portelli/Grid
1
0
Fork 0
mirror of https://github.com/paboyle/Grid.git synced 2024-11-10 07:55:35 +00:00
Code Releases Activity

QMR

Browse Source
This commit is contained in:
Peter Boyle 2019-12-09 02:59:49 -05:00
parent 295e535f93
commit 876d9c957c
1 changed files with 66 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

66
tests/solver/Test_wilson_qmr_unprec.cc Normal file
View File

@ -0,0 +1,66 @@
/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./tests/Test_dwf_cr_unprec.cc
Copyright (C) 2019
Author: Peter Boyle <pboyle@bnl.gov>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
See the full license in the file "LICENSE" in the top level distribution directory
*************************************************************************************/
/* END LEGAL */
#include <Grid/Grid.h>
#include <Grid/algorithms/iterative/QuasiMinimalResidual.h>
using namespace std;
using namespace Grid;
int main (int argc, char ** argv)
{
Grid_init(&argc,&argv);
GridCartesian * Grid = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
GridRedBlackCartesian * rbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(Grid);
std::vector<int> seeds4({1,2,3,4});
GridParallelRNG RNG4(Grid); RNG4.SeedFixedIntegers(seeds4);
LatticeFermion src(Grid); random(RNG4,src);
LatticeFermion result(Grid); result=Zero();
LatticeGaugeField Umu(Grid); SU3::HotConfiguration(RNG4,Umu);
std::vector<LatticeColourMatrix> U(4,Grid);
for(int mu=0;mu<Nd;mu++){
U[mu] = PeekIndex<LorentzIndex>(Umu,mu);
}
QuasiMinimalResidual<LatticeFermion> QMR(1.0e-8,10000);
RealD mass=0.0;
RealD M5=1.8;
WilsonFermionR Dw(Umu,*Grid,*rbGrid,mass);
NonHermitianLinearOperator<WilsonFermionR,LatticeFermion> NonHermOp(Dw);
QMR(NonHermOp,src,result);
Grid_finalize();
}