24 lines
532 B
C++
24 lines
532 B
C++
#pragma once
|
|
|
|
#include <ATen/cuda/Exceptions.h>
|
|
|
|
#include <cuda.h>
|
|
#include <cuda_runtime.h>
|
|
|
|
namespace at::cuda {
|
|
|
|
inline Device getDeviceFromPtr(void* ptr) {
|
|
cudaPointerAttributes attr{};
|
|
|
|
AT_CUDA_CHECK(cudaPointerGetAttributes(&attr, ptr));
|
|
|
|
#if !defined(USE_ROCM)
|
|
TORCH_CHECK(attr.type != cudaMemoryTypeUnregistered,
|
|
"The specified pointer resides on host memory and is not registered with any CUDA device.");
|
|
#endif
|
|
|
|
return {c10::DeviceType::CUDA, static_cast<DeviceIndex>(attr.device)};
|
|
}
|
|
|
|
} // namespace at::cuda
|