vtk-m/examples/particle_advection/ParticleAdvection.cxx
Kenneth Moreland bddad9b386 Remove TryExecute from filters
Now that the dispatcher does its own TryExecute, filters do not need to
do that. This change requires all worklets called by filters to be able
to execute without knowing the device a priori.
2018-10-16 15:59:53 -06:00

314 lines
9.5 KiB
C++

//============================================================================
// Copyright (c) Kitware, Inc.
// All rights reserved.
// See LICENSE.txt for details.
// This software is distributed WITHOUT ANY WARRANTY; without even
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
// PURPOSE. See the above copyright notice for more information.
//
// Copyright 2014 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
// Copyright 2014 UT-Battelle, LLC.
// Copyright 2014 Los Alamos National Security.
//
// Under the terms of Contract DE-NA0003525 with NTESS,
// the U.S. Government retains certain rights in this software.
//
// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
// Laboratory (LANL), the U.S. Government retains certain rights in
// this software.
//============================================================================
#include <vtkm/cont/DataSet.h>
#include <vtkm/worklet/ParticleAdvection.h>
#include <vtkm/worklet/particleadvection/GridEvaluators.h>
#include <vtkm/worklet/particleadvection/Integrators.h>
#include <vtkm/worklet/particleadvection/ParticleAdvectionWorklets.h>
#include <vtkm/worklet/particleadvection/Particles.h>
#include <vtkm/cont/Timer.h>
#include <vtkm/io/reader/BOVDataSetReader.h>
#include <chrono>
#include <vector>
#ifdef __BUILDING_TBB_VERSION__
#include <tbb/task_scheduler_init.h>
#endif
const vtkm::Id SPARSE = 0;
const vtkm::Id DENSE = 1;
const vtkm::Id MEDIUM = 2;
template <typename T>
static vtkm::Range subRange(vtkm::Range& range, T a, T b)
{
vtkm::Float32 arg1, arg2, len;
arg1 = static_cast<vtkm::Float32>(a);
arg2 = static_cast<vtkm::Float32>(b);
len = static_cast<vtkm::Float32>(range.Length());
return vtkm::Range(range.Min + arg1 * len, range.Min + arg2 * len);
}
template <typename T>
void ignore(T&&)
{
}
void RunTest(const std::string& fname,
vtkm::Id numSeeds,
vtkm::Id numSteps,
vtkm::Float32 stepSize,
vtkm::Id numThreads,
vtkm::Id advectType,
vtkm::Id seeding)
{
using FieldType = vtkm::Float32;
using FieldHandle = vtkm::cont::ArrayHandle<vtkm::Vec<FieldType, 3>>;
vtkm::io::reader::BOVDataSetReader rdr(fname);
vtkm::cont::DataSet ds = rdr.ReadDataSet();
using RGEvalType = vtkm::worklet::particleadvection::UniformGridEvaluate<FieldHandle>;
using RK4RGType = vtkm::worklet::particleadvection::RK4Integrator<RGEvalType>;
vtkm::cont::ArrayHandle<vtkm::Vec<FieldType, 3>> fieldArray;
ds.GetField(0).GetData().CopyTo(fieldArray);
RGEvalType eval(ds.GetCoordinateSystem(), ds.GetCellSet(0), fieldArray);
RK4RGType rk4(eval, stepSize);
std::vector<vtkm::Vec<FieldType, 3>> seeds;
srand(314);
vtkm::Bounds bounds = ds.GetCoordinateSystem().GetBounds();
if (seeding == SPARSE)
bounds = ds.GetCoordinateSystem().GetBounds();
else if (seeding == DENSE)
{
if (fname.find("astro") != std::string::npos)
{
bounds.X = subRange(bounds.X, .1, .15);
bounds.Y = subRange(bounds.Y, .1, .15);
bounds.Z = subRange(bounds.Z, .1, .15);
}
else if (fname.find("fusion") != std::string::npos)
{
bounds.X = subRange(bounds.X, .8, .85);
bounds.Y = subRange(bounds.Y, .55, .60);
bounds.Z = subRange(bounds.Z, .55, .60);
}
else if (fname.find("fishtank") != std::string::npos)
{
bounds.X = subRange(bounds.X, .1, .15);
bounds.Y = subRange(bounds.Y, .1, .15);
bounds.Z = subRange(bounds.Z, .55, .60);
}
}
else if (seeding == MEDIUM)
{
if (fname.find("astro") != std::string::npos)
{
bounds.X = subRange(bounds.X, .4, .6);
bounds.Y = subRange(bounds.Y, .4, .6);
bounds.Z = subRange(bounds.Z, .4, .6);
}
else if (fname.find("fusion") != std::string::npos)
{
bounds.X = subRange(bounds.X, .01, .99);
bounds.Y = subRange(bounds.Y, .01, .99);
bounds.Z = subRange(bounds.Z, .45, .55);
}
else if (fname.find("fishtank") != std::string::npos)
{
bounds.X = subRange(bounds.X, .4, .6);
bounds.Y = subRange(bounds.Y, .4, .6);
bounds.Z = subRange(bounds.Z, .4, .6);
}
}
for (int i = 0; i < numSeeds; i++)
{
vtkm::Vec<FieldType, 3> p;
vtkm::Float32 rx = (vtkm::Float32)rand() / (vtkm::Float32)RAND_MAX;
vtkm::Float32 ry = (vtkm::Float32)rand() / (vtkm::Float32)RAND_MAX;
vtkm::Float32 rz = (vtkm::Float32)rand() / (vtkm::Float32)RAND_MAX;
