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Peter Boyle
441
HMC/Mobius2p1fEOFA_F1.cc
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441
HMC/Mobius2p1fEOFA_F1.cc
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/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file:
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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
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Author: David Murphy
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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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#define MIXED_PRECISION
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namespace Grid{
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namespace QCD{
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/*
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* Need a plan for gauge field update for mixed precision in HMC (2x speed up)
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* -- Store the single prec action operator.
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* -- Clone the gauge field from the operator function argument.
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* -- Build the mixed precision operator dynamically from the passed operator and single prec clone.
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*/
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template<class FermionOperatorD, class FermionOperatorF, class SchurOperatorD, class SchurOperatorF>
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class MixedPrecisionConjugateGradientOperatorFunction : public OperatorFunction<typename FermionOperatorD::FermionField> {
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public:
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typedef typename FermionOperatorD::FermionField FieldD;
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typedef typename FermionOperatorF::FermionField FieldF;
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RealD Tolerance;
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RealD InnerTolerance; //Initial tolerance for inner CG. Defaults to Tolerance but can be changed
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Integer MaxInnerIterations;
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Integer MaxOuterIterations;
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GridBase* SinglePrecGrid4; //Grid for single-precision fields
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GridBase* SinglePrecGrid5; //Grid for single-precision fields
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RealD OuterLoopNormMult; //Stop the outer loop and move to a final double prec solve when the residual is OuterLoopNormMult * Tolerance
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FermionOperatorF &FermOpF;
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FermionOperatorD &FermOpD;;
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SchurOperatorF &LinOpF;
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SchurOperatorD &LinOpD;
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Integer TotalInnerIterations; //Number of inner CG iterations
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Integer TotalOuterIterations; //Number of restarts
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Integer TotalFinalStepIterations; //Number of CG iterations in final patch-up step
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MixedPrecisionConjugateGradientOperatorFunction(RealD tol,
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Integer maxinnerit,
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Integer maxouterit,
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GridBase* _sp_grid4,
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GridBase* _sp_grid5,
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FermionOperatorF &_FermOpF,
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FermionOperatorD &_FermOpD,
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SchurOperatorF &_LinOpF,
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SchurOperatorD &_LinOpD):
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LinOpF(_LinOpF),
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LinOpD(_LinOpD),
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FermOpF(_FermOpF),
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FermOpD(_FermOpD),
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Tolerance(tol),
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InnerTolerance(tol),
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MaxInnerIterations(maxinnerit),
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MaxOuterIterations(maxouterit),
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SinglePrecGrid4(_sp_grid4),
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SinglePrecGrid5(_sp_grid5),
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OuterLoopNormMult(100.)
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{
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/* Debugging instances of objects; references are stored
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std::cout << GridLogMessage << " Mixed precision CG wrapper LinOpF " <<std::hex<< &LinOpF<<std::dec <<std::endl;
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std::cout << GridLogMessage << " Mixed precision CG wrapper LinOpD " <<std::hex<< &LinOpD<<std::dec <<std::endl;
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std::cout << GridLogMessage << " Mixed precision CG wrapper FermOpF " <<std::hex<< &FermOpF<<std::dec <<std::endl;
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std::cout << GridLogMessage << " Mixed precision CG wrapper FermOpD " <<std::hex<< &FermOpD<<std::dec <<std::endl;
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*/
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};
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void operator()(LinearOperatorBase<FieldD> &LinOpU, const FieldD &src, FieldD &psi) {
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std::cout << GridLogMessage << " Mixed precision CG wrapper operator() "<<std::endl;
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SchurOperatorD * SchurOpU = static_cast<SchurOperatorD *>(&LinOpU);
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// std::cout << GridLogMessage << " Mixed precision CG wrapper operator() FermOpU " <<std::hex<< &(SchurOpU->_Mat)<<std::dec <<std::endl;
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// std::cout << GridLogMessage << " Mixed precision CG wrapper operator() FermOpD " <<std::hex<< &(LinOpD._Mat) <<std::dec <<std::endl;
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// Assumption made in code to extract gauge field
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// We could avoid storing LinopD reference alltogether ?
