mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 21:33:55 +00:00
f42f59d685
There was an issue where if VTK-m was compiled with CUDA support but then run on a computer where no CUDA device was available, an inappropriate exception was thrown (instead of just disabling the device). The initialization code should now properly check for the existance of a CUDA device.
119 lines
3.5 KiB
C++
119 lines
3.5 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#ifndef vtk_m_cont_cuda_internal_RuntimeDeviceConfigurationCuda_h
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#define vtk_m_cont_cuda_internal_RuntimeDeviceConfigurationCuda_h
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#include <vtkm/cont/cuda/internal/DeviceAdapterRuntimeDetectorCuda.h>
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#include <vtkm/cont/cuda/internal/DeviceAdapterTagCuda.h>
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#include <vtkm/cont/internal/RuntimeDeviceConfiguration.h>
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#include <vtkm/cont/Logging.h>
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#include <vtkm/cont/cuda/ErrorCuda.h>
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VTKM_THIRDPARTY_PRE_INCLUDE
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#include <cuda.h>
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VTKM_THIRDPARTY_POST_INCLUDE
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#include <vector>
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namespace vtkm
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{
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namespace cont
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{
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namespace internal
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{
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template <>
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class RuntimeDeviceConfiguration<vtkm::cont::DeviceAdapterTagCuda>
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: public vtkm::cont::internal::RuntimeDeviceConfigurationBase
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{
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public:
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RuntimeDeviceConfiguration<vtkm::cont::DeviceAdapterTagCuda>()
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{
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this->CudaDeviceCount = 0;
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this->CudaProp.clear();
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vtkm::cont::DeviceAdapterRuntimeDetector<vtkm::cont::DeviceAdapterTagCuda> detector;
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if (detector.Exists())
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{
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try
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{
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int tmp;
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VTKM_CUDA_CALL(cudaGetDeviceCount(&tmp));
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this->CudaDeviceCount = tmp;
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this->CudaProp.resize(this->CudaDeviceCount);
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for (int i = 0; i < this->CudaDeviceCount; ++i)
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{
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VTKM_CUDA_CALL(cudaGetDeviceProperties(&this->CudaProp[i], i));
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}
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}
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catch (...)
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{
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VTKM_LOG_F(vtkm::cont::LogLevel::Error,
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"Error retrieving CUDA device information. Disabling.");
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this->CudaDeviceCount = 0;
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}
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}
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}
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VTKM_CONT vtkm::cont::DeviceAdapterId GetDevice() const override final
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{
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return vtkm::cont::DeviceAdapterTagCuda{};
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}
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VTKM_CONT virtual RuntimeDeviceConfigReturnCode SetDeviceInstance(
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const vtkm::Id& value) override final
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{
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if (value >= this->CudaDeviceCount)
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{
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VTKM_LOG_S(
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vtkm::cont::LogLevel::Error,
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"Failed to set CudaDeviceInstance, supplied id exceeds the number of available devices: "
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<< value << " >= " << this->CudaDeviceCount);
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return RuntimeDeviceConfigReturnCode::INVALID_VALUE;
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}
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VTKM_CUDA_CALL(cudaSetDevice(value));
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return RuntimeDeviceConfigReturnCode::SUCCESS;
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}
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VTKM_CONT virtual RuntimeDeviceConfigReturnCode GetDeviceInstance(
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vtkm::Id& value) const override final
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{
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int tmp;
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VTKM_CUDA_CALL(cudaGetDevice(&tmp));
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value = tmp;
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return RuntimeDeviceConfigReturnCode::SUCCESS;
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}
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VTKM_CONT virtual RuntimeDeviceConfigReturnCode GetMaxDevices(
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vtkm::Id& value) const override final
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{
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value = this->CudaDeviceCount;
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return RuntimeDeviceConfigReturnCode::SUCCESS;
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}
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/// A function only available for use by the Cuda instance of this class
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/// Used to grab the CudaDeviceProp structs for all available devices
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VTKM_CONT RuntimeDeviceConfigReturnCode
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GetCudaDeviceProp(std::vector<cudaDeviceProp>& value) const
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{
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value = CudaProp;
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return RuntimeDeviceConfigReturnCode::SUCCESS;
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}
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private:
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std::vector<cudaDeviceProp> CudaProp;
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vtkm::Id CudaDeviceCount;
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};
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} // namespace vtkm::cont::internal
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} // namespace vtkm::cont
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} // namespace vtkm
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#endif //vtk_m_cont_cuda_internal_RuntimeDeviceConfigurationCuda_h
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