598 lines
19 KiB
C++
598 lines
19 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 2014 Sandia Corporation.
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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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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#ifndef vtk_m_cont_tbb_internal_FunctorsTBB_h
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#define vtk_m_cont_tbb_internal_FunctorsTBB_h
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#include <vtkm/TypeTraits.h>
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#include <vtkm/Types.h>
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#include <vtkm/cont/ArrayPortalToIterators.h>
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#include <vtkm/cont/Error.h>
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#include <vtkm/cont/internal/FunctorsGeneral.h>
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#include <vtkm/exec/internal/ErrorMessageBuffer.h>
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VTKM_THIRDPARTY_PRE_INCLUDE
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#if defined(VTKM_MSVC)
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// TBB's header include a #pragma comment(lib,"tbb.lib") line to make all
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// consuming libraries link to tbb, this is bad behavior in a header
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// based project
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#pragma push_macro("__TBB_NO_IMPLICITLINKAGE")
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#define __TBB_NO_IMPLICIT_LINKAGE 1
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#endif // defined(VTKM_MSVC)
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// TBB includes windows.h, so instead we want to include windows.h with the
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// correct settings so that we don't clobber any existing function
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#include <vtkm/internal/Windows.h>
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#include <tbb/tbb_stddef.h>
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#if (TBB_VERSION_MAJOR == 4) && (TBB_VERSION_MINOR == 2)
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//we provide an patched implementation of tbb parallel_sort
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//that fixes ADL for std::swap. This patch has been submitted to Intel
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//and is fixed in TBB 4.2 update 2.
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#include <vtkm/cont/tbb/internal/parallel_sort.h>
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#else
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#include <tbb/parallel_sort.h>
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#endif
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#include <numeric>
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#include <tbb/blocked_range.h>
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#include <tbb/blocked_range3d.h>
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#include <tbb/parallel_for.h>
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#include <tbb/parallel_reduce.h>
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#include <tbb/parallel_scan.h>
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#include <tbb/partitioner.h>
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#include <tbb/tick_count.h>
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#if defined(VTKM_MSVC)
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#pragma pop_macro("__TBB_NO_IMPLICITLINKAGE")
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#endif
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VTKM_THIRDPARTY_POST_INCLUDE
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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 tbb
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{
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// The "grain size" of scheduling with TBB. Not a lot of thought has gone
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// into picking this size.
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static const vtkm::Id TBB_GRAIN_SIZE = 1024;
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template <class InputPortalType, class T, class BinaryOperationType>
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struct ReduceBody
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{
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T Sum;
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T InitialValue;
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bool FirstCall;
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InputPortalType InputPortal;
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BinaryOperationType BinaryOperation;
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VTKM_CONT
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ReduceBody(const InputPortalType& inputPortal, T initialValue,
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BinaryOperationType binaryOperation)
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: Sum(vtkm::TypeTraits<T>::ZeroInitialization())
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, InitialValue(initialValue)
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, FirstCall(true)
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, InputPortal(inputPortal)
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, BinaryOperation(binaryOperation)
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{
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}
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VTKM_EXEC_CONT
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ReduceBody(const ReduceBody& body, ::tbb::split)
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: Sum(vtkm::TypeTraits<T>::ZeroInitialization())
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, InitialValue(body.InitialValue)
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, FirstCall(true)
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, InputPortal(body.InputPortal)
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, BinaryOperation(body.BinaryOperation)
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{
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}
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VTKM_SUPPRESS_EXEC_WARNINGS
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VTKM_EXEC
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void operator()(const ::tbb::blocked_range<vtkm::Id>& range)
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{
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typedef vtkm::cont::ArrayPortalToIterators<InputPortalType> InputIteratorsType;
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InputIteratorsType inputIterators(this->InputPortal);
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//use temp, and iterators instead of member variable to reduce false sharing
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typename InputIteratorsType::IteratorType inIter =
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inputIterators.GetBegin() + static_cast<std::ptrdiff_t>(range.begin());
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T temp = this->BinaryOperation(*inIter, *(inIter + 1));
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++inIter;
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++inIter;
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for (vtkm::Id index = range.begin() + 2; index != range.end(); ++index, ++inIter)
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{
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temp = this->BinaryOperation(temp, *inIter);
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}
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//determine if we also have to add the initial value to temp
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if (range.begin() == 0)
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{
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temp = this->BinaryOperation(temp, this->InitialValue);
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}
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//Now we can save temp back to sum, taking into account if
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//this task has been called before, and the sum value needs
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//to also be reduced.