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assert(&(SchurOpU->_Mat)==&(LinOpD._Mat));
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////////////////////////////////////////////////////////////////////////////////////
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// Must snarf a single precision copy of the gauge field in Linop_d argument
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////////////////////////////////////////////////////////////////////////////////////
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typedef typename FermionOperatorF::GaugeField GaugeFieldF;
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typedef typename FermionOperatorF::GaugeLinkField GaugeLinkFieldF;
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typedef typename FermionOperatorD::GaugeField GaugeFieldD;
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typedef typename FermionOperatorD::GaugeLinkField GaugeLinkFieldD;
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GridBase * GridPtrF = SinglePrecGrid4;
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GridBase * GridPtrD = FermOpD.Umu.Grid();
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GaugeFieldF U_f (GridPtrF);
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GaugeLinkFieldF Umu_f(GridPtrF);
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// std::cout << " Dim gauge field "<<GridPtrF->Nd()<<std::endl; // 4d
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// std::cout << " Dim gauge field "<<GridPtrD->Nd()<<std::endl; // 4d
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////////////////////////////////////////////////////////////////////////////////////
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// Moving this to a Clone method of fermion operator would allow to duplicate the
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// physics parameters and decrease gauge field copies
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////////////////////////////////////////////////////////////////////////////////////
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GaugeLinkFieldD Umu_d(GridPtrD);
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for(int mu=0;mu<Nd*2;mu++){
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Umu_d = PeekIndex<LorentzIndex>(FermOpD.Umu, mu);
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precisionChange(Umu_f,Umu_d);
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PokeIndex<LorentzIndex>(FermOpF.Umu, Umu_f, mu);
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}
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pickCheckerboard(Even,FermOpF.UmuEven,FermOpF.Umu);
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pickCheckerboard(Odd ,FermOpF.UmuOdd ,FermOpF.Umu);
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////////////////////////////////////////////////////////////////////////////////////
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// Make a mixed precision conjugate gradient
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////////////////////////////////////////////////////////////////////////////////////
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MixedPrecisionConjugateGradient<FieldD,FieldF> MPCG(Tolerance,MaxInnerIterations,MaxOuterIterations,SinglePrecGrid5,LinOpF,LinOpD);
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std::cout << GridLogMessage << "Calling mixed precision Conjugate Gradient" <<std::endl;
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MPCG(src,psi);
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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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using namespace Grid::QCD;
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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 WilsonImplR FermionImplPolicy;
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typedef MobiusFermionR FermionAction;
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typedef MobiusFermionF FermionActionF;
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typedef MobiusEOFAFermionR FermionEOFAAction;
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typedef MobiusEOFAFermionF FermionEOFAActionF;
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typedef typename FermionAction::FermionField FermionField;
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typedef typename FermionActionF::FermionField FermionFieldF;
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typedef Grid::XmlReader Serialiser;
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//::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
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// typedef GenericHMCRunner<LeapFrog> HMCWrapper;
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// typedef GenericHMCRunner<MinimumNorm2> HMCWrapper;
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typedef GenericHMCRunner<ForceGradient> HMCWrapper;
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HMCparameters HMCparams;
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{
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XmlReader HMCrd("HMCparameters.xml");
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read(HMCrd,"HMCparameters",HMCparams);
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std::cout << GridLogMessage<< HMCparams <<std::endl;
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}
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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 = 12;
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Real beta = 2.31;
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Real light_mass = 0.002144;
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Real strange_mass = 0.02144;
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Real pv_mass = 1.0;
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RealD M5 = 1.8;
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RealD b = 1.5;
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RealD c = 0.5;
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// Copied from paper
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std::vector<Real> hasenbusch({ 0.005, 0.017, 0.07, 0.18, 0.45 }); // Paper values from F1 incorrect run
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// std::vector<Real> hasenbusch({ 0.004, 0.016, 0.07, 0.18, 0.45 }); // Paper values from F1 incorrect run 120-130
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// std::vector<Real> hasenbusch({ 0.004, 0.015, 0.07, 0.18, 0.45 }); // Paper values from F1 incorrect run 110-120
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// std::vector<Real> hasenbusch({ 0.005, 0.017, 0.07, 0.18, 0.45 }); // Paper values from F1 incorrect run
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// std::vector<Real> hasenbusch({ 0.01, 0.07, 0.18, 0.45 }); // Experiment?
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///////////////////////////////////////////////////////////////////////////////////////////////
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//Bad choices with large dH. Equalising force L2 norm was not wise.
