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https://gitlab.kitware.com/vtk/vtk-m
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4f9fa08fa1
The `ArrayHandleStreaming` class stems from an old research project experimenting with bringing data from an `ArrayHandle` in parts and overlapping device transfer and execution. It works, but only in very limited contexts. Thus, it is not actually used today. Plus, the feature requires global indexing to be permutated throughout the worklet dispatching classes of VTK-m for no further reason. Because it is not really used, there are other more promising approaches on the horizon, and it makes further scheduling improvements difficult, we are removing this functionality.
64 lines
2.1 KiB
C++
64 lines
2.1 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_exec_arg_ThreadIndicesBasic3D_h
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#define vtk_m_exec_arg_ThreadIndicesBasic3D_h
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#include <vtkm/exec/arg/ThreadIndicesBasic.h>
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namespace vtkm
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{
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namespace exec
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{
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namespace arg
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{
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/// \brief Container for 3D thread indices in a worklet invocation
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///
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/// During the execution of a worklet function in an execution environment
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/// thread, VTK-m has to manage several indices. To simplify this management
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/// and to provide a single place to store them (so that they do not have to be
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/// recomputed), \c WorkletInvokeFunctor creates a \c ThreadIndices object.
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/// This object gets passed to \c Fetch operations to help them load data.
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///
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///
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class ThreadIndicesBasic3D : public vtkm::exec::arg::ThreadIndicesBasic
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{
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public:
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VTKM_EXEC
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ThreadIndicesBasic3D(const vtkm::Id3& threadIndex3D,
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vtkm::Id threadIndex1D,
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vtkm::Id inIndex,
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vtkm::IdComponent visitIndex,
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vtkm::Id outIndex)
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: ThreadIndicesBasic(threadIndex1D, inIndex, visitIndex, outIndex)
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, ThreadIndex3D(threadIndex3D)
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{
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}
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/// \brief The 3D index into the input domain.
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///
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/// This index refers to the input element (array value, cell, etc.) that
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/// this thread is being invoked for. If the input domain has 2 or 3
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/// dimensional indexing, this result will preserve that. If the domain
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/// indexing is just one dimensional, the result will have the index in the
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/// first component with the remaining components set to 0.
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///
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VTKM_EXEC
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vtkm::Id3 GetInputIndex3D() const { return this->ThreadIndex3D; }
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private:
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vtkm::Id3 ThreadIndex3D;
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};
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}
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}
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} // namespace vtkm::exec::arg
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#endif //vtk_m_exec_arg_ThreadIndicesBasic3D_h
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