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Tensor mutability (#154)

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* Working towards tensor mutability.

* Use a ref-cell to provide tensor mutability.
This commit is contained in:
Laurent Mazare
2023-07-13 11:04:40 +01:00
committed by GitHub
parent a3663ce2f2
commit 50b0946a2d
14 changed files with 124 additions and 88 deletions
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6
candle-examples/examples/falcon/model.rs
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@ -183,7 +183,7 @@ impl FalconRotaryEmbedding {
past_kv_len: usize,
) -> Result<(Tensor, Tensor)> {
let (_batch, seq_len, _head_dim) = query.shape().r3()?;
let (cos, sin) = self.cos_sin(MAX_SEQ_LEN, &query.device(), query.dtype())?;
let (cos, sin) = self.cos_sin(MAX_SEQ_LEN, query.device(), query.dtype())?;
let cos = cos.narrow(0, past_kv_len, seq_len)?;
let sin = sin.narrow(0, past_kv_len, seq_len)?;
let qs = (query.broadcast_mul(&cos)? + &rotate_half(query)?.broadcast_mul(&sin)?)?;
@ -194,7 +194,7 @@ impl FalconRotaryEmbedding {
fn masked_fill(on_false: &Tensor, mask: &Tensor, on_true: f32) -> Result<Tensor> {
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())?.broadcast_as(shape.dims())?;
let m = mask.where_cond(&on_true, on_false)?;
Ok(m)
}
@ -471,7 +471,7 @@ impl Falcon {
Some((k, _)) => k.dim(1)?,
None => 0,
};
let causal_mask = prepare_attn_mask(b_sz, seq_len)?.to_device(&input_ids.device())?;
let causal_mask = prepare_attn_mask(b_sz, seq_len)?.to_device(input_ids.device())?;
for block in self.blocks.iter_mut() {
hidden_state = block.forward(&hidden_state, &causal_mask, past_kv_len)?;
}