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if (this->FirstCall)
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{
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this->Sum = temp;
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}
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else
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{
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this->Sum = this->BinaryOperation(this->Sum, temp);
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}
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this->FirstCall = false;
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}
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VTKM_SUPPRESS_EXEC_WARNINGS
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VTKM_EXEC_CONT
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void join(const ReduceBody& left)
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{
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// std::cout << "join" << std::endl;
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this->Sum = this->BinaryOperation(left.Sum, this->Sum);
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}
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};
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VTKM_SUPPRESS_EXEC_WARNINGS
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template <class InputPortalType, typename T, class BinaryOperationType>
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VTKM_CONT static T ReducePortals(InputPortalType inputPortal, T initialValue,
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BinaryOperationType binaryOperation)
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{
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typedef internal::WrappedBinaryOperator<T, BinaryOperationType> WrappedBinaryOp;
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WrappedBinaryOp wrappedBinaryOp(binaryOperation);
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ReduceBody<InputPortalType, T, WrappedBinaryOp> body(inputPortal, initialValue, wrappedBinaryOp);
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vtkm::Id arrayLength = inputPortal.GetNumberOfValues();
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if (arrayLength > 1)
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{
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::tbb::blocked_range<vtkm::Id> range(0, arrayLength, TBB_GRAIN_SIZE);
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::tbb::parallel_reduce(range, body);
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return body.Sum;
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}
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else if (arrayLength == 1)
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{
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//ReduceBody does not work with an array of size 1.
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return binaryOperation(initialValue, inputPortal.Get(0));
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}
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else // arrayLength == 0
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{
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// ReduceBody does not work with an array of size 0.
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return initialValue;
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}
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}
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template <class InputPortalType, class OutputPortalType, class BinaryOperationType>
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struct ScanInclusiveBody
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{
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using ValueType = typename std::remove_reference<typename OutputPortalType::ValueType>::type;
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ValueType Sum;
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bool FirstCall;
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InputPortalType InputPortal;
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OutputPortalType OutputPortal;
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BinaryOperationType BinaryOperation;
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VTKM_CONT
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ScanInclusiveBody(const InputPortalType& inputPortal, const OutputPortalType& outputPortal,
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BinaryOperationType binaryOperation)
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: Sum(vtkm::TypeTraits<ValueType>::ZeroInitialization())
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, FirstCall(true)
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, InputPortal(inputPortal)
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, OutputPortal(outputPortal)
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, BinaryOperation(binaryOperation)
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{
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}
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VTKM_EXEC_CONT
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ScanInclusiveBody(const ScanInclusiveBody& body, ::tbb::split)
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: Sum(vtkm::TypeTraits<ValueType>::ZeroInitialization())
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, FirstCall(true)
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, InputPortal(body.InputPortal)
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, OutputPortal(body.OutputPortal)
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, BinaryOperation(body.BinaryOperation)
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{
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}
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VTKM_SUPPRESS_EXEC_WARNINGS
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VTKM_EXEC
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void operator()(const ::tbb::blocked_range<vtkm::Id>& range, ::tbb::pre_scan_tag)
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{
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typedef vtkm::cont::ArrayPortalToIterators<InputPortalType> InputIteratorsType;
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InputIteratorsType inputIterators(this->InputPortal);
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//use temp, and iterators instead of member variable to reduce false sharing
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typename InputIteratorsType::IteratorType inIter =
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inputIterators.GetBegin() + static_cast<std::ptrdiff_t>(range.begin());
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ValueType temp = this->FirstCall ? *inIter++ : this->BinaryOperation(this->Sum, *inIter++);
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this->FirstCall = false;
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for (vtkm::Id index = range.begin() + 1; index != range.end(); ++index, ++inIter)
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{
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temp = this->BinaryOperation(temp, *inIter);
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}
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this->Sum = temp;
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}
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VTKM_SUPPRESS_EXEC_WARNINGS
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VTKM_EXEC
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void operator()(const ::tbb::blocked_range<vtkm::Id>& range, ::tbb::final_scan_tag)
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{
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typedef vtkm::cont::ArrayPortalToIterators<InputPortalType> InputIteratorsType;
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typedef vtkm::cont::ArrayPortalToIterators<OutputPortalType> OutputIteratorsType;
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InputIteratorsType inputIterators(this->InputPortal);
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OutputIteratorsType outputIterators(this->OutputPortal);
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//use temp, and iterators instead of member variable to reduce false sharing
