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202 lines
7.8 KiB
C++
202 lines
7.8 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./tests/Test_cayley_cg.cc
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Copyright (C) 2015
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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Author: paboyle <paboyle@ph.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 directory
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*************************************************************************************/
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/* END LEGAL */
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#include <Grid/Grid.h>
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using namespace std;
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using namespace Grid;
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using namespace Grid::QCD;
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template<class d>
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struct scal {
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d internal;
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};
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Gamma::Algebra Gmu [] = {
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Gamma::Algebra::GammaX,
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Gamma::Algebra::GammaY,
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Gamma::Algebra::GammaZ,
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Gamma::Algebra::GammaT
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};
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template<class What>
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void TestCGinversions(What & Ddwf,
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GridCartesian * FGrid, GridRedBlackCartesian * FrbGrid,
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GridCartesian * UGrid, GridRedBlackCartesian * UrbGrid,
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RealD mass, RealD M5,
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GridParallelRNG *RNG4,
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GridParallelRNG *RNG5);
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template<class What>
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void TestCGschur(What & Ddwf,
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GridCartesian * FGrid, GridRedBlackCartesian * FrbGrid,
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GridCartesian * UGrid, GridRedBlackCartesian * UrbGrid,
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RealD mass, RealD M5,
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GridParallelRNG *RNG4,
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GridParallelRNG *RNG5);
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template<class What>
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void TestCGunprec(What & Ddwf,
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GridCartesian * FGrid, GridRedBlackCartesian * FrbGrid,
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GridCartesian * UGrid, GridRedBlackCartesian * UrbGrid,
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RealD mass, RealD M5,
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GridParallelRNG *RNG4,
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GridParallelRNG *RNG5);
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template<class What>
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void TestCGprec(What & Ddwf,
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GridCartesian * FGrid, GridRedBlackCartesian * FrbGrid,
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GridCartesian * UGrid, GridRedBlackCartesian * UrbGrid,
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RealD mass, RealD M5,
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GridParallelRNG *RNG4,
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GridParallelRNG *RNG5);
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int main (int argc, char ** argv)
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{
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Grid_init(&argc,&argv);
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int threads = GridThread::GetThreads();
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std::cout<<GridLogMessage << "Grid is setup to use "<<threads<<" threads"<<std::endl;
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const int Ls=8;
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GridCartesian * UGrid = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
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GridRedBlackCartesian * UrbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
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GridCartesian * FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls,UGrid);
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GridRedBlackCartesian * FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,UGrid);
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std::vector<int> seeds4({1,2,3,4});
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std::vector<int> seeds5({5,6,7,8});
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GridParallelRNG RNG5(FGrid); RNG5.SeedFixedIntegers(seeds5);
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GridParallelRNG RNG4(UGrid); RNG4.SeedFixedIntegers(seeds4);
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LatticeGaugeField Umu(UGrid);
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SU3::HotConfiguration(RNG4,Umu);
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std::vector<LatticeColourMatrix> U(4,UGrid);
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RealD mass=0.1;
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RealD M5 =1.8;
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std::cout<<GridLogMessage <<"DomainWallFermion test"<<std::endl;
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DomainWallFermionR Ddwf(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5);
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TestCGinversions<DomainWallFermionR>(Ddwf,FGrid,FrbGrid,UGrid,UrbGrid,mass,M5,&RNG4,&RNG5);
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RealD b=1.5;// Scale factor b+c=2, b-c=1
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RealD c=0.5;
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std::cout<<GridLogMessage <<"MobiusFermion test"<<std::endl;
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MobiusFermionR Dmob(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5,b,c);
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TestCGinversions<MobiusFermionR>(Dmob,FGrid,FrbGrid,UGrid,UrbGrid,mass,M5,&RNG4,&RNG5);
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std::cout<<GridLogMessage <<"MobiusZolotarevFermion test"<<std::endl;
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MobiusZolotarevFermionR Dzolo(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5,b,c,0.1,2.0);
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TestCGinversions<MobiusZolotarevFermionR>(Dzolo,FGrid,FrbGrid,UGrid,UrbGrid,mass,M5,&RNG4,&RNG5);
