mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-07-06 07:17:25 +00:00
89 lines
3.0 KiB
C++
89 lines
3.0 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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#include "Benchmarker.h"
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#include <vtkm/Particle.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/cont/DataSetBuilderUniform.h>
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#include <vtkm/cont/Logging.h>
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#include <vtkm/cont/RuntimeDeviceTracker.h>
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#include <vtkm/cont/Timer.h>
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#include <vtkm/cont/internal/OptionParser.h>
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#include <vtkm/filter/flow/ParticleAdvection.h>
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namespace
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{
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// Hold configuration state (e.g. active device):
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vtkm::cont::InitializeResult Config;
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// Wrapper around RK4:
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void BenchParticleAdvection(::benchmark::State& state)
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{
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const vtkm::cont::DeviceAdapterId device = Config.Device;
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const vtkm::Id3 dims(5, 5, 5);
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const vtkm::Vec3f vecX(1, 0, 0);
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vtkm::Id numPoints = dims[0] * dims[1] * dims[2];
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std::vector<vtkm::Vec3f> vectorField(static_cast<std::size_t>(numPoints)); // 3D
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for (std::size_t i = 0; i < static_cast<std::size_t>(numPoints); i++)
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vectorField[i] = vecX;
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vtkm::cont::DataSetBuilderUniform dataSetBuilder;
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vtkm::cont::DataSet ds = dataSetBuilder.Create(dims);
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ds.AddPointField("vector", vectorField);
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vtkm::cont::ArrayHandle<vtkm::Particle> seedArray =
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vtkm::cont::make_ArrayHandle({ vtkm::Particle(vtkm::Vec3f(.2f, 1.0f, .2f), 0),
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vtkm::Particle(vtkm::Vec3f(.2f, 2.0f, .2f), 1),
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vtkm::Particle(vtkm::Vec3f(.2f, 3.0f, .2f), 2) });
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vtkm::filter::flow::ParticleAdvection particleAdvection;
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particleAdvection.SetStepSize(vtkm::FloatDefault(1) / state.range(0));
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particleAdvection.SetNumberOfSteps(static_cast<vtkm::Id>(state.range(0)));
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particleAdvection.SetSeeds(seedArray);
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particleAdvection.SetActiveField("vector");
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vtkm::cont::Timer timer{ device };
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for (auto _ : state)
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{
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(void)_;
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timer.Start();
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auto output = particleAdvection.Execute(ds);
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::benchmark::DoNotOptimize(output);
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timer.Stop();
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state.SetIterationTime(timer.GetElapsedTime());
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}
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state.SetComplexityN(state.range(0));
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}
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VTKM_BENCHMARK_OPTS(BenchParticleAdvection,
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->RangeMultiplier(2)
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->Range(32, 4096)
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->ArgName("Steps")
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->Complexity());
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} // end anon namespace
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int main(int argc, char* argv[])
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{
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auto opts = vtkm::cont::InitializeOptions::DefaultAnyDevice;
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std::vector<char*> args(argv, argv + argc);
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vtkm::bench::detail::InitializeArgs(&argc, args, opts);
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Config = vtkm::cont::Initialize(argc, args.data(), opts);
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if (opts != vtkm::cont::InitializeOptions::None)
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{
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vtkm::cont::GetRuntimeDeviceTracker().ForceDevice(Config.Device);
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}
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VTKM_EXECUTE_BENCHMARKS(argc, args.data());
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}
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