mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-15 02:05:37 +00:00
127 lines
4.7 KiB
C++
127 lines
4.7 KiB
C++
/*************************************************************************************
|
|
|
|
Grid physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: ./tests/Test_dwf_cg_prec.cc
|
|
|
|
Copyright (C) 2015
|
|
|
|
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
|
|
|
|
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>
|
|
|
|
using namespace std;
|
|
using namespace Grid;
|
|
;
|
|
|
|
template<class d>
|
|
struct scal {
|
|
d internal;
|
|
};
|
|
|
|
Gamma::Algebra Gmu [] = {
|
|
Gamma::Algebra::GammaX,
|
|
Gamma::Algebra::GammaY,
|
|
Gamma::Algebra::GammaZ,
|
|
Gamma::Algebra::GammaT
|
|
};
|
|
|
|
int main (int argc, char ** argv)
|
|
{
|
|
Grid_init(&argc,&argv);
|
|
|
|
std::cout << GridLogMessage << "::::: NB: to enable a quick bit reproducibility check use the --checksums flag. " << std::endl;
|
|
|
|
GridCartesian *FGrid_d = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd, vComplexD::Nsimd()), GridDefaultMpi());
|
|
GridCartesian *FGrid_f = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd, vComplexF::Nsimd()), GridDefaultMpi());
|
|
GridRedBlackCartesian *FrbGrid_d = SpaceTimeGrid::makeFourDimRedBlackGrid(FGrid_d);
|
|
GridRedBlackCartesian *FrbGrid_f = SpaceTimeGrid::makeFourDimRedBlackGrid(FGrid_f);
|
|
|
|
std::vector<int> fSeeds({1, 2, 3, 4});
|
|
GridParallelRNG fPRNG(FGrid_d);
|
|
fPRNG.SeedFixedIntegers(fSeeds);
|
|
|
|
// clang-format off
|
|
LatticeFermionD src(FGrid_d); gaussian(fPRNG, src);
|
|
LatticeFermionD result(FGrid_d); result = Zero();
|
|
LatticeGaugeFieldD Umu_d(FGrid_d); SU3::HotConfiguration(fPRNG, Umu_d);
|
|
LatticeGaugeFieldF Umu_f(FGrid_f); precisionChange(Umu_f, Umu_d);
|
|
// clang-format on
|
|
|
|
RealD mass = -0.1;
|
|
RealD csw_r = 1.0;
|
|
RealD csw_t = 1.0;
|
|
WilsonCloverFermionD Dw_d(Umu_d, *FGrid_d, *FrbGrid_d, mass, csw_r, csw_t);
|
|
WilsonCloverFermionF Dw_f(Umu_f, *FGrid_f, *FrbGrid_f, mass, csw_r, csw_t);
|
|
|
|
LatticeFermionD src_o(FrbGrid_d);
|
|
LatticeFermionD result_o(FrbGrid_d);
|
|
LatticeFermionD result_o_2(FrbGrid_d);
|
|
pickCheckerboard(Odd, src_o, src);
|
|
result_o.Checkerboard() = Odd;
|
|
result_o = Zero();
|
|
result_o_2.Checkerboard() = Odd;
|
|
result_o_2 = Zero();
|
|
|
|
NonHermitianSchurDiagMooeeOperator<WilsonCloverFermionD, LatticeFermionD> NonHermOpEO_d(Dw_d);
|
|
NonHermitianSchurDiagMooeeOperator<WilsonCloverFermionF, LatticeFermionF> NonHermOpEO_f(Dw_f);
|
|
|
|
std::cout << GridLogMessage << "::::::::::::: Starting mixed CG" << std::endl;
|
|
MixedPrecisionBiCGSTAB<LatticeFermionD, LatticeFermionF> mCG(1.0e-8, 10000, 50, FrbGrid_f, NonHermOpEO_f, NonHermOpEO_d);
|
|
mCG(src_o, result_o);
|
|
|
|
std::cout << GridLogMessage << "::::::::::::: Starting regular CG" << std::endl;
|
|
BiCGSTAB<LatticeFermionD> CG(1.0e-8, 10000);
|
|
CG(NonHermOpEO_d, src_o, result_o_2);
|
|
|
|
LatticeFermionD diff_o(FrbGrid_d);
|
|
RealD diff = axpy_norm(diff_o, -1.0, result_o, result_o_2);
|
|
|
|
std::cout << GridLogMessage << "::::::::::::: Diff between mixed and regular CG: " << diff << std::endl;
|
|
|
|
#ifdef HAVE_LIME
|
|
if( GridCmdOptionExists(argv,argv+argc,"--checksums") )
|
|
{
|
|
std::string file1("./Propagator1");
|
|
emptyUserRecord record;
|
|
uint32_t nersc_csum;
|
|
uint32_t scidac_csuma;
|
|
uint32_t scidac_csumb;
|
|
typedef SpinColourVectorD FermionD;
|
|
typedef vSpinColourVectorD vFermionD;
|
|
|
|
BinarySimpleMunger<FermionD,FermionD> munge;
|
|
std::string format = getFormatString<vFermionD>();
|
|
|
|
BinaryIO::writeLatticeObject<vFermionD,FermionD>(result_o,file1,munge, 0, format,
|
|
nersc_csum,scidac_csuma,scidac_csumb);
|
|
|
|
std::cout << GridLogMessage << " Mixed checksums "<<std::hex << scidac_csuma << " "<<scidac_csumb<<std::endl;
|
|
|
|
BinaryIO::writeLatticeObject<vFermionD,FermionD>(result_o_2,file1,munge, 0, format,
|
|
nersc_csum,scidac_csuma,scidac_csumb);
|
|
|
|
std::cout << GridLogMessage << " CG checksums "<<std::hex << scidac_csuma << " "<<scidac_csumb<<std::endl;
|
|
}
|
|
#endif
|
|
|
|
Grid_finalize();
|
|
}
|