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Grid/tests/Test_wilson_cg_schur.cc
Peter Boyle 26e9b04fab CG test written and passes i.e. converges with small true residual
in RedBlack MpcDagMpc, Unprec MdagM and Schur red black solver for
each of.

DomainWallFermion
MobiusFermion
MobiusZolotarevFermion
ScaledShamirFermion
ScaledShamirZolotarevFermion
2015-06-03 10:54:03 +01:00

49 lines
1.1 KiB
C++

#include <Grid.h>
using namespace std;
using namespace Grid;
using namespace Grid::QCD;
template<class d>
struct scal {
d internal;
};
Gamma::GammaMatrix Gmu [] = {
Gamma::GammaX,
Gamma::GammaY,
Gamma::GammaZ,
Gamma::GammaT
};
int main (int argc, char ** argv)
{
Grid_init(&argc,&argv);
std::vector<int> latt_size = GridDefaultLatt();
std::vector<int> simd_layout = GridDefaultSimd(Nd,vComplexF::Nsimd());
std::vector<int> mpi_layout = GridDefaultMpi();
GridCartesian Grid(latt_size,simd_layout,mpi_layout);
GridRedBlackCartesian RBGrid(latt_size,simd_layout,mpi_layout);
std::vector<int> seeds({1,2,3,4});
GridParallelRNG pRNG(&Grid); pRNG.SeedFixedIntegers(seeds);
LatticeGaugeField Umu(&Grid); random(pRNG,Umu);
LatticeFermion src(&Grid); random(pRNG,src);
LatticeFermion result(&Grid); result=zero;
LatticeFermion resid(&Grid);
RealD mass=0.5;
WilsonFermion Dw(Umu,Grid,RBGrid,mass);
ConjugateGradient<LatticeFermion> CG(1.0e-8,10000);
SchurRedBlackSolve<LatticeFermion> SchurSolver(CG);
SchurSolver(Dw,src,result);
Grid_finalize();
}