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typename InputIteratorsType::IteratorType inIter =
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inputIterators.GetBegin() + static_cast<std::ptrdiff_t>(range.begin());
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typename OutputIteratorsType::IteratorType outIter =
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outputIterators.GetBegin() + static_cast<std::ptrdiff_t>(range.begin());
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ValueType temp = this->FirstCall ? *inIter++ : this->BinaryOperation(this->Sum, *inIter++);
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this->FirstCall = false;
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*outIter++ = temp;
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for (vtkm::Id index = range.begin() + 1; index != range.end(); ++index, ++inIter, ++outIter)
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{
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*outIter = temp = this->BinaryOperation(temp, *inIter);
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}
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this->Sum = temp;
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}
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VTKM_SUPPRESS_EXEC_WARNINGS
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VTKM_EXEC_CONT
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void reverse_join(const ScanInclusiveBody& left)
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{
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this->Sum = this->BinaryOperation(left.Sum, this->Sum);
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}
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VTKM_SUPPRESS_EXEC_WARNINGS
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VTKM_EXEC_CONT
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void assign(const ScanInclusiveBody& src) { this->Sum = src.Sum; }
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};
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template <class InputPortalType, class OutputPortalType, class BinaryOperationType>
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struct ScanExclusiveBody
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{
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using ValueType = typename std::remove_reference<typename OutputPortalType::ValueType>::type;
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ValueType Sum;
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bool FirstCall;
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InputPortalType InputPortal;
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OutputPortalType OutputPortal;
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BinaryOperationType BinaryOperation;
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VTKM_CONT
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ScanExclusiveBody(const InputPortalType& inputPortal, const OutputPortalType& outputPortal,
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BinaryOperationType binaryOperation, const ValueType& initialValue)
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: Sum(initialValue)
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, FirstCall(true)
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, InputPortal(inputPortal)
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, OutputPortal(outputPortal)
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, BinaryOperation(binaryOperation)
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{
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}
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VTKM_EXEC_CONT
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ScanExclusiveBody(const ScanExclusiveBody& body, ::tbb::split)
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: Sum(body.Sum)
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, FirstCall(true)
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, InputPortal(body.InputPortal)
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, OutputPortal(body.OutputPortal)
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, BinaryOperation(body.BinaryOperation)
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{
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}
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VTKM_SUPPRESS_EXEC_WARNINGS
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VTKM_EXEC
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void operator()(const ::tbb::blocked_range<vtkm::Id>& range, ::tbb::pre_scan_tag)
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{
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typedef vtkm::cont::ArrayPortalToIterators<InputPortalType> InputIteratorsType;
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InputIteratorsType inputIterators(this->InputPortal);
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//move the iterator to the first item
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typename InputIteratorsType::IteratorType iter =
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inputIterators.GetBegin() + static_cast<std::ptrdiff_t>(range.begin());
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ValueType temp = *iter;
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++iter;
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if (!(this->FirstCall && range.begin() > 0))
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{
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temp = this->BinaryOperation(this->Sum, temp);
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}
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for (vtkm::Id index = range.begin() + 1; index != range.end(); ++index, ++iter)
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{
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temp = this->BinaryOperation(temp, *iter);
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}
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this->Sum = temp;
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this->FirstCall = false;
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}
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VTKM_SUPPRESS_EXEC_WARNINGS
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VTKM_EXEC
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void operator()(const ::tbb::blocked_range<vtkm::Id>& range, ::tbb::final_scan_tag)
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{
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typedef vtkm::cont::ArrayPortalToIterators<InputPortalType> InputIteratorsType;
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typedef vtkm::cont::ArrayPortalToIterators<OutputPortalType> OutputIteratorsType;
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InputIteratorsType inputIterators(this->InputPortal);
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OutputIteratorsType outputIterators(this->OutputPortal);
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//move the iterators to the first item
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typename InputIteratorsType::IteratorType inIter =
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inputIterators.GetBegin() + static_cast<std::ptrdiff_t>(range.begin());
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typename OutputIteratorsType::IteratorType outIter =
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outputIterators.GetBegin() + static_cast<std::ptrdiff_t>(range.begin());
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ValueType temp = this->Sum;
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for (vtkm::Id index = range.begin(); index != range.end(); ++index, ++inIter, ++outIter)
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{
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//copy into a local reference since Input and Output portal
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//could point to the same memory location
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ValueType v = *inIter;
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*outIter = temp;
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temp = this->BinaryOperation(temp, v);
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}
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this->Sum = temp;
