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Use F16 for moondream on cuda. (#2013)

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This commit is contained in:
Laurent Mazare
2024-04-04 23:30:10 +02:00
committed by GitHub
parent c5626b8271
commit c87381fc96
2 changed files with 17 additions and 8 deletions
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12
candle-examples/examples/moondream/main.rs
View File

@ -283,6 +283,11 @@ async fn main() -> anyhow::Result<()> {
let start = std::time::Instant::now(); let start = std::time::Instant::now();
let device = candle_examples::device(args.cpu)?; let device = candle_examples::device(args.cpu)?;
let config = moondream::Config::v2(); let config = moondream::Config::v2();
let dtype = if device.is_cuda() && !args.quantized {
DType::F16
} else {
DType::F32
};
let model = if args.quantized { let model = if args.quantized {
let vb = candle_transformers::quantized_var_builder::VarBuilder::from_gguf( let vb = candle_transformers::quantized_var_builder::VarBuilder::from_gguf(
&model_file, &model_file,
@ -291,15 +296,16 @@ async fn main() -> anyhow::Result<()> {
let model = quantized_moondream::Model::new(&config, vb)?; let model = quantized_moondream::Model::new(&config, vb)?;
Model::Quantized(model) Model::Quantized(model)
} else { } else {
let vb = let vb = unsafe { VarBuilder::from_mmaped_safetensors(&[model_file], dtype, &device)? };
unsafe { VarBuilder::from_mmaped_safetensors(&[model_file], DType::F32, &device)? };
let model = moondream::Model::new(&config, vb)?; let model = moondream::Model::new(&config, vb)?;
Model::Moondream(model) Model::Moondream(model)
}; };
println!("loaded the model in {:?}", start.elapsed()); println!("loaded the model in {:?}", start.elapsed());
let start = std::time::Instant::now(); let start = std::time::Instant::now();
let image = load_image(args.image)?.to_device(&device)?; let image = load_image(args.image)?
.to_device(&device)?
.to_dtype(dtype)?;
let image_embeds = image.unsqueeze(0)?; let image_embeds = image.unsqueeze(0)?;
let image_embeds = match model { let image_embeds = match model {
Model::Moondream(ref m) => image_embeds.apply(m.vision_encoder())?, Model::Moondream(ref m) => image_embeds.apply(m.vision_encoder())?,

13
candle-transformers/src/models/mixformer.rs
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@ -135,7 +135,9 @@ fn get_mask(size: usize, device: &Device) -> Result<Tensor> {
fn masked_fill(on_false: &Tensor, mask: &Tensor, on_true: f32) -> Result<Tensor> { fn masked_fill(on_false: &Tensor, mask: &Tensor, on_true: f32) -> Result<Tensor> {
let shape = mask.shape(); let shape = mask.shape();
let on_true = Tensor::new(on_true, on_false.device())?.broadcast_as(shape.dims())?; let on_true = Tensor::new(on_true, on_false.device())?
.to_dtype(on_false.dtype())?
.broadcast_as(shape.dims())?;
let m = mask.where_cond(&on_true, on_false)?; let m = mask.where_cond(&on_true, on_false)?;
Ok(m) Ok(m)
} }
@ -147,7 +149,7 @@ struct RotaryEmbedding {
} }
impl RotaryEmbedding { impl RotaryEmbedding {
fn new(dim: usize, max_seq_len: usize, dev: &Device) -> Result<Self> { fn new(dim: usize, max_seq_len: usize, dtype: DType, dev: &Device) -> Result<Self> {
let inv_freq: Vec<_> = (0..dim) let inv_freq: Vec<_> = (0..dim)
.step_by(2) .step_by(2)
.map(|i| 1f32 / 10000f32.powf(i as f32 / dim as f32)) .map(|i| 1f32 / 10000f32.powf(i as f32 / dim as f32))
@ -159,8 +161,8 @@ impl RotaryEmbedding {
.reshape((max_seq_len, 1))?; .reshape((max_seq_len, 1))?;
let freqs = t.matmul(&inv_freq)?; let freqs = t.matmul(&inv_freq)?;
Ok(Self { Ok(Self {
sin: freqs.sin()?, sin: freqs.sin()?.to_dtype(dtype)?,
cos: freqs.cos()?, cos: freqs.cos()?.to_dtype(dtype)?,
}) })
} }
@ -274,7 +276,8 @@ impl MHA {
let op_size = cfg.n_embd; let op_size = cfg.n_embd;
let wqkv = linear(cfg.n_embd, 3 * op_size, vb.pp("Wqkv"))?; let wqkv = linear(cfg.n_embd, 3 * op_size, vb.pp("Wqkv"))?;
let out_proj = linear(op_size, cfg.n_embd, vb.pp("out_proj"))?; let out_proj = linear(op_size, cfg.n_embd, vb.pp("out_proj"))?;
let rotary_emb = RotaryEmbedding::new(cfg.rotary_dim, MAX_SEQ_LEN, vb.device())?; let rotary_emb =
RotaryEmbedding::new(cfg.rotary_dim, MAX_SEQ_LEN, vb.dtype(), vb.device())?;
let softmax_scale = 1f64 / (head_dim as f64).sqrt(); let softmax_scale = 1f64 / (head_dim as f64).sqrt();
Ok(Self { Ok(Self {
wqkv, wqkv,