
-    slice_scatter_metal
-);
-test_device!(randn, randn_cpu, randn_gpu, randn_metal);
-test_device!(clamp, clamp_cpu, clamp_gpu, clamp_metal);
-test_device!(asort, asort_cpu, asort_gpu, asort_metal);
-test_device!(var, var_cpu, var_gpu, var_metal);
-test_device!(zero_dim, zero_dim_cpu, zero_dim_gpu, zero_dim_metal);
+test_device!(zeros, zeros_cpu, zeros_gpu);
+test_device!(ones, ones_cpu, ones_gpu);
+test_device!(add_mul, add_mul_cpu, add_mul_gpu);
+test_device!(tensor_2d, tensor_2d_cpu, tensor_2d_gpu);
+test_device!(narrow, narrow_cpu, narrow_gpu);
+test_device!(broadcast, broadcast_cpu, broadcast_gpu);
+test_device!(cat, cat_cpu, cat_gpu);
+test_device!(sum, sum_cpu, sum_gpu);
+test_device!(min, min_cpu, min_gpu);
+test_device!(max, max_cpu, max_gpu);
+test_device!(argmax, argmax_cpu, argmax_gpu);
+test_device!(argmin, argmin_cpu, argmin_gpu);
+test_device!(transpose, transpose_cpu, transpose_gpu);
+test_device!(unary_op, unary_op_cpu, unary_op_gpu);
+test_device!(binary_op, binary_op_cpu, binary_op_gpu);
+test_device!(embeddings, embeddings_cpu, embeddings_gpu);
+test_device!(cmp, cmp_cpu, cmp_gpu);
+test_device!(matmul, matmul_cpu, matmul_gpu);
+test_device!(broadcast_matmul, broadcast_matmul_cpu, broadcast_matmul_gpu);
+test_device!(broadcasting, broadcasting_cpu, broadcasting_gpu);
+test_device!(index_select, index_select_cpu, index_select_gpu);
+test_device!(index_add, index_add_cpu, index_add_gpu);
+test_device!(gather, gather_cpu, gather_gpu);
+test_device!(scatter_add, scatter_add_cpu, scatter_add_gpu);
+test_device!(slice_scatter, slice_scatter_cpu, slice_scatter_gpu);
+test_device!(randn, randn_cpu, randn_gpu);
+test_device!(clamp, clamp_cpu, clamp_gpu);
 
