portelli/Grid
1
0
Fork 0
mirror of https://github.com/paboyle/Grid.git synced 2025-06-19 08:17:05 +01:00
Code Releases Activity

CG test written and passes i.e. converges with small true residual

Browse Source 
in RedBlack MpcDagMpc, Unprec MdagM and Schur red black solver for
each of.

DomainWallFermion
MobiusFermion
MobiusZolotarevFermion
ScaledShamirFermion
ScaledShamirZolotarevFermion
This commit is contained in:
Peter Boyle
2015-06-03 10:54:03 +01:00
parent 260011670e
commit 84b5c7217d
30 changed files with 241 additions and 74 deletions
Download Patch File Download Diff File Expand all files Collapse all files

61
tests/Test_wilson_cg_prec.cc Normal file
View File

@ -0,0 +1,61 @@
#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);
LatticeFermion src(&Grid); random(pRNG,src);
RealD nrm = norm2(src);
LatticeFermion result(&Grid); result=zero;
LatticeGaugeField Umu(&Grid); random(pRNG,Umu);
std::vector<LatticeColourMatrix> U(4,&Grid);
for(int mu=0;mu<Nd;mu++){
U[mu] = peekIndex<LorentzIndex>(Umu,mu);
}
RealD mass=0.5;
WilsonFermion Dw(Umu,Grid,RBGrid,mass);
// HermitianOperator<WilsonFermion,LatticeFermion> HermOp(Dw);
// ConjugateGradient<LatticeFermion> CG(1.0e-8,10000);
// CG(HermOp,src,result);
LatticeFermion src_o(&RBGrid);
LatticeFermion result_o(&RBGrid);
pickCheckerboard(Odd,src_o,src);
result_o=zero;
HermitianCheckerBoardedOperator<WilsonFermion,LatticeFermion> HermOpEO(Dw);
ConjugateGradient<LatticeFermion> CG(1.0e-8,10000);
CG(HermOpEO,src_o,result_o);
Grid_finalize();
}