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[CHUNK_PREFILL] fix tiling shape #51

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Merged
merged 2 commits into from
Oct 21, 2025
Merged

[CHUNK_PREFILL] fix tiling shape #51

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d99872b
fix tiling shape
YizhouZ Oct 16, 2025
73b27a7
use empty instead of zero
YizhouZ Oct 20, 2025
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8 changes: 4 additions & 4 deletions csrc/xpu/cutlass_kernels/chunk_prefill_kernel.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -292,10 +292,10 @@ class FMHAPrefillChunk {

Tensor mQ_mkl = cute::get_xe_tensor(
make_shape(seq_len_qo, head_size_qk, 1)); //(m,k,l)
Tensor mK_cache_nkl = cute::get_xe_tensor(make_shape(
seq_len_kv_cache, head_size_qk * num_heads_kv, 1)); // (n_cache,k,l)
Tensor mV_cache_nkl = cute::get_xe_tensor(make_shape(
head_size_vo * num_heads_kv, seq_len_kv_cache, 1)); // (n_cache,k,l)
Tensor mK_cache_nkl = cute::get_xe_tensor(
make_shape(seq_len_kv_cache, head_size_qk, 1)); // (n_cache,k,l)
Tensor mV_cache_nkl = cute::get_xe_tensor(
make_shape(head_size_vo, seq_len_kv_cache, 1)); // (n_cache,k,l)

Tensor mQ_mk = mQ_mkl(_, _, 0);
Tensor mK_cache_nk = mK_cache_nkl(_, _, 0); // (n_cache, k)
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