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Add ROCm 6.4.3+ support #498

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Add ROCm 6.4.3+ support #498

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11 changes: 9 additions & 2 deletions csrc/cuda/utils.cuh
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Original file line number Diff line number Diff line change
Expand Up @@ -6,13 +6,20 @@
AT_ASSERTM(x.device().is_cuda(), #x " must be CUDA tensor")
#define CHECK_INPUT(x) AT_ASSERTM(x, "Input mismatch")

__device__ __inline__ at::Half __shfl_up_sync(const unsigned mask,
// On ROCm, __shfl_*_sync requires a 64-bit mask; on CUDA it's 32-bit.
#ifdef USE_ROCM
using warp_mask_t = unsigned long long;
#else
using warp_mask_t = unsigned int;
#endif

__device__ __inline__ at::Half __shfl_up_sync(const warp_mask_t mask,
const at::Half var,
const unsigned int delta) {
return __shfl_up_sync(mask, var.operator __half(), delta);
}

__device__ __inline__ at::Half __shfl_down_sync(const unsigned mask,
__device__ __inline__ at::Half __shfl_down_sync(const warp_mask_t mask,
const at::Half var,
const unsigned int delta) {
return __shfl_down_sync(mask, var.operator __half(), delta);
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