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