mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 18:45:43 +00:00
c3a3184d51
Sandia National Laboratories recently changed management from the Sandia Corporation to the National Technology & Engineering Solutions of Sandia, LLC (NTESS). The copyright statements need to be updated accordingly.
130 lines
4.1 KiB
C++
130 lines
4.1 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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// 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 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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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-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/ArrayHandleCast.h>
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#include <vtkm/cont/DataSet.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/io/reader/VTKDataSetReader.h>
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#include <vtkm/io/writer/VTKDataSetWriter.h>
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#include <vtkm/worklet/CosmoTools.h>
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#include <algorithm>
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#include <fstream>
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#include <iostream>
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#include <stdexcept>
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#include <string>
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using DeviceAdapter = VTKM_DEFAULT_DEVICE_ADAPTER_TAG;
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void TestCosmoHaloFinder(const char* fileName)
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{
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std::cout << std::endl
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<< "Testing Cosmology Halo Finder and MBP Center Finder " << fileName << std::endl;
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// Open the file for reading
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std::ifstream inFile(fileName);
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if (inFile.fail())
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{
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std::cout << "File does not exist " << fileName << std::endl;
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return;
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}
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// Read in number of particles and locations
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int nParticles;
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inFile >> nParticles;
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float* xLocation = new float[nParticles];
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float* yLocation = new float[nParticles];
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float* zLocation = new float[nParticles];
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std::cout << "Running Halo Finder on " << nParticles << std::endl;
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for (vtkm::Id p = 0; p < nParticles; p++)
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{
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inFile >> xLocation[p] >> yLocation[p] >> zLocation[p];
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}
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vtkm::cont::ArrayHandle<vtkm::Float32> xLocArray =
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vtkm::cont::make_ArrayHandle<vtkm::Float32>(xLocation, nParticles);
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vtkm::cont::ArrayHandle<vtkm::Float32> yLocArray =
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vtkm::cont::make_ArrayHandle<vtkm::Float32>(yLocation, nParticles);
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vtkm::cont::ArrayHandle<vtkm::Float32> zLocArray =
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vtkm::cont::make_ArrayHandle<vtkm::Float32>(zLocation, nParticles);
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// Output halo id, mbp id and min potential per particle
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vtkm::cont::ArrayHandle<vtkm::Id> resultHaloId;
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vtkm::cont::ArrayHandle<vtkm::Id> resultMBP;
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vtkm::cont::ArrayHandle<vtkm::Float32> resultPot;
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vtkm::cont::Timer<DeviceAdapter> total;
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vtkm::cont::Timer<DeviceAdapter> timer;
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// Create the worklet and run it
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vtkm::Id minHaloSize = 20;
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vtkm::Float32 linkingLength = 0.2f;
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vtkm::Float32 particleMass = 1.08413e+09f;
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vtkm::worklet::CosmoTools cosmoTools;
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cosmoTools.RunHaloFinder(xLocArray,
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yLocArray,
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zLocArray,
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nParticles,
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particleMass,
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minHaloSize,
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linkingLength,
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resultHaloId,
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resultMBP,
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resultPot,
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DeviceAdapter());
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vtkm::Float64 haloTime = timer.GetElapsedTime();
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std::cout << "**** Time for HaloFinder: " << haloTime << std::endl;
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xLocArray.ReleaseResources();
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yLocArray.ReleaseResources();
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zLocArray.ReleaseResources();
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delete[] xLocation;
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delete[] yLocation;
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delete[] zLocation;
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}
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/////////////////////////////////////////////////////////////////////
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//
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// Form of the input file in ASCII
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// Line 1: number of particles in the file
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// Line 2+: (float) xLoc (float) yLoc (float) zLoc
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//
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// CosmoHaloFinder data.cosmotools
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//
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/////////////////////////////////////////////////////////////////////
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int main(int argc, char* argv[])
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{
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if (argc < 2)
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{
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std::cout << "Usage: " << std::endl << "$ " << argv[0] << " <input_file>" << std::endl;
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return 1;
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}
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TestCosmoHaloFinder(argv[1]);
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return 0;
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}
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