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this->FirstCall = false;
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}
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VTKM_SUPPRESS_EXEC_WARNINGS
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VTKM_EXEC_CONT
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void reverse_join(const ScanExclusiveBody& left)
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{
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//The contract we have with TBB is that they will only join
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//two objects that have been scanned, or two objects which
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//haven't been scanned
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VTKM_ASSERT(left.FirstCall == this->FirstCall);
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if (!left.FirstCall && !this->FirstCall)
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{
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this->Sum = this->BinaryOperation(left.Sum, this->Sum);
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}
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}
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VTKM_SUPPRESS_EXEC_WARNINGS
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VTKM_EXEC_CONT
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void assign(const ScanExclusiveBody& src) { this->Sum = src.Sum; }
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};
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VTKM_SUPPRESS_EXEC_WARNINGS
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template <class InputPortalType, class OutputPortalType, class BinaryOperationType>
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VTKM_CONT static typename std::remove_reference<typename OutputPortalType::ValueType>::type
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ScanInclusivePortals(InputPortalType inputPortal, OutputPortalType outputPortal,
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BinaryOperationType binaryOperation)
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{
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using ValueType = typename std::remove_reference<typename OutputPortalType::ValueType>::type;
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typedef internal::WrappedBinaryOperator<ValueType, BinaryOperationType> WrappedBinaryOp;
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WrappedBinaryOp wrappedBinaryOp(binaryOperation);
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ScanInclusiveBody<InputPortalType, OutputPortalType, WrappedBinaryOp> body(
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inputPortal, outputPortal, wrappedBinaryOp);
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vtkm::Id arrayLength = inputPortal.GetNumberOfValues();
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::tbb::blocked_range<vtkm::Id> range(0, arrayLength, TBB_GRAIN_SIZE);
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::tbb::parallel_scan(range, body);
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return body.Sum;
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}
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VTKM_SUPPRESS_EXEC_WARNINGS
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template <class InputPortalType, class OutputPortalType, class BinaryOperationType>
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VTKM_CONT static typename std::remove_reference<typename OutputPortalType::ValueType>::type
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ScanExclusivePortals(
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InputPortalType inputPortal, OutputPortalType outputPortal, BinaryOperationType binaryOperation,
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typename std::remove_reference<typename OutputPortalType::ValueType>::type initialValue)
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{
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using ValueType = typename std::remove_reference<typename OutputPortalType::ValueType>::type;
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typedef internal::WrappedBinaryOperator<ValueType, BinaryOperationType> WrappedBinaryOp;
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WrappedBinaryOp wrappedBinaryOp(binaryOperation);
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ScanExclusiveBody<InputPortalType, OutputPortalType, WrappedBinaryOp> body(
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inputPortal, outputPortal, wrappedBinaryOp, initialValue);
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vtkm::Id arrayLength = inputPortal.GetNumberOfValues();
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::tbb::blocked_range<vtkm::Id> range(0, arrayLength, TBB_GRAIN_SIZE);
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::tbb::parallel_scan(range, body);
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// Seems a little weird to me that we would return the last value in the
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// array rather than the sum, but that is how the function is specified.
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return body.Sum;
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}
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template <class FunctorType>
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class ScheduleKernel
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{
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public:
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VTKM_CONT ScheduleKernel(const FunctorType& functor)
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: Functor(functor)
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{
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}
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VTKM_CONT void SetErrorMessageBuffer(const vtkm::exec::internal::ErrorMessageBuffer& errorMessage)
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{
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this->ErrorMessage = errorMessage;
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this->Functor.SetErrorMessageBuffer(errorMessage);
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}
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VTKM_CONT
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void operator()(const ::tbb::blocked_range<vtkm::Id>& range) const
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{
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// The TBB device adapter causes array classes to be shared between
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// control and execution environment. This means that it is possible for
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// an exception to be thrown even though this is typically not allowed.
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// Throwing an exception from here is bad because there are several
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// simultaneous threads running. Get around the problem by catching the
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// error and setting the message buffer as expected.
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try
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{
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const vtkm::Id start = range.begin();
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const vtkm::Id end = range.end();
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VTKM_VECTORIZATION_PRE_LOOP
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for (vtkm::Id index = start; index != end; index++)
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{
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VTKM_VECTORIZATION_IN_LOOP
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this->Functor(index);
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}
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}
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catch (vtkm::cont::Error& error)
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{
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this->ErrorMessage.RaiseError(error.GetMessage().c_str());
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}
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catch (...)
