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Peter Boyle
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HMC/Mobius2p1f_DD_RHMC.cc
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232
HMC/Mobius2p1f_DD_RHMC.cc
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/*************************************************************************************
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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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int main(int argc, char **argv) {
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using namespace Grid;
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Grid_init(&argc, &argv);
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int threads = GridThread::GetThreads();
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// Typedefs to simplify notation
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typedef WilsonImplR FermionImplPolicy;
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typedef MobiusFermionR FermionAction;
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typedef typename FermionAction::FermionField FermionField;
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typedef Grid::XmlReader Serialiser;
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//::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
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IntegratorParameters MD;
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// typedef GenericHMCRunner<LeapFrog> HMCWrapper;
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// MD.name = std::string("Leap Frog");
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// typedef GenericHMCRunner<ForceGradient> HMCWrapper;
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// MD.name = std::string("Force Gradient");
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typedef GenericHMCRunner<MinimumNorm2> HMCWrapper;
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MD.name = std::string("MinimumNorm2");
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MD.MDsteps = 10;
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MD.trajL = 1.0;
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HMCparameters HMCparams;
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HMCparams.StartTrajectory = 0;
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HMCparams.Trajectories = 200;
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HMCparams.NoMetropolisUntil= 0;
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// "[HotStart, ColdStart, TepidStart, CheckpointStart]\n";
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HMCparams.StartingType =std::string("ColdStart");
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// HMCparams.StartingType =std::string("CheckpointStart");
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HMCparams.MD = MD;
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HMCWrapper TheHMC(HMCparams);
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// Grid from the command line arguments --grid and --mpi
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TheHMC.Resources.AddFourDimGrid("gauge"); // use default simd lanes decomposition
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CheckpointerParameters CPparams;
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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 = 1;
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CPparams.format = "IEEE64BIG";
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TheHMC.Resources.LoadNerscCheckpointer(CPparams);
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RNGModuleParameters RNGpar;
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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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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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const int Ls = 16;
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Real beta = 2.13;
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Real light_mass = 0.01;
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Real strange_mass = 0.04;
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Real pv_mass = 1.0;
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RealD M5 = 1.8;
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RealD b = 1.0;
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RealD c = 0.0;
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// FIXME:
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// Same in MC and MD
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// Need to mix precision too
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OneFlavourRationalParams OFRp;
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OFRp.lo = 4.0e-3;
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OFRp.hi = 30.0;
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OFRp.MaxIter = 10000;
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OFRp.tolerance= 1.0e-10;
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OFRp.degree = 16;
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OFRp.precision= 50;
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std::vector<Real> hasenbusch({ 0.01, 0.04, 0.2 , pv_mass });
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std::vector<bool> dirichlet ({ true, true, true });
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auto GridPtr = TheHMC.Resources.GetCartesian();
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auto GridRBPtr = TheHMC.Resources.GetRBCartesian();
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////////////////////////////////////////////////////////////////
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// Domain decomposed
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////////////////////////////////////////////////////////////////
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Coordinate latt4 = GridPtr->GlobalDimensions();
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Coordinate mpi = GridPtr->ProcessorGrid();
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Coordinate shm;
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GlobalSharedMemory::GetShmDims(mpi,shm);
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Coordinate CommDim(Nd);
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for(int d=0;d<Nd;d++) CommDim[d]= (mpi[d]/shm[d])>1 ? 1 : 0;
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Coordinate Dirichlet(Nd+1,0);
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Dirichlet[1] = CommDim[0]*latt4[0]/mpi[0] * shm[0];
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Dirichlet[2] = CommDim[1]*latt4[1]/mpi[1] * shm[1];
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Dirichlet[3] = CommDim[2]*latt4[2]/mpi[2] * shm[2];
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Dirichlet[4] = CommDim[3]*latt4[3]/mpi[3] * shm[3];
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Coordinate Block4(Nd);
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Block4[0] = Dirichlet[1];
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Block4[1] = Dirichlet[2];
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Block4[2] = Dirichlet[3];
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Block4[3] = Dirichlet[4];