 // There was originally a bug on the CPU implementation for randn
 // https://github.com/huggingface/candle/issues/381
@@ -1559,126 +1089,3 @@ fn pad_with_same() -> Result<()> {
     );
     Ok(())
 }
-
-#[test]
-fn i64_abs() -> Result<()> {
-    let t = Tensor::new(&[-42i64, 1337], &Device::Cpu)?;
-    let t = t.abs()?;
-    assert_eq!(t.to_vec1::<i64>()?, [42, 1337]);
-    Ok(())
-}
-
-#[test]
-fn tril_triu_eye() -> Result<()> {
-    let t = Tensor::tril2(4, DType::F32, &Device::Cpu)?;
-    assert_eq!(
-        t.to_vec2::<f32>()?,
-        [
-            [1.0, 0.0, 0.0, 0.0],
-            [1.0, 1.0, 0.0, 0.0],
-            [1.0, 1.0, 1.0, 0.0],
-            [1.0, 1.0, 1.0, 1.0]
-        ],
-    );
-    let t = Tensor::triu2(4, DType::F32, &Device::Cpu)?;
-    assert_eq!(
-        t.to_vec2::<f32>()?,
-        [
-            [1.0, 1.0, 1.0, 1.0],
-            [0.0, 1.0, 1.0, 1.0],
-            [0.0, 0.0, 1.0, 1.0],
-            [0.0, 0.0, 0.0, 1.0]
-        ]
-    );
-    let t = Tensor::eye(4, DType::F32, &Device::Cpu)?;
-    assert_eq!(
-        t.to_vec2::<f32>()?,
-        [
-            [1.0, 0.0, 0.0, 0.0],
-            [0.0, 1.0, 0.0, 0.0],
-            [0.0, 0.0, 1.0, 0.0],
-            [0.0, 0.0, 0.0, 1.0]
-        ]
-    );
-    Ok(())
-}
-
-#[test]
-fn cumsum() -> Result<()> {
-    let t = &[3f32, 1., 4., 1., 5.];
-    let t = Tensor::new(t, &Device::Cpu)?;
-    assert_eq!(t.cumsum(0)?.to_vec1::<f32>()?, [3., 4., 8., 9., 14.]);
-    let t = t.unsqueeze(1)?;
-    assert_eq!(
-        t.cumsum(0)?.to_vec2::<f32>()?,
-        [[3.0], [4.0], [8.0], [9.0], [14.0]]
-    );
-    assert_eq!(
-        t.cumsum(1)?.to_vec2::<f32>()?,
-        [[3.0], [1.0], [4.0], [1.0], [5.0]]
-    );
-    let t = &[[3f32, 1., 4., 1., 5.], [2., 1., 7., 8., 2.]];
-    let t = Tensor::new(t, &Device::Cpu)?;
-    assert_eq!(
-        t.cumsum(1)?.to_vec2::<f32>()?,
-        [[3.0, 4.0, 8.0, 9.0, 14.0], [2.0, 3.0, 10.0, 18.0, 20.0]],
-    );
-    assert_eq!(
-        t.cumsum(0)?.to_vec2::<f32>()?,
-        [[3.0, 1.0, 4.0, 1.0, 5.0], [5.0, 2.0, 11.0, 9.0, 7.0]]
-    );
-    Ok(())
-}
-
-/// A helper function for floating point comparison. Both a and b must be 1D Tensor and contains the same amount of data.
-/// Assertion passes if the difference of all pairs of a and b is smaller than epsilon.
-fn assert_close(a: &Tensor, b: &Tensor, epsilon: f64) -> Result<()> {
-    let a_vec: Vec<f64> = a.to_vec1()?;
-    let b_vec: Vec<f64> = b.to_vec1()?;
-
-    assert_eq!(a_vec.len(), b_vec.len());
-    for (a, b) in a_vec.iter().zip(b_vec.iter()) {
-        assert!((a - b).abs() < epsilon);
-    }
-    Ok(())
-}
-
-#[test]
-fn log_sum_exp() -> Result<()> {
-    let input = Tensor::new(
-        &[
-            [[1f64, 2., 3.], [4., 5., 6.]],
-            [[-1000.0, -999.0, -1001.0], [1000.0, 999.0, 1001.0]],
-        ],
-        &Device::Cpu,
-    )?;
-
-    let output = input.log_sum_exp(D::Minus1)?;
-    // The expectations obtained from pytorch.
-    let expected = Tensor::new(&[[3.4076, 6.4076], [-998.5924, 1001.4076]], &Device::Cpu)?;
-    assert_eq!(output.dims(), expected.dims());
-    assert_close(&output.flatten_all()?, &expected.flatten_all()?, 0.00001)?;
-
-    assert_eq!(
-        input.log_sum_exp((0, 1))?.to_vec1::<f64>()?,
-        [1000.0, 999.0, 1001.0]
-    );
-    assert_eq!(
-        input.log_sum_exp(())?.to_vec3::<f64>()?,
-        input.to_vec3::<f64>()?
-    );
-
-    Ok(())
-}
-
-#[test]
-fn pow() -> Result<()> {
-    let lhs = Tensor::new(&[[1f32, 2., 3.], [4., 5., 6.]], &Device::Cpu)?;
-    let rhs = (&lhs - 2.)?;
-    let res = lhs.pow(&rhs)?;
-    assert_eq!(
-        test_utils::to_vec2_round(&res, 3)?,
-        [[1.0, 1.0, 3.0], [16.0, 125.0, 1296.0]]
-    );
-    Ok(())
-}

candle-datasets/Cargo.toml

@@ -11,8 +11,8 @@ readme = "README.md"
 