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{
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this->ErrorMessage.RaiseError("Unexpected error in execution environment.");
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}
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}
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private:
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FunctorType Functor;
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vtkm::exec::internal::ErrorMessageBuffer ErrorMessage;
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};
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template <class FunctorType>
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class ScheduleKernelId3
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{
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public:
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VTKM_CONT ScheduleKernelId3(const FunctorType& functor)
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: Functor(functor)
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{
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}
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VTKM_CONT void SetErrorMessageBuffer(const vtkm::exec::internal::ErrorMessageBuffer& errorMessage)
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{
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this->ErrorMessage = errorMessage;
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this->Functor.SetErrorMessageBuffer(errorMessage);
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}
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VTKM_CONT
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void operator()(const ::tbb::blocked_range3d<vtkm::Id>& range) const
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{
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try
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{
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const vtkm::Id kstart = range.pages().begin();
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const vtkm::Id kend = range.pages().end();
|
|
const vtkm::Id jstart = range.rows().begin();
|
|
const vtkm::Id jend = range.rows().end();
|
|
const vtkm::Id istart = range.cols().begin();
|
|
const vtkm::Id iend = range.cols().end();
|
|
|
|
vtkm::Id3 index;
|
|
for (vtkm::Id k = kstart; k != kend; ++k)
|
|
{
|
|
index[2] = k;
|
|
for (vtkm::Id j = jstart; j != jend; ++j)
|
|
{
|
|
index[1] = j;
|
|
for (vtkm::Id i = istart; i != iend; ++i)
|
|
{
|
|
index[0] = i;
|
|
this->Functor(index);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
catch (vtkm::cont::Error& error)
|
|
{
|
|
this->ErrorMessage.RaiseError(error.GetMessage().c_str());
|
|
}
|
|
catch (...)
|
|
{
|
|
this->ErrorMessage.RaiseError("Unexpected error in execution environment.");
|
|
}
|
|
}
|
|
|
|
private:
|
|
FunctorType Functor;
|
|
vtkm::exec::internal::ErrorMessageBuffer ErrorMessage;
|
|
};
|
|
|
|
template <typename InputPortalType, typename IndexPortalType, typename OutputPortalType>
|
|
class ScatterKernel
|
|
{
|
|
public:
|
|
VTKM_CONT ScatterKernel(InputPortalType inputPortal, IndexPortalType indexPortal,
|
|
OutputPortalType outputPortal)
|
|
: ValuesPortal(inputPortal)
|
|
, IndexPortal(indexPortal)
|
|
, OutputPortal(outputPortal)
|
|
{
|
|
}
|
|
|
|
VTKM_CONT
|
|
void operator()(const ::tbb::blocked_range<vtkm::Id>& range) const
|
|
{
|
|
// The TBB device adapter causes array classes to be shared between
|
|
// control and execution environment. This means that it is possible for
|
|
// an exception to be thrown even though this is typically not allowed.
|
|
// Throwing an exception from here is bad because there are several
|
|
// simultaneous threads running. Get around the problem by catching the
|
|
// error and setting the message buffer as expected.
|
|
try
|
|
{
|
|
VTKM_VECTORIZATION_PRE_LOOP
|
|
for (vtkm::Id i = range.begin(); i < range.end(); i++)
|
|
{
|
|
VTKM_VECTORIZATION_IN_LOOP
|
|
OutputPortal.Set(i, ValuesPortal.Get(IndexPortal.Get(i)));
|
|
}
|
|
}
|
|
catch (vtkm::cont::Error& error)
|
|
{
|
|
this->ErrorMessage.RaiseError(error.GetMessage().c_str());
|
|
}
|
|
catch (...)
|
|
{
|
|
this->ErrorMessage.RaiseError("Unexpected error in execution environment.");
|
|
}
|
|
}
|
|
|
|
private:
|
|
InputPortalType ValuesPortal;
|
|
IndexPortalType IndexPortal;
|
|
OutputPortalType OutputPortal;
|
|
vtkm::exec::internal::ErrorMessageBuffer ErrorMessage;
|
|
};
|
|
|
|
VTKM_SUPPRESS_EXEC_WARNINGS
|
|
template <typename InputPortalType, typename IndexPortalType, typename OutputPortalType>
|
|
VTKM_CONT static void ScatterPortal(InputPortalType inputPortal, IndexPortalType indexPortal,
|
|
OutputPortalType outputPortal)
|
|
{
|
|
const vtkm::Id size = inputPortal.GetNumberOfValues();
|
|
VTKM_ASSERT(size == indexPortal.GetNumberOfValues());
|
|
|
|
ScatterKernel<InputPortalType, IndexPortalType, OutputPortalType> scatter(
|
|
inputPortal, indexPortal, outputPortal);
|
|
|
|
::tbb::blocked_range<vtkm::Id> range(0, size, TBB_GRAIN_SIZE);
|
|
::tbb::parallel_for(range, scatter);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif //vtk_m_cont_tbb_internal_FunctorsTBB_h
|