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75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/*******************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: programs/Hadrons/SRBPrecCG.cc
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Copyright (C) 2016
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Author: Antonin Portelli <antonin.portelli@me.com>
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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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#include <Hadrons/SRBPrecCG.hpp>
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using namespace Grid;
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using namespace Hadrons;
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/******************************************************************************
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* SRBPrecCG implementation *
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******************************************************************************/
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// constructor /////////////////////////////////////////////////////////////////
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SRBPrecCG::SRBPrecCG(const std::string name)
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: Module(name)
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{}
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// parse parameters
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void SRBPrecCG::parseParameters(XmlReader &reader, const std::string name)
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{
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read(reader, name, par_);
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}
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// dependency relation
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std::vector<std::string> SRBPrecCG::getInput(void)
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{
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return std::vector<std::string>();
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}
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std::vector<std::string> SRBPrecCG::getOutput(void)
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{
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std::vector<std::string> out = {getName()};
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return out;
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}
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// execution ///////////////////////////////////////////////////////////////////
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void SRBPrecCG::execute(Environment &env)
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{
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auto &mat = *(env.getFermionAction(par_.action)->getFMat());
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auto solver = [&mat, this](LatticeFermion &sol,
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const LatticeFermion &source)
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{
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ConjugateGradient<LatticeFermion> cg(par_.residual, 10000);
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SchurRedBlackDiagMooeeSolve<LatticeFermion> schurSolver(cg);
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schurSolver(mat, source, sol);
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};
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env.addSolver(getName(), solver, par_.action);
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}
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