 [dependencies]
 byteorder = { workspace = true }
-candle = { workspace = true }
-candle-nn = { workspace = true }
+candle = { path = "../candle-core", version = "0.3.0", package = "candle-core" }
+candle-nn = { path = "../candle-nn", version = "0.3.0" }
 hf-hub = { workspace = true}
 intel-mkl-src = { workspace = true, optional = true }
 memmap2 = { workspace = true }

candle-datasets/src/batcher.rs

@@ -78,7 +78,7 @@ impl<I: Iterator<Item = Tensor>> Iterator for Batcher<Iter1<I>> {
             match self.inner.inner.next() {
                 Some(item) => items.push(item),
                 None => {
-                    if self.return_last_incomplete_batch && !items.is_empty() {
+                    if self.return_last_incomplete_batch {
                         break;
                     }
                     return None;
@@ -102,7 +102,7 @@ impl<I: Iterator<Item = (Tensor, Tensor)>> Iterator for Batcher<Iter2<I>> {
                     ys.push(y)
                 }
                 None => {
-                    if self.return_last_incomplete_batch && !xs.is_empty() && !ys.is_empty() {
+                    if self.return_last_incomplete_batch {
                         break;
                     }
                     return None;
@@ -127,7 +127,7 @@ impl<I: Iterator<Item = Result<Tensor>>> Iterator for Batcher<IterResult1<I>> {
             match self.inner.inner.next() {
                 Some(item) => items.push(item),
                 None => {
-                    if self.return_last_incomplete_batch && !items.is_empty() {
+                    if self.return_last_incomplete_batch {
                         break;
                     }
                     return None;
@@ -154,7 +154,7 @@ impl<I: Iterator<Item = Result<(Tensor, Tensor)>>> Iterator for Batcher<IterResu
                 }
                 Some(Err(err)) => errs.push(err),
                 None => {
-                    if self.return_last_incomplete_batch && !xs.is_empty() && !ys.is_empty() {
+                    if self.return_last_incomplete_batch {
                         break;
                     }
                     return None;

candle-datasets/src/nlp/tinystories.rs

@@ -87,7 +87,7 @@ impl<'a> DatasetRandomIter<'a> {
     }
 }
 
-impl Iterator for DatasetRandomIter<'_> {
+impl<'a> Iterator for DatasetRandomIter<'a> {
     type Item = Result<(Tensor, Tensor)>;
 
     fn next(&mut self) -> Option<Self::Item> {

candle-datasets/src/vision/cifar.rs

@@ -4,9 +4,7 @@
 //! <https://www.cs.toronto.edu/~kriz/cifar.html>
 //! The binary version of the dataset is used.
 use crate::vision::Dataset;
-use candle::{DType, Device, Error, Result, Tensor};
-use hf_hub::{api::sync::Api, Repo, RepoType};
-use parquet::file::reader::{FileReader, SerializedFileReader};
+use candle::{DType, Device, Result, Tensor};
 use std::fs::File;
 use std::io::{BufReader, Read};
 
@@ -62,58 +60,3 @@ pub fn load_dir<T: AsRef<std::path::Path>>(dir: T) -> Result<Dataset> {
         labels: 10,
     })
 }
-
-fn load_parquet(parquet: SerializedFileReader<std::fs::File>) -> Result<(Tensor, Tensor)> {
-    let samples = parquet.metadata().file_metadata().num_rows() as usize;
-    let mut buffer_images: Vec<u8> = Vec::with_capacity(samples * 1_024);
-    let mut buffer_labels: Vec<u8> = Vec::with_capacity(samples);
-    for row in parquet.into_iter().flatten() {
-        for (_name, field) in row.get_column_iter() {
-            if let parquet::record::Field::Group(subrow) = field {
-                for (_name, field) in subrow.get_column_iter() {
-                    if let parquet::record::Field::Bytes(value) = field {
-                        let image = image::load_from_memory(value.data()).unwrap();
-                        buffer_images.extend(image.to_rgb8().as_raw());
-                    }
-                }
-            } else if let parquet::record::Field::Long(label) = field {
-                buffer_labels.push(*label as u8);
-            }
-        }
-    }
-    let images = (Tensor::from_vec(buffer_images, (samples, 3, 32, 32), &Device::Cpu)?
-        .to_dtype(DType::U8)?
-        / 255.)?;
-    let labels = Tensor::from_vec(buffer_labels, (samples,), &Device::Cpu)?;
-    Ok((images, labels))
-}
-
-pub fn load() -> Result<Dataset> {
-    let api = Api::new().map_err(|e| Error::Msg(format!("Api error: {e}")))?;
-    let dataset_id = "cifar10".to_string();
-    let repo = Repo::with_revision(
-        dataset_id,
-        RepoType::Dataset,
-        "refs/convert/parquet".to_string(),
-    );
-    let repo = api.repo(repo);
-    let test_parquet_filename = repo
-        .get("plain_text/test/0000.parquet")
-        .map_err(|e| Error::Msg(format!("Api error: {e}")))?;
-    let train_parquet_filename = repo
-        .get("plain_text/train/0000.parquet")
-        .map_err(|e| Error::Msg(format!("Api error: {e}")))?;
-    let test_parquet = SerializedFileReader::new(std::fs::File::open(test_parquet_filename)?)
-        .map_err(|e| Error::Msg(format!("Parquet error: {e}")))?;
-    let train_parquet = SerializedFileReader::new(std::fs::File::open(train_parquet_filename)?)
-        .map_err(|e| Error::Msg(format!("Parquet error: {e}")))?;
-    let (test_images, test_labels) = load_parquet(test_parquet)?;
-    let (train_images, train_labels) = load_parquet(train_parquet)?;
-    Ok(crate::vision::Dataset {
-        train_images,
-        train_labels,
-        test_images,
-        test_labels,
-        labels: 10,
-    })
-}

