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69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./tests/solver/Test_wilson_fcagmres_prec.cc
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Copyright (C) 2015-2018
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Author: Daniel Richtmann <daniel.richtmann@ur.de>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution
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directory
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*************************************************************************************/
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/* END LEGAL */
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#include <Grid/Grid.h>
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using namespace Grid;
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int main (int argc, char ** argv)
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{
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Grid_init(&argc,&argv);
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Coordinate latt_size = GridDefaultLatt();
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Coordinate simd_layout = GridDefaultSimd(Nd,vComplex::Nsimd());
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Coordinate mpi_layout = GridDefaultMpi();
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GridCartesian Grid(latt_size,simd_layout,mpi_layout);
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GridRedBlackCartesian RBGrid(&Grid);
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std::vector<int> seeds({1,2,3,4});
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GridParallelRNG pRNG(&Grid); pRNG.SeedFixedIntegers(seeds);
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LatticeFermion src(&Grid); random(pRNG,src);
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RealD nrm = norm2(src);
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LatticeFermion result(&Grid); result=Zero();
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LatticeGaugeField Umu(&Grid); SU<Nc>::HotConfiguration(pRNG,Umu);
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double volume=1;
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for(int mu=0;mu<Nd;mu++){
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volume=volume*latt_size[mu];
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}
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RealD mass=0.5;
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WilsonFermionD Dw(Umu,Grid,RBGrid,mass);
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MdagMLinearOperator<WilsonFermionD,LatticeFermion> HermOp(Dw);
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TrivialPrecon<LatticeFermion> simple;
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FlexibleCommunicationAvoidingGeneralisedMinimalResidual<LatticeFermion> FCAGMRES(1.0e-8, 10000, simple, 25);
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FCAGMRES(HermOp,src,result);
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Grid_finalize();
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}
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