Struct Sdpa

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pub struct Sdpa;

Implementations§

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impl Sdpa

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pub fn run_attention( &self, q: &Tensor, k: &Tensor, v: &Tensor, mask: Option<&Tensor>, flash_params: Option<&FlashParams>, sdpa_params: &SdpaParams, ) -> Result<Tensor, Error>

Computes softmax(QK^T*sqrt(d_k))V

Inputs:

q: (b_sz, n_attn_heads, q_len, head_dim)
k: (b_sz, n_kv_heads, q_len, head_dim)
v: (b_sz, n_kv_heads, q_len, head_dim)

The attention implementation is dispatched as follows:

If use_flash_attn == true, use a flash attention V2 kernel
If using CUDA and the cuBLASLt kernel is initialized, then it will use an optimized version.
Otherwise, use the “naive” SDPA implementation.

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impl UnwindSafe for Sdpa

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