candle-datasets/src/vision/mnist.rs

@@ -89,7 +89,7 @@ fn load_parquet(parquet: SerializedFileReader<std::fs::File>) -> Result<(Tensor,
 
 pub fn load() -> Result<crate::vision::Dataset> {
     let api = Api::new().map_err(|e| Error::Msg(format!("Api error: {e}")))?;
-    let dataset_id = "ylecun/mnist".to_string();
+    let dataset_id = "mnist".to_string();
     let repo = Repo::with_revision(
         dataset_id,
         RepoType::Dataset,

candle-examples/Cargo.toml

@@ -11,65 +11,50 @@ readme = "README.md"
 
 [dependencies]
 accelerate-src = { workspace = true, optional = true }
-candle = { workspace = true }
-candle-datasets = { workspace = true, optional = true }
-candle-nn = { workspace = true }
-candle-transformers = { workspace = true }
-candle-flash-attn = { workspace = true, optional = true }
-candle-onnx = { workspace = true, optional = true }
-
-csv = "1.3.0"
+candle = { path = "../candle-core", version = "0.3.0", package = "candle-core" }
+candle-datasets = { path = "../candle-datasets", version = "0.3.0" }
+candle-nn = { path = "../candle-nn", version = "0.3.0" }
+candle-transformers = { path = "../candle-transformers", version = "0.3.0" }
+candle-flash-attn = { path = "../candle-flash-attn", version = "0.3.0", optional = true }
 cudarc = { workspace = true, optional = true }
 half = { workspace = true, optional = true }
-hf-hub = { workspace = true, features = ["tokio"] }
 image = { workspace = true }
 intel-mkl-src = { workspace = true, optional = true }
 num-traits = { workspace = true }
-palette = { version = "0.7.6", optional = true }
-enterpolation = { version = "0.2.1", optional = true}
-pyo3 = { version = "0.22.0", features = ["auto-initialize", "abi3-py311"], optional = true }
+pyo3 = { version = "0.19.0", features = ["auto-initialize"], optional = true }
 rayon = { workspace = true }
-rubato = { version = "0.15.0", optional = true }
 safetensors = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
-symphonia = { version = "0.5.3", features = ["all"], optional = true }
 tokenizers = { workspace = true, features = ["onig"] }
-cpal = { version = "0.15.2", optional = true }
-pdf2image = { version = "0.1.2" , optional = true}
 
 [dev-dependencies]
 anyhow = { workspace = true }
 byteorder = { workspace = true }
 clap = { workspace = true }
+hf-hub = { workspace = true, features=["tokio"]}
 imageproc = { workspace = true }
 memmap2 = { workspace = true }
 rand = { workspace = true }
-ab_glyph = { workspace = true }
+rusttype = { workspace = true }
 tracing = { workspace = true }
 tracing-chrome = { workspace = true }
 tracing-subscriber = { workspace = true }
+wav = { workspace = true }
 # Necessary to disambiguate with tokio in wasm examples which are 1.28.1
-tokio = "1.43.0"
+tokio = "1.29.1"
 
