/*************************************************************************************
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>
namespace Grid{
struct FermionParameters: Serializable {
GRID_SERIALIZABLE_CLASS_MEMBERS(FermionParameters,
int, Ls,
double, mass,
double, M5,
double, b,
double, c,
double, StoppingCondition,
int, MaxCGIterations,
bool, ApplySmearing);
};
struct MobiusHMCParameters: Serializable {
GRID_SERIALIZABLE_CLASS_MEMBERS(MobiusHMCParameters,
double, gauge_beta,
FermionParameters, Mobius)
template <class ReaderClass >
MobiusHMCParameters(Reader<ReaderClass>& Reader){
read(Reader, "Action", *this);
}
};
struct SmearingParameters: Serializable {
GRID_SERIALIZABLE_CLASS_MEMBERS(SmearingParameters,
double, rho,
Integer, Nsmear)
template <class ReaderClass >
SmearingParameters(Reader<ReaderClass>& Reader){
read(Reader, "StoutSmearing", *this);
}
};
}
int main(int argc, char **argv) {
using namespace Grid;
;
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 MobiusFermionD FermionAction;
typedef typename FermionAction::FermionField FermionField;
// Serialiser
typedef Grid::XmlReader Serialiser;
//typedef Grid::JSONReader Serialiser;
//::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
HMCWrapper TheHMC;
TheHMC.ReadCommandLine(argc, argv); // these can be parameters from file
// Reader, file should come from command line
if (TheHMC.ParameterFile.empty()){
std::cout << "Input file not specified."
<< "Use --ParameterFile option in the command line.\nAborting"
<< std::endl;
exit(1);
}
Serialiser Reader(TheHMC.ParameterFile);
MobiusHMCParameters MyParams(Reader);
// Apply smearing to the fermionic action
bool ApplySmearing = MyParams.Mobius.ApplySmearing;
// Use this if you want to tweak the default decomposition
// commented out as very architecture speficic
//std::vector<int> simd_lanes({2,2,1,1});
// Grid from the command line arguments --grid and --mpi
// drop the simd_lanes argument to fall back to the default decomposition for the SIMD lanes
//TheHMC.Resources.AddFourDimGrid("gauge", simd_lanes); // tweak the SIMD lanes
TheHMC.Resources.AddFourDimGrid("gauge"); // use default simd lanes decomposition
// Possibile to create the module by hand
// hardcoding parameters or using a Reader
// Checkpointer definition (Name: Checkpointer)
CheckpointerParameters CPparams(Reader);
// Commenting out since we are using the reader
/*
CPparams.config_prefix = "ckpoint_EODWF_lat";
CPparams.rng_prefix = "ckpoint_EODWF_rng";
CPparams.saveInterval = 5;
CPparams.format = "IEEE64BIG";
*/
TheHMC.Resources.LoadNerscCheckpointer(CPparams);
// RNG definition (Name: RandomNumberGenerator)
RNGModuleParameters RNGpar(Reader);
// Commenting out since we are using the reader
/*
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(MyParams.gauge_beta);
//const int Ls = 8;
const int Ls = MyParams.Mobius.Ls;
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 = MyParams.Mobius.mass; //0.04;
Real pv = 1.0;
RealD M5 = MyParams.Mobius.M5; //1.5;
// Note: IroIro and Grid notation for b and c differ
RealD b = MyParams.Mobius.b; // 3./2.;
RealD c = MyParams.Mobius.c; // 1./2.;
// These lines are unecessary if BC are all periodic
std::vector<Complex> boundary = {1,1,1,-1};
FermionAction::ImplParams Params(boundary);
FermionAction DenOp(U,*FGrid,*FrbGrid,*GridPtr,*GridRBPtr,mass,M5,b,c, Params);
FermionAction NumOp(U,*FGrid,*FrbGrid,*GridPtr,*GridRBPtr,pv, M5,b,c, Params);
//double StoppingCondition = 1e-8;
//double MaxCGIterations = 10000;
ConjugateGradient<FermionField> CG(MyParams.Mobius.StoppingCondition,MyParams.Mobius.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.initialize(Reader);
/*
TheHMC.Parameters.MD.MDsteps = 20;
TheHMC.Parameters.MD.trajL = 1.0;
*/
// Reset performance counters
if (ApplySmearing){
SmearingParameters SmPar(Reader);
//double rho = 0.1; // smearing parameter
//int Nsmear = 3; // number of smearing levels
Smear_Stout<HMCWrapper::ImplPolicy> Stout(SmPar.rho);
SmearedConfiguration<HMCWrapper::ImplPolicy> SmearingPolicy(GridPtr, SmPar.Nsmear, Stout);
TheHMC.Run(SmearingPolicy); // for smearing
} else {
TheHMC.Run(); // no smearing
}
Grid_finalize();
} // main
/* Examples for input files
JSON
{
"Checkpointer": {
"config_prefix": "ckpoint_json_lat",
"rng_prefix": "ckpoint_json_rng",
"saveInterval": 1,
"format": "IEEE64BIG"
},
"RandomNumberGenerator": {
"serial_seeds": "1 2 3 4 6",
"parallel_seeds": "6 7 8 9 11"
},
"Action":{
"gauge_beta": 5.6,
"Mobius": {
"Ls" : 10,
"mass": 0.01,
"M5" : 1.0,
"b" : 1.5,
"c" : 0.5,
"StoppingCondition": 1e-8,
"MaxCGIterations": 10000,
"ApplySmearing": true
}
},
"HMC":{
"StartTrajectory": 0,
"Trajectories": 100,
"MetropolisTest": true,
"NoMetropolisUntil": 10,
"StartingType": "HotStart",
"MD":{
"name": "MinimumNorm2",
"MDsteps": 15,
"trajL": 2.0
}
},
"StoutSmearing":{
"rho": 0.1,
"Nsmear": 3
}
}
XML example not provided yet
*/