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CUDA: fix FA kernel selection logic #21271

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Merged
ggerganov merged 1 commit into from
Apr 1, 2026
Merged

CUDA: fix FA kernel selection logic #21271

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7 changes: 7 additions & 0 deletions ggml/src/ggml-cuda/fattn.cu
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Original file line number Diff line number Diff line change
Expand Up @@ -340,7 +340,14 @@ static best_fattn_kernel ggml_cuda_get_best_fattn_kernel(const int device, const
case 128:
case 112:
case 256:
if (V->ne[0] != K->ne[0]) {
return BEST_FATTN_KERNEL_NONE;
}
break;
case 512:
if (V->ne[0] != K->ne[0]) {
return BEST_FATTN_KERNEL_NONE;
}
if (!gqa_opt_applies) {
return BEST_FATTN_KERNEL_NONE;
}
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