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xe: sdpa: Fix KQ gemm alignment for the K tensor #2283

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xe: sdpa: Fix KQ gemm alignment for the K tensor #2283

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4 changes: 3 additions & 1 deletion src/gpu/intel/ocl/micro_sdpa.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -264,7 +264,9 @@ status_t micro_sdpa_t::pd_t::init_microkernels(impl::engine_t *engine) {

problem_kq.B.layout = MatrixLayout::Pr;
problem_kq.C.layout = MatrixLayout::T;
problem_kq.A.setAlignment(alignmentForLD(d->head_size() * problem.Ta));
const memory_desc_wrapper key_mdw(key_md());
auto ldk = gemm_desc_t::get_ld(*key_md()) * key_mdw.data_type_size();
problem_kq.A.setAlignment(alignmentForLD(ldk));
problem_kq.B.setAlignment(64); // Q is packed in VNNI format in SLM
problem_kq.B.crosspack = 2;
problem_kq.B.tileR = into<uint16_t>(d_max());
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