 [build-dependencies]
 anyhow = { workspace = true }
-bindgen_cuda = { version = "0.1.1", optional = true }
 
 [features]
 default = []
 accelerate = ["dep:accelerate-src", "candle/accelerate", "candle-nn/accelerate", "candle-transformers/accelerate"]
-cuda = ["candle/cuda", "candle-nn/cuda", "candle-transformers/cuda", "dep:bindgen_cuda"]
+cuda = ["candle/cuda", "candle-nn/cuda", "candle-transformers/cuda"]
 cudnn = ["candle/cudnn"]
 flash-attn = ["cuda", "candle-transformers/flash-attn", "dep:candle-flash-attn"]
 mkl = ["dep:intel-mkl-src", "candle/mkl", "candle-nn/mkl", "candle-transformers/mkl"]
 nccl = ["cuda", "cudarc/nccl", "dep:half"]
-onnx = ["candle-onnx"]
-metal = ["candle/metal", "candle-nn/metal"]
-microphone = ["cpal", "rubato"]
-encodec = ["cpal", "symphonia", "rubato"]
-mimi = ["cpal", "symphonia", "rubato"]
-depth_anything_v2 = ["palette", "enterpolation"]
 
 [[example]]
 name = "llama_multiprocess"
@@ -78,47 +63,3 @@ required-features = ["cuda", "nccl", "flash-attn"]
 [[example]]
 name = "reinforcement-learning"
 required-features = ["pyo3"]
-
-[[example]]
-name = "onnx"
-required-features = ["onnx"]
-
-[[example]]
-name = "onnx_basics"
-required-features = ["onnx"]
-
-[[example]]
-name = "whisper"
-required-features = ["symphonia"]
-
-[[example]]
-name = "whisper-microphone"
-required-features = ["microphone"]
-
-[[example]]
-name = "mnist-training"
-required-features = ["candle-datasets"]
-
-[[example]]
-name = "llama2-c"
-required-features = ["candle-datasets"]
-
-[[example]]
-name = "mimi"
-required-features = ["mimi"]
-
-[[example]]
-name = "encodec"
-required-features = ["encodec"]
-
-[[example]]
-name = "depth_anything_v2"
-required-features = ["depth_anything_v2"]
-
-[[example]]
-name = "silero-vad"
-required-features = ["onnx"]
-
-[[example]]
-name = "colpali"
-required-features = ["pdf2image"]

candle-examples/build.rs

@@ -4,28 +4,235 @@ use std::io::Write;
 use std::path::PathBuf;
 
 struct KernelDirectories {
-    kernel_glob: &'static str,
+    kernel_dir: &'static str,
     rust_target: &'static str,
     include_dirs: &'static [&'static str],
 }
 
-const KERNEL_DIRS: [KernelDirectories; 1] = [KernelDirectories {
-    kernel_glob: "examples/custom-ops/kernels/*.cu",
+const DIRS: [KernelDirectories; 1] = [KernelDirectories {
+    kernel_dir: "examples/custom-ops/kernels/",
     rust_target: "examples/custom-ops/cuda_kernels.rs",
     include_dirs: &[],
 }];
 
