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Fix crash when CUDA device is disabled

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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.
This commit is contained in:
Kenneth Moreland 2024-05-03 17:03:20 -04:00
parent 5634a09b95
commit f42f59d685
2 changed files with 29 additions and 6 deletions
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7
docs/changelog/safe-cuda-runtime-config.md Normal file
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@ -0,0 +1,7 @@
# Fix crash when CUDA device is disabled
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.

28
vtkm/cont/cuda/internal/RuntimeDeviceConfigurationCuda.h
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@ -10,6 +10,7 @@
#ifndef vtk_m_cont_cuda_internal_RuntimeDeviceConfigurationCuda_h
#define vtk_m_cont_cuda_internal_RuntimeDeviceConfigurationCuda_h
#include <vtkm/cont/cuda/internal/DeviceAdapterRuntimeDetectorCuda.h>
#include <vtkm/cont/cuda/internal/DeviceAdapterTagCuda.h>
#include <vtkm/cont/internal/RuntimeDeviceConfiguration.h>
@ -36,13 +37,28 @@ class RuntimeDeviceConfiguration<vtkm::cont::DeviceAdapterTagCuda>
public:
RuntimeDeviceConfiguration<vtkm::cont::DeviceAdapterTagCuda>()
{
int tmp;
VTKM_CUDA_CALL(cudaGetDeviceCount(&tmp));
this->CudaDeviceCount = tmp;
this->CudaProp.resize(this->CudaDeviceCount);
for (int i = 0; i < this->CudaDeviceCount; ++i)
this->CudaDeviceCount = 0;
this->CudaProp.clear();
vtkm::cont::DeviceAdapterRuntimeDetector<vtkm::cont::DeviceAdapterTagCuda> detector;
if (detector.Exists())
{
VTKM_CUDA_CALL(cudaGetDeviceProperties(&this->CudaProp[i], i));
try
{
int tmp;
VTKM_CUDA_CALL(cudaGetDeviceCount(&tmp));
this->CudaDeviceCount = tmp;
this->CudaProp.resize(this->CudaDeviceCount);
for (int i = 0; i < this->CudaDeviceCount; ++i)
{
VTKM_CUDA_CALL(cudaGetDeviceProperties(&this->CudaProp[i], i));
}
}
catch (...)
{
VTKM_LOG_F(vtkm::cont::LogLevel::Error,
"Error retrieving CUDA device information. Disabling.");
this->CudaDeviceCount = 0;
}
}
}