#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