mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-16 17:22:55 +00:00
415252c662
The timer class now is asynchronous and device independent. it's using an similiar API as vtkOpenGLRenderTimer with Start(), Stop(), Reset(), Ready(), and GetElapsedTime() function. For convenience and backward compability, Each Start() function call will call Reset() internally and each GetElapsedTime() function call will call Stop() function if it hasn't been called yet for keeping backward compatibility purpose. Bascially it can be used in two modes: * Create a Timer without any device info. vtkm::cont::Timer time; * It would enable timers for all enabled devices on the machine. Users can get a specific elapsed time by passing a device id into the GetElapsedtime function. If no device is provided, it would pick the maximum of all timer results - the logic behind this decision is that if cuda is disabled, openmp, serial and tbb roughly give the same results; if cuda is enabled it's safe to return the maximum elapsed time since users are more interested in the device execution time rather than the kernal launch time. The Ready function can be handy here to query the status of the timer. * Create a Timer with a device id. vtkm::cont::Timer time((vtkm::cont::DeviceAdapterTagCuda())); * It works as the old timer that times for a specific device id.
145 lines
4.5 KiB
C++
145 lines
4.5 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 2017 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2017 UT-Battelle, LLC.
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// Copyright 2017 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 "Benchmarker.h"
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#include <vtkm/TypeTraits.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/DeviceAdapterAlgorithm.h>
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#include <vtkm/cont/Timer.h>
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#include <vtkm/cont/testing/MakeTestDataSet.h>
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#include <vtkm/rendering/Camera.h>
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#include <vtkm/rendering/raytracing/Ray.h>
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#include <vtkm/rendering/raytracing/RayTracer.h>
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#include <vtkm/rendering/raytracing/SphereIntersector.h>
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#include <vtkm/rendering/raytracing/TriangleExtractor.h>
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#include <vtkm/exec/FunctorBase.h>
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#include <vtkm/cont/ColorTable.hxx>
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#include <sstream>
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#include <string>
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#include <vector>
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using namespace vtkm::benchmarking;
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namespace vtkm
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{
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namespace benchmarking
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{
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template <typename Precision>
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struct BenchRayTracing
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{
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vtkm::rendering::raytracing::RayTracer Tracer;
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vtkm::rendering::raytracing::Camera RayCamera;
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vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Id, 4>> Indices;
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vtkm::rendering::raytracing::Ray<Precision> Rays;
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vtkm::Id NumberOfTriangles;
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vtkm::cont::CoordinateSystem Coords;
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vtkm::cont::DataSet Data;
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VTKM_CONT BenchRayTracing()
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{
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vtkm::cont::testing::MakeTestDataSet maker;
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Data = maker.Make3DUniformDataSet2();
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Coords = Data.GetCoordinateSystem();
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vtkm::rendering::Camera camera;
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vtkm::Bounds bounds = Data.GetCoordinateSystem().GetBounds();
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camera.ResetToBounds(bounds);
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vtkm::cont::DynamicCellSet cellset = Data.GetCellSet();
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vtkm::rendering::raytracing::TriangleExtractor triExtractor;
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triExtractor.ExtractCells(cellset);
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vtkm::rendering::raytracing::TriangleIntersector* triIntersector =
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new vtkm::rendering::raytracing::TriangleIntersector();
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triIntersector->SetData(Coords, triExtractor.GetTriangles());
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Tracer.AddShapeIntersector(triIntersector);
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vtkm::rendering::CanvasRayTracer canvas(1920, 1080);
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RayCamera.SetParameters(camera, canvas);
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RayCamera.CreateRays(Rays, Coords.GetBounds());
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Rays.Buffers.at(0).InitConst(0.f);
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vtkm::cont::Field field = Data.GetField("pointvar");
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vtkm::Range range = field.GetRange().GetPortalConstControl().Get(0);
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Tracer.SetField(field, range);
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vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::UInt8, 4>> temp;
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vtkm::cont::ColorTable table("cool to warm");
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table.Sample(100, temp);
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vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Float32, 4>> colors;
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colors.Allocate(100);
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auto portal = colors.GetPortalControl();
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auto colorPortal = temp.GetPortalConstControl();
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constexpr vtkm::Float32 conversionToFloatSpace = (1.0f / 255.0f);
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for (vtkm::Id i = 0; i < 100; ++i)
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{
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auto color = colorPortal.Get(i);
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vtkm::Vec<vtkm::Float32, 4> t(color[0] * conversionToFloatSpace,
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color[1] * conversionToFloatSpace,
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color[2] * conversionToFloatSpace,
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color[3] * conversionToFloatSpace);
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portal.Set(i, t);
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}
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Tracer.SetColorMap(colors);
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Tracer.Render(Rays);
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}
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VTKM_CONT
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vtkm::Float64 operator()()
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{
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vtkm::cont::Timer timer;
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timer.Start();
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RayCamera.CreateRays(Rays, Coords.GetBounds());
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Tracer.Render(Rays);
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return timer.GetElapsedTime();
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}
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VTKM_CONT
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std::string Description() const { return "A ray tracing benchmark"; }
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};
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VTKM_MAKE_BENCHMARK(RayTracing, BenchRayTracing);
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}
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} // end namespace vtkm::benchmarking
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int main(int argc, char* argv[])
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{
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vtkm::cont::InitLogging(argc, argv);
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using Device = VTKM_DEFAULT_DEVICE_ADAPTER_TAG;
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auto tracker = vtkm::cont::GetGlobalRuntimeDeviceTracker();
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tracker.ForceDevice(Device{});
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VTKM_RUN_BENCHMARK(RayTracing, vtkm::ListTagBase<vtkm::Float32>());
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return 0;
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}
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