+impl KernelDirectories {
+    fn maybe_build_ptx(
+        &self,
+        cu_file: &std::path::Path,
+        ptx_file: &std::path::Path,
+        compute_cap: usize,
+    ) -> Result<()> {
+        let should_compile = if ptx_file.exists() {
+            let ptx_modified = ptx_file.metadata()?.modified()?;
+            let cu_modified = cu_file.metadata()?.modified()?;
+            cu_modified.duration_since(ptx_modified).is_ok()
+        } else {
+            true
+        };
+        if should_compile {
+            #[cfg(feature = "cuda")]
+            {
+                let mut command = std::process::Command::new("nvcc");
+                let out_dir = ptx_file.parent().context("no parent for ptx file")?;
+                let include_dirs: Vec<String> =
+                    self.include_dirs.iter().map(|c| format!("-I{c}")).collect();
+                command
+                    .arg(format!("--gpu-architecture=sm_{compute_cap}"))
+                    .arg("--ptx")
+                    .args(["--default-stream", "per-thread"])
+                    .args(["--output-directory", out_dir.to_str().unwrap()])
+                    .arg(format!("-I/{}", self.kernel_dir))
+                    .args(include_dirs)
+                    .arg(cu_file);
+                let output = command
+                    .spawn()
+                    .context("failed spawning nvcc")?
+                    .wait_with_output()?;
+                if !output.status.success() {
+                    anyhow::bail!(
+                    "nvcc error while compiling {cu_file:?}:\n\n# stdout\n{:#}\n\n# stderr\n{:#}",
+                    String::from_utf8_lossy(&output.stdout),
+                    String::from_utf8_lossy(&output.stderr)
+                )
+                }
+            }
+            #[cfg(not(feature = "cuda"))]
+            std::fs::OpenOptions::new()
+                .create(true)
+                .write(true)
+                .open(ptx_file)?;
+        }
+        Ok(())
+    }
+    fn process(&self, out_dir: &std::path::Path, compute_cap: usize) -> Result<()> {
+        println!("cargo:rerun-if-changed={}", self.kernel_dir);
+        let kernel_dir = PathBuf::from(self.kernel_dir);
+        let out_dir = out_dir.join(self.kernel_dir);
+        if !out_dir.exists() {
+            std::fs::create_dir_all(&out_dir)?;
+        }
+        let mut cu_files = vec![];
+        let mut cuh_files = vec![];
+        for file in std::fs::read_dir(kernel_dir)?.flatten() {
+            let file = file.path();
+            match file.extension().and_then(|v| v.to_str()) {
+                Some("cu") => cu_files.push(file),
+                Some("cuh") => cuh_files.push(file),
+                _ => {}
+            }
+        }
+
+        let mut ptx_paths = vec![];
+        for cu_file in cu_files.iter() {
+            let file_stem = cu_file
+                .file_stem()
+                .with_context(|| format!("no stem {cu_file:?}"))?;
+            let file_stem = file_stem.to_string_lossy().into_owned();
+            let ptx_file = out_dir.join(&format!("{file_stem}.ptx"));
+            self.maybe_build_ptx(cu_file, &ptx_file, compute_cap)?;
+            ptx_paths.push(ptx_file);
+        }
+
+        let regenerate_rs_file = true;
+        if regenerate_rs_file {
+            let mut file = std::fs::File::create(self.rust_target)?;
+            for ptx_path in ptx_paths {
+                let name = ptx_path
+                    .file_stem()
+                    .context("empty stem")?
+                    .to_string_lossy();
+                file.write_all(b"#[rustfmt::skip]\n")?;
+                let const_definition = format!(
+                    r#"pub const {}: &str = include_str!(concat!(env!("OUT_DIR"), "/{}/{name}.ptx"));"#,
+                    name.to_uppercase().replace('.', "_"),
+                    self.kernel_dir,
+                );
+                file.write_all(const_definition.as_bytes())?;
+                file.write_all(b"\n")?;
+            }
+        }
+        Ok(())
+    }
+}
+
 fn main() -> Result<()> {
     println!("cargo:rerun-if-changed=build.rs");
 