p[0] = static_cast<FieldType>(bounds.X.Min + rx * bounds.X.Length());
p[1] = static_cast<FieldType>(bounds.Y.Min + ry * bounds.Y.Length());
p[2] = static_cast<FieldType>(bounds.Z.Min + rz * bounds.Z.Length());
seeds.push_back(p);
}
#ifdef __BUILDING_TBB_VERSION__
int nT = tbb::task_scheduler_init::default_num_threads();
if (numThreads != -1)
nT = (int)numThreads;
//make sure the task_scheduler_init object is in scope when running sth w/ TBB
tbb::task_scheduler_init init(nT);
#else
ignore(numThreads);
#endif
//time only the actual run
auto t0 = std::chrono::high_resolution_clock::now();
vtkm::cont::ArrayHandle<vtkm::Vec<FieldType, 3>> seedArray;
seedArray = vtkm::cont::make_ArrayHandle(seeds);
if (advectType == 0)
{
vtkm::worklet::ParticleAdvection particleAdvection;
particleAdvection.Run(rk4, seedArray, numSteps);
}
else
{
vtkm::worklet::Streamline streamline;
streamline.Run(rk4, seedArray, numSteps);
}
auto t1 = std::chrono::high_resolution_clock::now() - t0;
auto runtime = std::chrono::duration_cast<std::chrono::milliseconds>(t1).count();
std::cerr << "Runtime = " << runtime << " ms " << std::endl;
}
bool ParseArgs(int argc,
char** argv,
vtkm::Id& numSeeds,
vtkm::Id& numSteps,
vtkm::Float32& stepSize,
vtkm::Id& advectType,
vtkm::Id& stepsPerRound,
vtkm::Id& particlesPerRound,
vtkm::Id& numThreads,
std::string& dataFile,
std::string& pgmType,
bool& dumpOutput,
vtkm::Id& seeding)
{
numSeeds = 100;
numSteps = 100;
stepSize = 0.1f;
advectType = 0;
stepsPerRound = -1;
particlesPerRound = -1;
numThreads = -1;
dataFile = "";
pgmType = "UNKNOWN";
dumpOutput = false;
seeding = SPARSE;
if (argc < 2)
{
std::cerr << "Usage " << argv[0] << std::endl;
std::cerr << " -seeds #seeds" << std::endl;
std::cerr << " -steps maxSteps" << std::endl;
std::cerr << " -h stepSize" << std::endl;
std::cerr << " -particle : particle push" << std::endl;
std::cerr << " -streamline steps_per_round (-1 = 0 rounds): particle history" << std::endl;
std::cerr << " -t #numThreads" << std::endl;
std::cerr << " -file dataFile" << std::endl;
std::cerr << " -dump : dump output points" << std::endl;
return false;
}
std::string pgm = argv[0];
if (pgm.find("SERIAL") != std::string::npos)
pgmType = "SER";
else if (pgm.find("TBB") != std::string::npos)
pgmType = "TBB";
else if (pgm.find("CUDA") != std::string::npos)
pgmType = "CUD";
for (int i = 1; i < argc; i++)
{
std::string arg = argv[i];
if (arg == "-seeds")
numSeeds = static_cast<vtkm::Id>(atoi(argv[++i]));
else if (arg == "-steps")
numSteps = static_cast<vtkm::Id>(atoi(argv[++i]));
else if (arg == "-h")
stepSize = static_cast<vtkm::Float32>(atof(argv[++i]));
else if (arg == "-particle")
advectType = 0;
else if (arg == "-streamline")
{
advectType = 1;
}
else if (arg == "-streamlineS")
{
advectType = 1;
stepsPerRound = static_cast<vtkm::Id>(atoi(argv[++i]));
}
else if (arg == "-streamlineP")
{
advectType = 1;
particlesPerRound = static_cast<vtkm::Id>(atoi(argv[++i]));
}
else if (arg == "-streamlineSP")
{
advectType = 1;
stepsPerRound = static_cast<vtkm::Id>(atoi(argv[++i]));
particlesPerRound = static_cast<vtkm::Id>(atoi(argv[++i]));
}
else if (arg == "-file")
dataFile = argv[++i];
else if (arg == "-t")
numThreads = static_cast<vtkm::Id>(atoi(argv[++i]));
else if (arg == "-dump")
dumpOutput = true;
else if (arg == "-sparse")
seeding = SPARSE;
else if (arg == "-dense")
seeding = DENSE;
else if (arg == "-medium")
seeding = MEDIUM;
else
std::cerr << "Unexpected argument: " << arg << std::endl;
}
if (dataFile.size() == 0)
{
std::cerr << "Error: no data file specified" << std::endl;
return false;
}
//Congratulations user, we have a valid run:
std::cerr << pgmType << ": " << numSeeds << " " << numSteps << " " << stepSize << " ";
if (advectType == 0)
std::cerr << "PP ";
else
std::cerr << "SL ";
std::cerr << numThreads << " ";
std::cerr << dataFile << std::endl;
return true;
}
int main(int argc, char** argv)
{
vtkm::Id numSeeds = 100, numSteps = 100, advectType = 0, numThreads = -1, stepsPerRound = -1,
particlesPerRound = -1;
vtkm::Float32 stepSize = 0.1f;
std::string dataFile, pgmType;
vtkm::Id seeding = SPARSE;
bool dumpOutput = false;
if (!ParseArgs(argc,
argv,
numSeeds,
numSteps,
stepSize,
advectType,
stepsPerRound,
particlesPerRound,
numThreads,
dataFile,
pgmType,
dumpOutput,
seeding))
{
return -1;
}
RunTest(dataFile, numSeeds, numSteps, stepSize, numThreads, advectType, seeding);
return 0;
}