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281 lines
8.0 KiB
C++
281 lines
8.0 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./tests/Test_hmc_EODWFRatio.cc
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Copyright (C) 2015-2016
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Author: Peter Boyle <pabobyle@ph.ed.ac.uk>
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Author: Guido Cossu <guido.cossu@ed.ac.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution
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directory
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*************************************************************************************/
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/* END LEGAL */
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#include <Grid/Grid.h>
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namespace Grid{
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struct FermionParameters: Serializable {
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GRID_SERIALIZABLE_CLASS_MEMBERS(FermionParameters,
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int, Ls,
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double, mass,
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double, M5,
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double, b,
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double, c,
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double, StoppingCondition,
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int, MaxCGIterations,
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bool, ApplySmearing);
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};
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struct MobiusHMCParameters: Serializable {
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GRID_SERIALIZABLE_CLASS_MEMBERS(MobiusHMCParameters,
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double, gauge_beta,
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FermionParameters, Mobius)
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template <class ReaderClass >
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MobiusHMCParameters(Reader<ReaderClass>& Reader){
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read(Reader, "Action", *this);
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}
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};
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struct SmearingParameters: Serializable {
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GRID_SERIALIZABLE_CLASS_MEMBERS(SmearingParameters,
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double, rho,
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Integer, Nsmear)
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template <class ReaderClass >
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SmearingParameters(Reader<ReaderClass>& Reader){
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read(Reader, "StoutSmearing", *this);
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}
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};
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}
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int main(int argc, char **argv) {
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using namespace Grid;
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;
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Grid_init(&argc, &argv);
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int threads = GridThread::GetThreads();
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// here make a routine to print all the relevant information on the run
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std::cout << GridLogMessage << "Grid is setup to use " << threads << " threads" << std::endl;
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// Typedefs to simplify notation
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typedef GenericHMCRunner<MinimumNorm2> HMCWrapper; // Uses the default minimum norm
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typedef WilsonImplR FermionImplPolicy;
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typedef MobiusFermionD FermionAction;
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typedef typename FermionAction::FermionField FermionField;
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// Serialiser
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typedef Grid::XmlReader Serialiser;
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//typedef Grid::JSONReader Serialiser;
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//::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
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HMCWrapper TheHMC;
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TheHMC.ReadCommandLine(argc, argv); // these can be parameters from file
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// Reader, file should come from command line
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if (TheHMC.ParameterFile.empty()){
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std::cout << "Input file not specified."
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<< "Use --ParameterFile option in the command line.\nAborting"
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<< std::endl;
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exit(1);
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}
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Serialiser Reader(TheHMC.ParameterFile);
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MobiusHMCParameters MyParams(Reader);
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// Apply smearing to the fermionic action
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bool ApplySmearing = MyParams.Mobius.ApplySmearing;
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// Use this if you want to tweak the default decomposition
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// commented out as very architecture speficic
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//std::vector<int> simd_lanes({2,2,1,1});
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// Grid from the command line arguments --grid and --mpi
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// drop the simd_lanes argument to fall back to the default decomposition for the SIMD lanes
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//TheHMC.Resources.AddFourDimGrid("gauge", simd_lanes); // tweak the SIMD lanes
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TheHMC.Resources.AddFourDimGrid("gauge"); // use default simd lanes decomposition
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// Possibile to create the module by hand
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// hardcoding parameters or using a Reader
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// Checkpointer definition (Name: Checkpointer)
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CheckpointerParameters CPparams(Reader);
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// Commenting out since we are using the reader
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/*
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CPparams.config_prefix = "ckpoint_EODWF_lat";
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CPparams.rng_prefix = "ckpoint_EODWF_rng";
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CPparams.saveInterval = 5;
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CPparams.format = "IEEE64BIG";
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*/
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TheHMC.Resources.LoadNerscCheckpointer(CPparams);
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// RNG definition (Name: RandomNumberGenerator)
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RNGModuleParameters RNGpar(Reader);
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// Commenting out since we are using the reader
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/*
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RNGpar.serial_seeds = "1 2 3 4 5";
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RNGpar.parallel_seeds = "6 7 8 9 10";
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*/
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TheHMC.Resources.SetRNGSeeds(RNGpar);
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// Construct observables
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// here there is too much indirection
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typedef PlaquetteMod<HMCWrapper::ImplPolicy> PlaqObs;
