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CUDA: fix race condition in FA vector kernels #13742

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Merged
merged 1 commit into from
May 24, 2025
Merged

CUDA: fix race condition in FA vector kernels #13742

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1 change: 1 addition & 0 deletions ggml/src/ggml-cuda/fattn-vec-f16.cuh
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Original file line number Diff line number Diff line change
Expand Up @@ -212,6 +212,7 @@ static __global__ void flash_attn_vec_ext_f16(
}
}
if (__all_sync(0xFFFFFFFF, skip)) {
__syncthreads();
continue;
}
#endif // GGML_USE_HIP
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1 change: 1 addition & 0 deletions ggml/src/ggml-cuda/fattn-vec-f32.cuh
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Expand Up @@ -217,6 +217,7 @@ static __global__ void flash_attn_vec_ext_f32(
}
}
if (__all_sync(0xFFFFFFFF, skip)) {
__syncthreads();
continue;
}
#endif // GGML_USE_HIP
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