554bc3d369
Instead of always using the first enabled device, now TryExecute can be told which device at runtime to use.
182 lines
4.9 KiB
C++
182 lines
4.9 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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// 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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// Copyright 2016 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2016 UT-Battelle, LLC.
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// Copyright 2016 Los Alamos National Security.
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//
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// Under the terms of Contract DE-NA0003525 with NTESS,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#include <vtkm/cont/RuntimeDeviceTracker.h>
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#include <vtkm/cont/DeviceAdapter.h>
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#include <vtkm/cont/DeviceAdapterListTag.h>
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#include <vtkm/cont/ErrorBadValue.h>
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#include <vtkm/cont/cuda/DeviceAdapterCuda.h>
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#include <vtkm/cont/serial/DeviceAdapterSerial.h>
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#include <vtkm/cont/tbb/DeviceAdapterTBB.h>
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#include <algorithm>
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#include <map>
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#include <mutex>
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#include <sstream>
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#include <thread>
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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 detail
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{
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struct RuntimeDeviceTrackerInternals
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{
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bool RuntimeValid[VTKM_MAX_DEVICE_ADAPTER_ID];
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};
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}
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VTKM_CONT
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RuntimeDeviceTracker::RuntimeDeviceTracker()
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: Internals(new detail::RuntimeDeviceTrackerInternals)
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{
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this->Reset();
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}
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VTKM_CONT
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RuntimeDeviceTracker::~RuntimeDeviceTracker()
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{
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}
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VTKM_CONT
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void RuntimeDeviceTracker::CheckDevice(vtkm::cont::DeviceAdapterId deviceId,
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const vtkm::cont::DeviceAdapterNameType& deviceName) const
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{
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if (!deviceId.IsValueValid())
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{
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std::stringstream message;
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message << "Device '" << deviceName << "' has invalid ID of " << (int)deviceId.GetValue();
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throw vtkm::cont::ErrorBadValue(message.str());
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}
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}
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VTKM_CONT
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bool RuntimeDeviceTracker::CanRunOnImpl(vtkm::cont::DeviceAdapterId deviceId,
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const vtkm::cont::DeviceAdapterNameType& deviceName) const
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{
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this->CheckDevice(deviceId, deviceName);
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return this->Internals->RuntimeValid[deviceId.GetValue()];
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}
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VTKM_CONT
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void RuntimeDeviceTracker::SetDeviceState(vtkm::cont::DeviceAdapterId deviceId,
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const vtkm::cont::DeviceAdapterNameType& deviceName,
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bool state)
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{
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this->CheckDevice(deviceId, deviceName);
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this->Internals->RuntimeValid[deviceId.GetValue()] = state;
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}
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namespace
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{
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struct VTKM_NEVER_EXPORT RuntimeDeviceTrackerResetFunctor
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{
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vtkm::cont::RuntimeDeviceTracker Tracker;
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VTKM_CONT
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RuntimeDeviceTrackerResetFunctor(const vtkm::cont::RuntimeDeviceTracker& tracker)
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: Tracker(tracker)
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{
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}
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template <typename Device>
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VTKM_CONT void operator()(Device device)
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{
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this->Tracker.ResetDevice(device);
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}
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};
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}
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VTKM_CONT
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void RuntimeDeviceTracker::Reset()
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{
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std::fill_n(this->Internals->RuntimeValid, VTKM_MAX_DEVICE_ADAPTER_ID, false);
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RuntimeDeviceTrackerResetFunctor functor(*this);
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vtkm::ListForEach(functor, VTKM_DEFAULT_DEVICE_ADAPTER_LIST_TAG());
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}
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VTKM_CONT
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vtkm::cont::RuntimeDeviceTracker RuntimeDeviceTracker::DeepCopy() const
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{
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vtkm::cont::RuntimeDeviceTracker dest;
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dest.DeepCopy(*this);
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return dest;
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}
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VTKM_CONT
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void RuntimeDeviceTracker::DeepCopy(const vtkm::cont::RuntimeDeviceTracker& src)
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{
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std::copy_n(
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src.Internals->RuntimeValid, VTKM_MAX_DEVICE_ADAPTER_ID, this->Internals->RuntimeValid);
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}
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VTKM_CONT
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void RuntimeDeviceTracker::ForceDeviceImpl(vtkm::cont::DeviceAdapterId deviceId,
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const vtkm::cont::DeviceAdapterNameType& deviceName,
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bool runtimeExists)
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{
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if (!runtimeExists)
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{
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std::stringstream message;
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message << "Cannot force to device '" << deviceName
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<< "' because that device is not available on this system";
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throw vtkm::cont::ErrorBadValue(message.str());
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}
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this->CheckDevice(deviceId, deviceName);
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std::fill_n(this->Internals->RuntimeValid, VTKM_MAX_DEVICE_ADAPTER_ID, false);
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this->Internals->RuntimeValid[deviceId.GetValue()] = runtimeExists;
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}
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VTKM_CONT
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vtkm::cont::RuntimeDeviceTracker GetGlobalRuntimeDeviceTracker()
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{
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#if defined(VTKM_CLANG) && (__apple_build_version__ < 8000000)
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static std::mutex mtx;
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static std::map<std::thread::id, vtkm::cont::RuntimeDeviceTracker> globalTrackers;
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std::thread::id this_id = std::this_thread::get_id();
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std::unique_lock<std::mutex> lock(mtx);
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auto iter = globalTrackers.find(this_id);
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if (iter != globalTrackers.end())
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{
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return iter->second;
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}
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else
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{
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vtkm::cont::RuntimeDeviceTracker tracker;
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globalTrackers[this_id] = tracker;
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return tracker;
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}
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#else
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return runtimeDeviceTracker;
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#endif
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}
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}
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} // namespace vtkm::cont
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