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TheHMC.Resources.SetMomentumFilter(new DDHMCFilter<WilsonImplR::Field>(Block4));
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//////////////////////////
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// Fermion Grid
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//////////////////////////
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auto FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls,GridPtr);
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auto FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,GridPtr);
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IwasakiGaugeActionR GaugeAction(beta);
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// temporarily need a gauge field
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LatticeGaugeField U(GridPtr);
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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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double StoppingCondition = 1e-10;
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double MaxCGIterations = 30000;
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ConjugateGradient<FermionField> CG(StoppingCondition,MaxCGIterations);
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////////////////////////////////////
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// Collect actions
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////////////////////////////////////
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ActionLevel<HMCWrapper::Field> Level1(1);
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ActionLevel<HMCWrapper::Field> Level2(2);
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ActionLevel<HMCWrapper::Field> Level3(4);
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////////////////////////////////////
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// Strange action
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////////////////////////////////////
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FermionAction StrangeOp (U,*FGrid,*FrbGrid,*GridPtr,*GridRBPtr,strange_mass,M5,b,c, Params);
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FermionAction StrangePauliVillarsOp(U,*FGrid,*FrbGrid,*GridPtr,*GridRBPtr,pv_mass, M5,b,c, Params);
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OneFlavourEvenOddRatioRationalPseudoFermionAction<FermionImplPolicy> StrangePseudoFermion(StrangePauliVillarsOp,StrangeOp,OFRp);
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// Level1.push_back(&StrangePseudoFermion);
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////////////////////////////////////
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// up down action
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////////////////////////////////////
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std::vector<Real> light_den;
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std::vector<Real> light_num;
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std::vector<int> dirichlet_den;
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std::vector<int> dirichlet_num;
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int n_hasenbusch = hasenbusch.size();
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light_den.push_back(light_mass);
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dirichlet_den.push_back(0);
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for(int h=0;h<n_hasenbusch;h++){
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light_den.push_back(hasenbusch[h]);
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light_num.push_back(hasenbusch[h]);
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dirichlet_num.push_back(1);
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dirichlet_den.push_back(1);
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}
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light_num.push_back(pv_mass);
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dirichlet_num.push_back(0);
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std::vector<FermionAction *> Numerators;
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std::vector<FermionAction *> Denominators;
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std::vector<TwoFlavourEvenOddRatioPseudoFermionAction<FermionImplPolicy> *> Quotients;
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for(int h=0;h<n_hasenbusch+1;h++){
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std::cout << GridLogMessage << " 2f quotient Action "<< light_num[h]<< " (" << dirichlet_num[h]
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<<") / " << light_den[h]<< " (" << dirichlet_den[h]<<")"<< std::endl;
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Numerators.push_back (new FermionAction(U,*FGrid,*FrbGrid,*GridPtr,*GridRBPtr,light_num[h],M5,b,c, Params));
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Denominators.push_back(new FermionAction(U,*FGrid,*FrbGrid,*GridPtr,*GridRBPtr,light_den[h],M5,b,c, Params));
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Quotients.push_back (new TwoFlavourEvenOddRatioPseudoFermionAction<FermionImplPolicy>(*Numerators[h],*Denominators[h],CG,CG));
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if ( dirichlet_den[h]==1) Denominators[h]->DirichletBlock(Dirichlet);
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if ( dirichlet_num[h]==1) Numerators[h]->DirichletBlock(Dirichlet);
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}
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int nquo=Quotients.size();
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Level1.push_back(Quotients[0]);
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Level1.push_back(Quotients[nquo-1]);
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for(int h=1;h<nquo-1;h++){
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Level2.push_back(Quotients[h]);
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}
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/////////////////////////////////////////////////////////////
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// Gauge action
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/////////////////////////////////////////////////////////////
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Level3.push_back(&GaugeAction);
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TheHMC.TheAction.push_back(Level1);
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TheHMC.TheAction.push_back(Level2);
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TheHMC.TheAction.push_back(Level3);
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std::cout << GridLogMessage << " Action complete "<< std::endl;
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/////////////////////////////////////////////////////////////
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std::cout << GridLogMessage << " Running the HMC "<< std::endl;
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TheHMC.Run(); // no smearing
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Grid_finalize();
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} // main
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