mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-09 23:45:36 +00:00
65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
/*************************************************************************************
|
|
|
|
Grid physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: ./tests/Test_wilson_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;
|
|
using namespace Grid::QCD;
|
|
|
|
int main (int argc, char ** argv)
|
|
{
|
|
Grid_init(&argc,&argv);
|
|
|
|
|
|
std::vector<int> latt_size = GridDefaultLatt();
|
|
std::vector<int> simd_layout = GridDefaultSimd(Nd,vComplex::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({1,2,3,4,5});
|
|
GridParallelRNG pRNG(&Grid); pRNG.SeedFixedIntegers(seeds);
|
|
|
|
LatticeGaugeField Umu(&Grid);
|
|
SU<Nc>::HotConfiguration(pRNG,Umu);
|
|
|
|
typedef SU<Nc>::LatticeAlgebraVector AVector;
|
|
// Source and result in the algebra
|
|
AVector src(&Grid); random(pRNG,src);
|
|
AVector result(&Grid); result=zero;
|
|
|
|
LaplacianAdjointField<PeriodicGimplR> Laplacian(&Grid);
|
|
Laplacian.ImportGauge(Umu);
|
|
|
|
HermitianLinearOperator<LaplacianAdjointField<PeriodicGimplR>,AVector> HermOp(Laplacian);
|
|
ConjugateGradient<AVector> CG(1.0e-8,10000);
|
|
CG(HermOp,src,result);
|
|
|
|
Grid_finalize();
|
|
}
|