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///////////////////////////////////////////////////////////////////////////////////////////////
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//std::vector<Real> hasenbusch({ 0.03, 0.2, 0.3, 0.5, 0.8 });
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//std::vector<Real> hasenbusch({ 0.05, 0.2, 0.4, 0.6, 0.8 });
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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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Coordinate latt = GridDefaultLatt();
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Coordinate mpi = GridDefaultMpi();
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Coordinate simdF = GridDefaultSimd(Nd,vComplexF::Nsimd());
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Coordinate simdD = GridDefaultSimd(Nd,vComplexD::Nsimd());
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auto GridPtrF = SpaceTimeGrid::makeFourDimGrid(latt,simdF,mpi);
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auto GridRBPtrF = SpaceTimeGrid::makeFourDimRedBlackGrid(GridPtrF);
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auto FGridF = SpaceTimeGrid::makeFiveDimGrid(Ls,GridPtrF);
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auto FrbGridF = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,GridPtrF);
|
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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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LatticeGaugeFieldF UF(GridPtrF);
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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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FermionActionF::ImplParams ParamsF(boundary);
|
||||||
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|
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double ActionStoppingCondition = 1e-10;
|
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double DerivativeStoppingCondition = 1e-7;
|
||||||
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double DerivativeStoppingConditionLoose = 3e-7;
|
||||||
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double MaxCGIterations = 30000;
|
||||||
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|
||||||
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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(16);
|
||||||
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|
||||||
|
////////////////////////////////////
|
||||||
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// Strange action
|
||||||
|
////////////////////////////////////
|
||||||
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typedef SchurDiagMooeeOperator<FermionActionF,FermionFieldF> LinearOperatorF;
|
||||||
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typedef SchurDiagMooeeOperator<FermionAction ,FermionField > LinearOperatorD;
|
||||||
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typedef SchurDiagMooeeOperator<FermionEOFAActionF,FermionFieldF> LinearOperatorEOFAF;
|
||||||
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typedef SchurDiagMooeeOperator<FermionEOFAAction ,FermionField > LinearOperatorEOFAD;
|
||||||
|
|
||||||
|
typedef MixedPrecisionConjugateGradientOperatorFunction<MobiusFermionD,MobiusFermionF,LinearOperatorD,LinearOperatorF> MxPCG;
|
||||||
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typedef MixedPrecisionConjugateGradientOperatorFunction<MobiusEOFAFermionD,MobiusEOFAFermionF,LinearOperatorEOFAD,LinearOperatorEOFAF> MxPCG_EOFA;
|
||||||
|
|
||||||
|
// DJM: setup for EOFA ratio (Mobius)
|
||||||
|
OneFlavourRationalParams OFRp;
|
||||||
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OFRp.lo = 0.1; // How do I know this on F1?
