79 lines
2.2 KiB
C++
79 lines
2.2 KiB
C++
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//============================================================================
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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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#include <vtkm/cont/DIYMemoryManagement.h>
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#include <vtkm/cont/DeviceAdapterList.h>
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#include <vtkm/cont/DeviceAdapterTag.h>
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#include <vtkm/cont/RuntimeDeviceInformation.h>
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#include <vtkm/cont/serial/DeviceAdapterSerial.h>
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#ifdef VTKM_ENABLE_GPU_MPI
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#include <vtkm/cont/kokkos/DeviceAdapterKokkos.h>
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#endif
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namespace
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{
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thread_local vtkm::cont::DeviceAdapterId DIYCurrentDeviceAdaptor =
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vtkm::cont::DeviceAdapterTagSerial();
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vtkm::cont::internal::DeviceAdapterMemoryManagerBase& GetMemoryManager(
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vtkm::cont::DeviceAdapterId device)
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{
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return vtkm::cont::RuntimeDeviceInformation().GetMemoryManager(device);
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}
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vtkmdiy::MemoryManagement GetDIYMemoryManagement(vtkm::cont::DeviceAdapterId device)
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{
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return vtkmdiy::MemoryManagement(
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[device](int, size_t n) {
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return static_cast<char*>(GetMemoryManager(device).AllocateRawPointer(n));
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},
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[device](const char* p) { GetMemoryManager(device).DeleteRawPointer(const_cast<char*>(p)); },
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[device](char* dest, const char* src, size_t count) {
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GetMemoryManager(device).CopyDeviceToDeviceRawPointer(src, dest, count);
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});
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}
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}
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namespace vtkm
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{
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namespace cont
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{
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vtkm::cont::DeviceAdapterId GetDIYDeviceAdapter()
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{
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return DIYCurrentDeviceAdaptor;
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}
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void DIYMasterExchange(vtkmdiy::Master& master, bool remote)
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{
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#ifdef VTKM_ENABLE_GPU_MPI
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try
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{
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DIYCurrentDeviceAdaptor = vtkm::cont::DeviceAdapterTagKokkos();
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master.exchange(remote, GetDIYMemoryManagement(vtkm::cont::DeviceAdapterTagKokkos()));
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DIYCurrentDeviceAdaptor = vtkm::cont::DeviceAdapterTagSerial();
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}
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catch (...)
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{
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DIYCurrentDeviceAdaptor = vtkm::cont::DeviceAdapterTagSerial();
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throw;
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}
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#else
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DIYCurrentDeviceAdaptor = vtkm::cont::DeviceAdapterTagSerial();
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master.exchange(remote);
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#endif
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}
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}
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}
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