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device.cpp 1.7 kB

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  1. /**
  2. * \file dnn/test/cuda/megcore/device.cpp
  3. * MegEngine is Licensed under the Apache License, Version 2.0 (the "License")
  4. *
  5. * Copyright (c) 2014-2020 Megvii Inc. All rights reserved.
  6. *
  7. * Unless required by applicable law or agreed to in writing,
  8. * software distributed under the License is distributed on an
  9. * "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  10. */
  11. #include "megcore.h"
  12. #include "test/common/utils.h"
  13. #include "./fixture.h"
  14. #include "test/cuda/utils.h"
  15. #include <cuda_runtime_api.h>
  16. TEST_F(MegcoreCUDA, DEVICE)
  17. {
  18. for (int id = -1; id < std::min(nr_devices(), 2); ++id) {
  19. megcoreDeviceHandle_t handle;
  20. megcoreCreateDeviceHandle(&handle, megcorePlatformCUDA,
  21. id, 0);
  22. int deviceID;
  23. megcoreGetDeviceID(handle, &deviceID);
  24. ASSERT_EQ(id, deviceID);
  25. megcorePlatform_t platform;
  26. megcoreGetPlatform(handle, &platform);
  27. ASSERT_EQ(megcorePlatformCUDA, platform);
  28. unsigned int flags;
  29. megcoreGetDeviceFlags(handle, &flags);
  30. ASSERT_EQ(0u, flags);
  31. size_t memAlignmentInBytes;
  32. megcoreGetMemAlignment(handle, &memAlignmentInBytes);
  33. megcoreActivate(handle);
  34. void *ptr;
  35. megcoreMalloc(handle, &ptr, 256);
  36. megcoreFree(handle, ptr);
  37. megcoreDestroyDeviceHandle(handle);
  38. }
  39. }
  40. TEST_F(MegcoreCUDA, ERROR_MSG) {
  41. #if MEGDNN_ENABLE_EXCEPTIONS
  42. megcoreDeviceHandle_t handle;
  43. ASSERT_THROW(
  44. megcoreCreateDeviceHandle(
  45. &handle, megcorePlatformCUDA, nr_devices(), 0),
  46. megdnn::test::MegDNNError);
  47. cudaGetLastError();
  48. cuda_check(cudaGetLastError());
  49. #endif
  50. }
  51. // vim: syntax=cpp.doxygen

MegEngine 安装包中集成了使用 GPU 运行代码所需的 CUDA 环境,不用区分 CPU 和 GPU 版。 如果想要运行 GPU 程序,请确保机器本身配有 GPU 硬件设备并安装好驱动。 如果你想体验在云端 GPU 算力平台进行深度学习开发的感觉,欢迎访问 MegStudio 平台