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Support for phi-2. (#1429)

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* Support for phi-2.

* Use the v2 naming scheme.
This commit is contained in:
Laurent Mazare
2023-12-13 20:59:29 -06:00
committed by GitHub
parent 4cb443d00a
commit 2b3a018be7
2 changed files with 62 additions and 14 deletions
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42
candle-examples/examples/phi/main.rs
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@ -123,6 +123,8 @@ enum WhichModel {
V1,
#[value(name = "1.5")]
V1_5,
#[value(name = "2")]
V2,
PuffinPhiV2,
PhiHermes,
}
@ -225,6 +227,7 @@ fn main() -> Result<()> {
match args.model {
WhichModel::V1 => "microsoft/phi-1".to_string(),
WhichModel::V1_5 => "microsoft/phi-1_5".to_string(),
WhichModel::V2 => "microsoft/phi-2".to_string(),
WhichModel::PuffinPhiV2 | WhichModel::PhiHermes => {
"lmz/candle-quantized-phi".to_string()
}
@ -241,7 +244,9 @@ fn main() -> Result<()> {
match args.model {
WhichModel::V1 => "refs/pr/2".to_string(),
WhichModel::V1_5 => "refs/pr/18".to_string(),
WhichModel::PuffinPhiV2 | WhichModel::PhiHermes => "main".to_string(),
WhichModel::V2 | WhichModel::PuffinPhiV2 | WhichModel::PhiHermes => {
"main".to_string()
}
}
}
}
@ -250,27 +255,32 @@ fn main() -> Result<()> {
let tokenizer_filename = match args.tokenizer {
Some(file) => std::path::PathBuf::from(file),
None => match args.model {
WhichModel::V1 | WhichModel::V1_5 => repo.get("tokenizer.json")?,
WhichModel::V1 | WhichModel::V1_5 | WhichModel::V2 => repo.get("tokenizer.json")?,
WhichModel::PuffinPhiV2 | WhichModel::PhiHermes => {
repo.get("tokenizer-puffin-phi-v2.json")?
}
},
};
let filename = match args.weight_file {
Some(weight_file) => std::path::PathBuf::from(weight_file),
let filenames = match args.weight_file {
Some(weight_file) => vec![std::path::PathBuf::from(weight_file)],
None => {
if args.quantized {
match args.model {
WhichModel::V1 => repo.get("model-v1-q4k.gguf")?,
WhichModel::V1_5 => repo.get("model-q4k.gguf")?,
WhichModel::PuffinPhiV2 => repo.get("model-puffin-phi-v2-q4k.gguf")?,
WhichModel::PhiHermes => repo.get("model-phi-hermes-1_3B-q4k.gguf")?,
WhichModel::V1 => vec![repo.get("model-v1-q4k.gguf")?],
WhichModel::V1_5 => vec![repo.get("model-q4k.gguf")?],
WhichModel::V2 => anyhow::bail!("phi-2 is not supported in quantized mode"),
WhichModel::PuffinPhiV2 => vec![repo.get("model-puffin-phi-v2-q4k.gguf")?],
WhichModel::PhiHermes => vec![repo.get("model-phi-hermes-1_3B-q4k.gguf")?],
}
} else {
match args.model {
WhichModel::V1 | WhichModel::V1_5 => repo.get("model.safetensors")?,
WhichModel::PuffinPhiV2 => repo.get("model-puffin-phi-v2.safetensors")?,
WhichModel::PhiHermes => repo.get("model-phi-hermes-1_3B.safetensors")?,
WhichModel::V1 | WhichModel::V1_5 => vec![repo.get("model.safetensors")?],
WhichModel::V2 => vec![
repo.get("model-00001-of-00002.safetensors")?,
repo.get("model-00002-of-00002.safetensors")?,
],
WhichModel::PuffinPhiV2 => vec![repo.get("model-puffin-phi-v2.safetensors")?],
WhichModel::PhiHermes => vec![repo.get("model-phi-hermes-1_3B.safetensors")?],
}
}
}
@ -282,17 +292,21 @@ fn main() -> Result<()> {
let config = match args.model {
WhichModel::V1 => Config::v1(),
WhichModel::V1_5 => Config::v1_5(),
WhichModel::V2 => Config::v2(),
WhichModel::PuffinPhiV2 => Config::puffin_phi_v2(),
WhichModel::PhiHermes => Config::phi_hermes_1_3b(),
};
let (model, device) = if args.quantized {
let vb = candle_transformers::quantized_var_builder::VarBuilder::from_gguf(&filename)?;
let vb = candle_transformers::quantized_var_builder::VarBuilder::from_gguf(&filenames[0])?;
let model = QMixFormer::new(&config, vb)?;
(Model::Quantized(model), Device::Cpu)
} else {
let device = candle_examples::device(args.cpu)?;
let vb = unsafe { VarBuilder::from_mmaped_safetensors(&[filename], DType::F32, &device)? };
let model = MixFormer::new(&config, vb)?;
let vb = unsafe { VarBuilder::from_mmaped_safetensors(&filenames, DType::F32, &device)? };
let model = match args.model {
WhichModel::V2 => MixFormer::new_v2(&config, vb)?,
_ => MixFormer::new(&config, vb)?,
};
(Model::MixFormer(model), device)
};
println!("loaded the model in {:?}", start.elapsed());