+    let out_dir = std::env::var("OUT_DIR").context("OUT_DIR not set")?;
+    let out_dir = PathBuf::from(out_dir);
     #[cfg(feature = "cuda")]
-    {
-        for kdir in KERNEL_DIRS.iter() {
-            let builder = bindgen_cuda::Builder::default().kernel_paths_glob(kdir.kernel_glob);
-            println!("cargo:info={builder:?}");
-            let bindings = builder.build_ptx().unwrap();
-            bindings.write(kdir.rust_target).unwrap()
-        }
+    set_cuda_include_dir()?;
+    #[cfg(feature = "cuda")]
+    let compute_cap = compute_cap()?;
+    #[cfg(not(feature = "cuda"))]
+    let compute_cap = 0;
+    for d in DIRS {
+        d.process(&out_dir, compute_cap)?
     }
     Ok(())
 }
+
+fn set_cuda_include_dir() -> Result<()> {
+    // NOTE: copied from cudarc build.rs.
+    let env_vars = [
+        "CUDA_PATH",
+        "CUDA_ROOT",
+        "CUDA_TOOLKIT_ROOT_DIR",
+        "CUDNN_LIB",
+    ];
+    let env_vars = env_vars
+        .into_iter()
+        .map(std::env::var)
+        .filter_map(Result::ok)
+        .map(Into::<PathBuf>::into);
+
+    let roots = [
+        "/usr",
+        "/usr/local/cuda",
+        "/opt/cuda",
+        "/usr/lib/cuda",
+        "C:/Program Files/NVIDIA GPU Computing Toolkit",
+        "C:/CUDA",
+    ];
+    let roots = roots.into_iter().map(Into::<PathBuf>::into);
+    let root = env_vars
+        .chain(roots)
+        .find(|path| path.join("include").join("cuda.h").is_file())
+        .context("cannot find include/cuda.h")?;
+    println!(
+        "cargo:rustc-env=CUDA_INCLUDE_DIR={}",
+        root.join("include").display()
+    );
+    Ok(())
+}
+
+#[allow(unused)]
+fn compute_cap() -> Result<usize> {
+    // Grab compute code from nvidia-smi
+    let mut compute_cap = {
+        let out = std::process::Command::new("nvidia-smi")
+                    .arg("--query-gpu=compute_cap")
+                    .arg("--format=csv")
+                    .output()
+                    .context("`nvidia-smi` failed. Ensure that you have CUDA installed and that `nvidia-smi` is in your PATH.")?;
+        let out = std::str::from_utf8(&out.stdout).context("stdout is not a utf8 string")?;
+        let mut lines = out.lines();
+        assert_eq!(
+            lines.next().context("missing line in stdout")?,
+            "compute_cap"
+        );
+        let cap = lines
+            .next()
+            .context("missing line in stdout")?
+            .replace('.', "");
+        cap.parse::<usize>()
+            .with_context(|| format!("cannot parse as int {cap}"))?
+    };
+
+    // Grab available GPU codes from nvcc and select the highest one
+    let max_nvcc_code = {
+        let out = std::process::Command::new("nvcc")
+                    .arg("--list-gpu-code")
+                    .output()
+                    .expect("`nvcc` failed. Ensure that you have CUDA installed and that `nvcc` is in your PATH.");
+        let out = std::str::from_utf8(&out.stdout).unwrap();
+
+        let out = out.lines().collect::<Vec<&str>>();
+        let mut codes = Vec::with_capacity(out.len());
+        for code in out {
+            let code = code.split('_').collect::<Vec<&str>>();
+            if !code.is_empty() && code.contains(&"sm") {
+                if let Ok(num) = code[1].parse::<usize>() {
+                    codes.push(num);
+                }
+            }
+        }
+        codes.sort();
+        if !codes.contains(&compute_cap) {
+            anyhow::bail!(
+                "nvcc cannot target gpu arch {compute_cap}. Available nvcc targets are {codes:?}."
+            );
+        }
+        *codes.last().unwrap()
+    };
+
+    // If nvidia-smi compute_cap is higher than the highest gpu code from nvcc,
+    // then choose the highest gpu code in nvcc
+    if compute_cap > max_nvcc_code {
+        println!(
+            "cargo:warning=Lowering gpu arch {compute_cap} to max nvcc target {max_nvcc_code}."
+        );
+        compute_cap = max_nvcc_code;
+    }
+
+    println!("cargo:rerun-if-env-changed=CUDA_COMPUTE_CAP");
+
+    if let Ok(compute_cap_str) = std::env::var("CUDA_COMPUTE_CAP") {
+        compute_cap = compute_cap_str
+            .parse::<usize>()
+            .with_context(|| format!("cannot parse as usize '{compute_cap_str}'"))?;
+        println!("cargo:warning=Using gpu arch {compute_cap} from $CUDA_COMPUTE_CAP");
+    }
+    println!("cargo:rustc-env=CUDA_COMPUTE_CAP=sm_{compute_cap}");
+    Ok(compute_cap)
+}