Adding HMC test file example for Mobius + smearing

2025-06-13 04:37:05 +01:00 · 2017-05-01 13:44:00 +01:00
parent 3344788fa1
commit 4063238943
4 changed files with 256 additions and 139 deletions
--- a/tests/hmc/Test_hmc_EOMobiusRatio.cc
+++ b/tests/hmc/Test_hmc_EOMobiusRatio.cc
@ -0,0 +1,155 @@
+/*************************************************************************************
+
+Grid physics library, www.github.com/paboyle/Grid
+
+Source file: ./tests/Test_hmc_EODWFRatio.cc
+
+Copyright (C) 2015-2016
+
+Author: Peter Boyle <pabobyle@ph.ed.ac.uk>
+Author: Guido Cossu <guido.cossu@ed.ac.uk>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+See the full license in the file "LICENSE" in the top level distribution
+directory
+*************************************************************************************/
+/*  END LEGAL */
+#include <Grid/Grid.h>
+
+
+
+int main(int argc, char **argv) {
+  using namespace Grid;
+  using namespace Grid::QCD;
+
+  Grid_init(&argc, &argv);
+  int threads = GridThread::GetThreads();
+  // here make a routine to print all the relevant information on the run
+  std::cout << GridLogMessage << "Grid is setup to use " << threads << " threads" << std::endl;
+
+   // Typedefs to simplify notation
+  typedef GenericHMCRunner<MinimumNorm2> HMCWrapper;  // Uses the default minimum norm
+  typedef WilsonImplR FermionImplPolicy;
+  typedef MobiusFermionR FermionAction;
+  typedef typename FermionAction::FermionField FermionField;
+
+  // Apply smearing to the fermionic action
+  bool ApplySmearing = false;
+  
+  //::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+  HMCWrapper TheHMC;
+
+  // Grid from the command line
+  TheHMC.Resources.AddFourDimGrid("gauge");
+  // Possibile to create the module by hand 
+  // hardcoding parameters or using a Reader
+
+
+  // Checkpointer definition
+  CheckpointerParameters CPparams;  
+  CPparams.config_prefix = "ckpoint_EODWF_lat";
+  CPparams.rng_prefix = "ckpoint_EODWF_rng";
+  CPparams.saveInterval = 5;
+  CPparams.format = "IEEE64BIG";
+  
+  TheHMC.Resources.LoadBinaryCheckpointer(CPparams);
+
+  RNGModuleParameters RNGpar;
+  RNGpar.serial_seeds = "1 2 3 4 5";
+  RNGpar.parallel_seeds = "6 7 8 9 10";
+  TheHMC.Resources.SetRNGSeeds(RNGpar);
+
+  // Construct observables
+  // here there is too much indirection 
+  typedef PlaquetteMod<HMCWrapper::ImplPolicy> PlaqObs;
+  TheHMC.Resources.AddObservable<PlaqObs>();
+  //////////////////////////////////////////////
+
+  /////////////////////////////////////////////////////////////
+  // Collect actions, here use more encapsulation
+  // need wrappers of the fermionic classes 
+  // that have a complex construction
+  // standard
+  RealD beta = 5.6 ;
+  WilsonGaugeActionR Waction(beta);
+    
+
+  const int Ls = 8;
+  auto GridPtr   = TheHMC.Resources.GetCartesian();
+  auto GridRBPtr = TheHMC.Resources.GetRBCartesian();
+  auto FGrid     = SpaceTimeGrid::makeFiveDimGrid(Ls,GridPtr);
+  auto FrbGrid   = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,GridPtr);
+
+
+  // temporarily need a gauge field
+  LatticeGaugeField U(GridPtr);
+
+  Real mass = 0.04;
+  Real pv   = 1.0;
+  RealD M5  = 1.5;
+  // Note: IroIro and Grid notation for b and c differ
+  RealD b   = 3./2.;
+  RealD c   = 1./2.;
+
+  FermionAction DenOp(U,*FGrid,*FrbGrid,*GridPtr,*GridRBPtr,mass,M5,b,c);
+  FermionAction NumOp(U,*FGrid,*FrbGrid,*GridPtr,*GridRBPtr,pv,  M5,b,c);
+
+  double StoppingCondition = 1.0e-8;
+  double MaxCGIterations = 10000;
+  ConjugateGradient<FermionField>  CG(StoppingCondition,MaxCGIterations);
+  TwoFlavourEvenOddRatioPseudoFermionAction<FermionImplPolicy> Nf2(NumOp, DenOp,CG,CG);
+
+  // Set smearing (true/false), default: false
+  Nf2.is_smeared = ApplySmearing;
+  
+  // Collect actions
+  ActionLevel<HMCWrapper::Field> Level1(1);
+  Level1.push_back(&Nf2);
+
+  ActionLevel<HMCWrapper::Field> Level2(4);
+  Level2.push_back(&Waction);
+
+  TheHMC.TheAction.push_back(Level1);
+  TheHMC.TheAction.push_back(Level2);
+
+  /////////////////////////////////////////////////////////////
+  // HMC parameters are serialisable 
+  TheHMC.Parameters.MD.MDsteps = 20;
+  TheHMC.Parameters.MD.trajL   = 1.0;
+
+  TheHMC.ReadCommandLine(argc, argv); // these can be parameters from file
+  // Reset performance counters 
+  NumOp.ZeroCounters();
+  DenOp.ZeroCounters();
+
+  if (ApplySmearing){
+    double rho = 0.1;  // smearing parameter
+    int Nsmear = 3;    // number of smearing levels
+    Smear_Stout<HMCWrapper::ImplPolicy> Stout(rho);
+    SmearedConfiguration<HMCWrapper::ImplPolicy> SmearingPolicy(GridPtr, Nsmear, Stout);
+    TheHMC.Run(SmearingPolicy); // for smearing
+  } else {
+    TheHMC.Run();  // no smearing
+  }
+
+  std::cout << GridLogMessage << "Numerator report, Pauli-Villars term         : " << std::endl;
+  NumOp.Report();
+  std::cout << GridLogMessage << "Denominator report, Dw(m) term (includes CG) : " << std::endl;
+  DenOp.Report();
+
+  Grid_finalize();
+} // main
+