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std::cout<<GridLogMessage <<"ScaledShamirFermion test"<<std::endl;
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ScaledShamirFermionR Dsham(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5,2.0);
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TestCGinversions<ScaledShamirFermionR>(Dsham,FGrid,FrbGrid,UGrid,UrbGrid,mass,M5,&RNG4,&RNG5);
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std::cout<<GridLogMessage <<"ShamirZolotarevFermion test"<<std::endl;
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ShamirZolotarevFermionR Dshamz(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5,0.1,2.0);
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TestCGinversions<ShamirZolotarevFermionR>(Dshamz,FGrid,FrbGrid,UGrid,UrbGrid,mass,M5,&RNG4,&RNG5);
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std::cout<<GridLogMessage <<"OverlapWilsonCayleyTanhFermion test"<<std::endl;
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OverlapWilsonCayleyTanhFermionR Dov(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5,1.0);
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TestCGinversions<OverlapWilsonCayleyTanhFermionR>(Dov,FGrid,FrbGrid,UGrid,UrbGrid,mass,M5,&RNG4,&RNG5);
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std::cout<<GridLogMessage <<"OverlapWilsonCayleyZolotarevFermion test"<<std::endl;
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OverlapWilsonCayleyZolotarevFermionR Dovz(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5,0.1,2.0);
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TestCGinversions<OverlapWilsonCayleyZolotarevFermionR>(Dovz,FGrid,FrbGrid,UGrid,UrbGrid,mass,M5,&RNG4,&RNG5);
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Grid_finalize();
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}
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template<class What>
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void TestCGinversions(What & Ddwf,
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GridCartesian * FGrid, GridRedBlackCartesian * FrbGrid,
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GridCartesian * UGrid, GridRedBlackCartesian * UrbGrid,
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RealD mass, RealD M5,
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GridParallelRNG *RNG4,
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GridParallelRNG *RNG5)
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{
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std::cout<<GridLogMessage << "Testing unpreconditioned inverter"<<std::endl;
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TestCGunprec<What>(Ddwf,FGrid,FrbGrid,UGrid,UrbGrid,mass,M5,RNG4,RNG5);
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std::cout<<GridLogMessage << "Testing red black preconditioned inverter"<<std::endl;
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TestCGprec<What>(Ddwf,FGrid,FrbGrid,UGrid,UrbGrid,mass,M5,RNG4,RNG5);
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std::cout<<GridLogMessage << "Testing red black Schur inverter"<<std::endl;
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TestCGschur<What>(Ddwf,FGrid,FrbGrid,UGrid,UrbGrid,mass,M5,RNG4,RNG5);
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}
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template<class What>
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void TestCGunprec(What & Ddwf,
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GridCartesian * FGrid, GridRedBlackCartesian * FrbGrid,
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GridCartesian * UGrid, GridRedBlackCartesian * UrbGrid,
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RealD mass, RealD M5,
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GridParallelRNG *RNG4,
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GridParallelRNG *RNG5)
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{
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LatticeFermion src (FGrid); random(*RNG5,src);
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LatticeFermion result(FGrid); result=zero;
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MdagMLinearOperator<What,LatticeFermion> HermOp(Ddwf);
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ConjugateGradient<LatticeFermion> CG(1.0e-8,10000);
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CG(HermOp,src,result);
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}
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template<class What>
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void TestCGprec(What & Ddwf,
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GridCartesian * FGrid, GridRedBlackCartesian * FrbGrid,
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GridCartesian * UGrid, GridRedBlackCartesian * UrbGrid,
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RealD mass, RealD M5,
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GridParallelRNG *RNG4,
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GridParallelRNG *RNG5)
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{
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LatticeFermion src (FGrid); random(*RNG5,src);
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LatticeFermion src_o(FrbGrid);
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LatticeFermion result_o(FrbGrid);
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pickCheckerboard(Odd,src_o,src);
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result_o=zero;
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SchurDiagMooeeOperator<What,LatticeFermion> HermOpEO(Ddwf);
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ConjugateGradient<LatticeFermion> CG(1.0e-8,10000);
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CG(HermOpEO,src_o,result_o);
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}
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template<class What>
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void TestCGschur(What & Ddwf,
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GridCartesian * FGrid, GridRedBlackCartesian * FrbGrid,
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GridCartesian * UGrid, GridRedBlackCartesian * UrbGrid,
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RealD mass, RealD M5,
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GridParallelRNG *RNG4,
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GridParallelRNG *RNG5)
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{
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LatticeFermion src (FGrid); random(*RNG5,src);
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LatticeFermion result(FGrid); result=zero;
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ConjugateGradient<LatticeFermion> CG(1.0e-8,10000);
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SchurRedBlackDiagMooeeSolve<LatticeFermion> SchurSolver(CG);
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SchurSolver(Ddwf,src,result);
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}
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