cuda-samples/Samples/5_Domain_Specific/simpleVulkanMMAP/VulkanCudaInterop.h
2022-01-13 11:35:24 +05:30

83 lines
3.0 KiB
C

/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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*/
#pragma once
#ifndef __VKCUDA_H__
#define __VKCUDA_H__
#include <cuda_runtime_api.h>
#include "cuda.h"
#define CUDA_DRIVER_API
#include <helper_cuda.h>
bool isDeviceCompatible(void *Uuid, size_t size) {
int cudaDevice = cudaInvalidDeviceId;
int deviceCount;
checkCudaErrors(cudaGetDeviceCount(&deviceCount));
for (int i = 0; i < deviceCount; ++i) {
cudaDeviceProp devProp = {};
checkCudaErrors(cudaGetDeviceProperties(&devProp, i));
if (!memcmp(&devProp.uuid, Uuid, size)) {
cudaDevice = i;
break;
}
}
if (cudaDevice == cudaInvalidDeviceId) {
return false;
}
int deviceSupportsHandle = 0;
int attributeVal = 0;
int deviceComputeMode = 0;
checkCudaErrors(cuDeviceGetAttribute(
&deviceComputeMode, CU_DEVICE_ATTRIBUTE_COMPUTE_MODE, cudaDevice));
checkCudaErrors(cuDeviceGetAttribute(
&attributeVal, CU_DEVICE_ATTRIBUTE_VIRTUAL_ADDRESS_MANAGEMENT_SUPPORTED,
cudaDevice));
#if defined(__linux__)
checkCudaErrors(cuDeviceGetAttribute(
&deviceSupportsHandle,
CU_DEVICE_ATTRIBUTE_HANDLE_TYPE_POSIX_FILE_DESCRIPTOR_SUPPORTED,
cudaDevice));
#else
checkCudaErrors(cuDeviceGetAttribute(
&deviceSupportsHandle,
CU_DEVICE_ATTRIBUTE_HANDLE_TYPE_WIN32_HANDLE_SUPPORTED, cudaDevice));
#endif
if ((deviceComputeMode != CU_COMPUTEMODE_DEFAULT) || !attributeVal ||
!deviceSupportsHandle) {
return false;
}
return true;
}
#endif // __VKCUDA_H__