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CUDA: Fix loop unrolling for BW in mul_mat_q_stream_k_fixup #19053

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Merged
JohannesGaessler merged 1 commit into from
Feb 3, 2026
Merged

CUDA: Fix loop unrolling for BW in mul_mat_q_stream_k_fixup #19053

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19 changes: 13 additions & 6 deletions ggml/src/ggml-cuda/mmq.cuh
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Original file line number Diff line number Diff line change
Expand Up @@ -3697,13 +3697,20 @@ static __global__ void mul_mat_q(
tile_x_max_i, tile_y_max_j, kb0_start, kb0_stop);
}


template <ggml_type type, int mmq_x, bool need_check>
static __global__ void mul_mat_q_stream_k_fixup(
const int32_t * ids_dst, const int32_t * expert_bounds, float * __restrict__ dst, const float * __restrict__ tmp_last_tile,
const int ncols_x, const int nrows_x, const int ncols_dst, const int stride_col_dst,
const int nchannels_y, const int stride_channel_dst, const int nsamples_y, const int stride_sample_dst,
const int ncols_max) {
static __global__ void mul_mat_q_stream_k_fixup(const int32_t * ids_dst,
const int32_t * expert_bounds,
float * __restrict__ dst,
const float * __restrict__ tmp_last_tile,
const int ncols_x,
const int nrows_x,
const int ncols_dst,
const size_t stride_col_dst,
const int nchannels_y,
const size_t stride_channel_dst,
const int nsamples_y,
const size_t stride_sample_dst,
const int ncols_max) {
constexpr int mmq_y = get_mmq_y_device();
constexpr int qk = ggml_cuda_type_traits<type>::qk;
constexpr int ITER_K = get_iter_k(type);
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