|
||||||
|
OFRp.hi = 25.0;
|
||||||
|
OFRp.MaxIter = 10000;
|
||||||
|
OFRp.tolerance= 1.0e-9;
|
||||||
|
OFRp.degree = 12;
|
||||||
|
OFRp.precision= 50;
|
||||||
|
|
||||||
|
|
||||||
|
MobiusEOFAFermionR Strange_Op_L (U , *FGrid , *FrbGrid , *GridPtr , *GridRBPtr , strange_mass, strange_mass, pv_mass, 0.0, -1, M5, b, c);
|
||||||
|
MobiusEOFAFermionF Strange_Op_LF(UF, *FGridF, *FrbGridF, *GridPtrF, *GridRBPtrF, strange_mass, strange_mass, pv_mass, 0.0, -1, M5, b, c);
|
||||||
|
MobiusEOFAFermionR Strange_Op_R (U , *FGrid , *FrbGrid , *GridPtr , *GridRBPtr , pv_mass, strange_mass, pv_mass, -1.0, 1, M5, b, c);
|
||||||
|
MobiusEOFAFermionF Strange_Op_RF(UF, *FGridF, *FrbGridF, *GridPtrF, *GridRBPtrF, pv_mass, strange_mass, pv_mass, -1.0, 1, M5, b, c);
|
||||||
|
|
||||||
|
ConjugateGradient<FermionField> ActionCG(ActionStoppingCondition,MaxCGIterations);
|
||||||
|
ConjugateGradient<FermionField> DerivativeCG(DerivativeStoppingCondition,MaxCGIterations);
|
||||||
|
const int MX_inner = 5000;
|
||||||
|
#ifdef MIXED_PRECISION
|
||||||
|
// Mixed precision EOFA
|
||||||
|
LinearOperatorEOFAD Strange_LinOp_L (Strange_Op_L);
|
||||||
|
LinearOperatorEOFAD Strange_LinOp_R (Strange_Op_R);
|
||||||
|
LinearOperatorEOFAF Strange_LinOp_LF(Strange_Op_LF);
|
||||||
|
LinearOperatorEOFAF Strange_LinOp_RF(Strange_Op_RF);
|
||||||
|
|
||||||
|
MxPCG_EOFA ActionCGL(ActionStoppingCondition,
|
||||||
|
MX_inner,
|
||||||
|
MaxCGIterations,
|
||||||
|
GridPtrF,
|
||||||
|
FrbGridF,
|
||||||
|
Strange_Op_LF,Strange_Op_L,
|
||||||
|
Strange_LinOp_LF,Strange_LinOp_L);
|
||||||
|
|
||||||
|
MxPCG_EOFA DerivativeCGL(DerivativeStoppingCondition,
|
||||||
|
MX_inner,
|
||||||
|
MaxCGIterations,
|
||||||
|
GridPtrF,
|
||||||
|
FrbGridF,
|
||||||
|
Strange_Op_LF,Strange_Op_L,
|
||||||
|
Strange_LinOp_LF,Strange_LinOp_L);
|
||||||
|
|
||||||
|
MxPCG_EOFA ActionCGR(ActionStoppingCondition,
|
||||||
|
MX_inner,
|
||||||
|
MaxCGIterations,
|
||||||
|
GridPtrF,
|
||||||
|
FrbGridF,
|
||||||
|
Strange_Op_RF,Strange_Op_R,
|
||||||
|
Strange_LinOp_RF,Strange_LinOp_R);
|
||||||
|
|
||||||
|
MxPCG_EOFA DerivativeCGR(DerivativeStoppingCondition,
|
||||||
|
MX_inner,
|
||||||
|
MaxCGIterations,
|
||||||
|
GridPtrF,
|
||||||
|
FrbGridF,
|
||||||
|
Strange_Op_RF,Strange_Op_R,
|
||||||
|
Strange_LinOp_RF,Strange_LinOp_R);
|
||||||
|
|
||||||
|
ExactOneFlavourRatioPseudoFermionAction<FermionImplPolicy>
|
||||||
|
EOFA(Strange_Op_L, Strange_Op_R,
|
||||||
|
ActionCG,
|
||||||
|
ActionCGL, ActionCGR,
|
||||||
|
DerivativeCGL, DerivativeCGR,
|
||||||
|
OFRp, true);
|
||||||
|
#else
|
||||||
|
ExactOneFlavourRatioPseudoFermionAction<FermionImplPolicy>
|
||||||
|
EOFA(Strange_Op_L, Strange_Op_R,
|
||||||
|
ActionCG,
|
||||||
|
ActionCG, ActionCG,
|
||||||
|
ActionCG, ActionCG,
|
||||||
|
// DerivativeCG, DerivativeCG,
|
||||||
|
OFRp, true);
|
||||||
|
#endif
|
||||||
|
Level1.push_back(&EOFA);
|
||||||
|
|
||||||
|
////////////////////////////////////
|
||||||
|
// up down action
|
||||||
|
////////////////////////////////////
|
||||||
|
std::vector<Real> light_den;
|
||||||
|
std::vector<Real> light_num;
|
||||||
|
|
||||||
|
int n_hasenbusch = hasenbusch.size();
|
||||||
|
light_den.push_back(light_mass);
|
||||||
|
for(int h=0;h<n_hasenbusch;h++){
|
||||||
|
light_den.push_back(hasenbusch[h]);
|
||||||
|
light_num.push_back(hasenbusch[h]);
|
||||||
|
}
|
||||||
|
light_num.push_back(pv_mass);
|
||||||
|
|
||||||
|
//////////////////////////////////////////////////////////////
|
||||||
|
// Forced to replicate the MxPCG and DenominatorsF etc.. because
|
||||||
|
// there is no convenient way to "Clone" physics params from double op
|
||||||
|
// into single op for any operator pair.
