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https://github.com/paboyle/Grid.git
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1b3c93e22a
Allows multi-precision work and paves the way for alternate BC's and such like allowing for example G-parity which is important for K pipi programme. In particular, can drive an extra flavour index into the fermion fields using template types.
173 lines
6.6 KiB
C++
173 lines
6.6 KiB
C++
#include <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::GammaMatrix Gmu [] = {
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Gamma::GammaX,
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Gamma::GammaY,
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Gamma::GammaZ,
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Gamma::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); random(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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