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UPSTREAM PR #22070: ggml-cuda: gate native ue4m3 conversion to sm_90+ #1358

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UPSTREAM PR #22070: ggml-cuda: gate native ue4m3 conversion to sm_90+ #1358

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2 changes: 1 addition & 1 deletion ggml/src/ggml-cuda/common.cuh
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Original file line number Diff line number Diff line change
Expand Up @@ -813,7 +813,7 @@ static __device__ __forceinline__ float ggml_cuda_ue4m3_to_fp32(uint8_t x) {
const __hip_fp8_e4m3_fnuz xf = *reinterpret_cast<const __hip_fp8_e4m3_fnuz *>(&bits);
return static_cast<float>(xf) / 2;
#else
#if defined(FP8_AVAILABLE) && !defined(GGML_USE_HIP)
#if defined(FP8_AVAILABLE) && !defined(GGML_USE_HIP) && defined(__CUDA_ARCH__) && __CUDA_ARCH__ >= 900
const uint32_t bits = x * (x != 0x7F && x != 0xFF); // Convert NaN to 0.0f to match CPU implementation.
const __nv_fp8_e4m3 xf = *reinterpret_cast<const __nv_fp8_e4m3 *>(&bits);
return static_cast<float>(xf) / 2;
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