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TheHMC.Resources.AddObservable<PlaqObs>();
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//////////////////////////////////////////////
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/////////////////////////////////////////////////////////////
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// Collect actions, here use more encapsulation
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// need wrappers of the fermionic classes
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// that have a complex construction
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// standard
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//RealD beta = 5.6 ;
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WilsonGaugeActionR Waction(MyParams.gauge_beta);
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//const int Ls = 8;
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const int Ls = MyParams.Mobius.Ls;
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auto GridPtr = TheHMC.Resources.GetCartesian();
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auto GridRBPtr = TheHMC.Resources.GetRBCartesian();
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auto FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls,GridPtr);
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auto FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,GridPtr);
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// temporarily need a gauge field
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LatticeGaugeField U(GridPtr);
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Real mass = MyParams.Mobius.mass; //0.04;
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Real pv = 1.0;
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RealD M5 = MyParams.Mobius.M5; //1.5;
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// Note: IroIro and Grid notation for b and c differ
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RealD b = MyParams.Mobius.b; // 3./2.;
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RealD c = MyParams.Mobius.c; // 1./2.;
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// These lines are unecessary if BC are all periodic
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std::vector<Complex> boundary = {1,1,1,-1};
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FermionAction::ImplParams Params(boundary);
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FermionAction DenOp(U,*FGrid,*FrbGrid,*GridPtr,*GridRBPtr,mass,M5,b,c, Params);
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FermionAction NumOp(U,*FGrid,*FrbGrid,*GridPtr,*GridRBPtr,pv, M5,b,c, Params);
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//double StoppingCondition = 1e-8;
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//double MaxCGIterations = 10000;
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ConjugateGradient<FermionField> CG(MyParams.Mobius.StoppingCondition,MyParams.Mobius.MaxCGIterations);
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TwoFlavourEvenOddRatioPseudoFermionAction<FermionImplPolicy> Nf2(NumOp, DenOp,CG,CG);
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// Set smearing (true/false), default: false
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Nf2.is_smeared = ApplySmearing;
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// Collect actions
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ActionLevel<HMCWrapper::Field> Level1(1);
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Level1.push_back(&Nf2);
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ActionLevel<HMCWrapper::Field> Level2(4);
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Level2.push_back(&Waction);
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TheHMC.TheAction.push_back(Level1);
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TheHMC.TheAction.push_back(Level2);
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/////////////////////////////////////////////////////////////
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// HMC parameters are serialisable
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TheHMC.Parameters.initialize(Reader);
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/*
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TheHMC.Parameters.MD.MDsteps = 20;
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TheHMC.Parameters.MD.trajL = 1.0;
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*/
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// Reset performance counters
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if (ApplySmearing){
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SmearingParameters SmPar(Reader);
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//double rho = 0.1; // smearing parameter
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//int Nsmear = 3; // number of smearing levels
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Smear_Stout<HMCWrapper::ImplPolicy> Stout(SmPar.rho);
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SmearedConfiguration<HMCWrapper::ImplPolicy> SmearingPolicy(GridPtr, SmPar.Nsmear, Stout);
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TheHMC.Run(SmearingPolicy); // for smearing
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} else {
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TheHMC.Run(); // no smearing
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}
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Grid_finalize();
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} // main
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/* Examples for input files
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JSON
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{
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"Checkpointer": {
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"config_prefix": "ckpoint_json_lat",
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"rng_prefix": "ckpoint_json_rng",
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"saveInterval": 1,
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"format": "IEEE64BIG"
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},
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"RandomNumberGenerator": {
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"serial_seeds": "1 2 3 4 6",
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"parallel_seeds": "6 7 8 9 11"
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},
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"Action":{
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"gauge_beta": 5.6,
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"Mobius": {
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"Ls" : 10,
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"mass": 0.01,
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"M5" : 1.0,
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"b" : 1.5,
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"c" : 0.5,
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"StoppingCondition": 1e-8,
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"MaxCGIterations": 10000,
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"ApplySmearing": true
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}
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},
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"HMC":{
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"StartTrajectory": 0,
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"Trajectories": 100,
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"MetropolisTest": true,
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"NoMetropolisUntil": 10,
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"StartingType": "HotStart",
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"MD":{
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"name": "MinimumNorm2",
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"MDsteps": 15,
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"trajL": 2.0
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}
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},
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"StoutSmearing":{
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"rho": 0.1,
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"Nsmear": 3
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}
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}
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XML example not provided yet
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*/
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