|
||||||
|
// Same issue prevents using MxPCG in the Heatbath step
|
||||||
|
//////////////////////////////////////////////////////////////
|
||||||
|
std::vector<FermionAction *> Numerators;
|
||||||
|
std::vector<FermionAction *> Denominators;
|
||||||
|
std::vector<TwoFlavourEvenOddRatioPseudoFermionAction<FermionImplPolicy> *> Quotients;
|
||||||
|
std::vector<MxPCG *> ActionMPCG;
|
||||||
|
std::vector<MxPCG *> MPCG;
|
||||||
|
std::vector<FermionActionF *> DenominatorsF;
|
||||||
|
std::vector<LinearOperatorD *> LinOpD;
|
||||||
|
std::vector<LinearOperatorF *> LinOpF;
|
||||||
|
|
||||||
|
for(int h=0;h<n_hasenbusch+1;h++){
|
||||||
|
|
||||||
|
std::cout << GridLogMessage << " 2f quotient Action "<< light_num[h] << " / " << light_den[h]<< std::endl;
|
||||||
|
|
||||||
|
Numerators.push_back (new FermionAction(U,*FGrid,*FrbGrid,*GridPtr,*GridRBPtr,light_num[h],M5,b,c, Params));
|
||||||
|
Denominators.push_back(new FermionAction(U,*FGrid,*FrbGrid,*GridPtr,*GridRBPtr,light_den[h],M5,b,c, Params));
|
||||||
|
|
||||||
|
#ifdef MIXED_PRECISION
|
||||||
|
////////////////////////////////////////////////////////////////////////////
|
||||||
|
// Mixed precision CG for 2f force
|
||||||
|
////////////////////////////////////////////////////////////////////////////
|
||||||
|
|
||||||
|
DenominatorsF.push_back(new FermionActionF(UF,*FGridF,*FrbGridF,*GridPtrF,*GridRBPtrF,light_den[h],M5,b,c, ParamsF));
|
||||||
|
LinOpD.push_back(new LinearOperatorD(*Denominators[h]));
|
||||||
|
LinOpF.push_back(new LinearOperatorF(*DenominatorsF[h]));
|
||||||
|
|
||||||
|
double conv = DerivativeStoppingCondition;
|
||||||
|
if (h<3) conv= DerivativeStoppingConditionLoose; // Relax on first two hasenbusch factors
|
||||||
|
MPCG.push_back(new MxPCG(conv,
|
||||||
|
MX_inner,
|
||||||
|
MaxCGIterations,
|
||||||
|
GridPtrF,
|
||||||
|
FrbGridF,
|
||||||
|
*DenominatorsF[h],*Denominators[h],
|
||||||
|
*LinOpF[h], *LinOpD[h]) );
|
||||||
|
|
||||||
|
ActionMPCG.push_back(new MxPCG(ActionStoppingCondition,
|
||||||
|
MX_inner,
|
||||||
|
MaxCGIterations,
|
||||||
|
GridPtrF,
|
||||||
|
FrbGridF,
|
||||||
|
*DenominatorsF[h],*Denominators[h],
|
||||||
|
*LinOpF[h], *LinOpD[h]) );
|
||||||
|
|
||||||
|
// Heatbath not mixed yet. As inverts numerators not so important as raised mass.
|
||||||
|
Quotients.push_back (new TwoFlavourEvenOddRatioPseudoFermionAction<FermionImplPolicy>(*Numerators[h],*Denominators[h],*MPCG[h],*ActionMPCG[h],ActionCG));
|
||||||
|
#else
|
||||||
|
////////////////////////////////////////////////////////////////////////////
|
||||||
|
// Standard CG for 2f force
|
||||||
|
////////////////////////////////////////////////////////////////////////////
|
||||||
|
Quotients.push_back (new TwoFlavourEvenOddRatioPseudoFermionAction<FermionImplPolicy>(*Numerators[h],*Denominators[h],DerivativeCG,ActionCG));
|
||||||
|
#endif
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
for(int h=0;h<n_hasenbusch+1;h++){
|
||||||
|
Level1.push_back(Quotients[h]);
|
||||||
|
}
|
||||||
|
|
||||||
|
/////////////////////////////////////////////////////////////
|
||||||
|
// Gauge action
|
||||||
|
/////////////////////////////////////////////////////////////
|
||||||
|
Level2.push_back(&GaugeAction);
|
||||||
|
TheHMC.TheAction.push_back(Level1);
|
||||||
|
TheHMC.TheAction.push_back(Level2);
|
||||||
|
std::cout << GridLogMessage << " Action complete "<< std::endl;
|
||||||
|
|
||||||
|
/////////////////////////////////////////////////////////////
|
||||||
|
// HMC parameters are serialisable
|
||||||
|
|
||||||
|
std::cout << GridLogMessage << " Running the HMC "<< std::endl;
|
||||||
|
TheHMC.Run(); // no smearing
|
||||||
|
|
||||||
|
Grid_finalize();
|
||||||
|
} // main
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
Reference in New Issue
Block a user