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CUDA: fix half2 -> half conversion for HIP (llama/15529)

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Johannes Gäßler 2025-08-23 21:37:06 +02:00 committed by Georgi Gerganov
parent 2f6288c33c
commit b0d15e1eb6
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ggml/src/ggml-cuda/fattn-tile-f16.cu
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@ -258,7 +258,7 @@ static __global__ void flash_attn_tile_ext_f16(
const half val = hexp(sink - kqmax[j0/nwarps]);
kqsum[j0/nwarps] = kqsum[j0/nwarps] * KQ_max_scale;
if (threadIdx.x == 0) {
kqsum[j0/nwarps].x = __hadd(kqsum[j0/nwarps].x, val);
kqsum[j0/nwarps].x = __hadd(__low2half(kqsum[j0/nwarps]), val);
}
#pragma unroll