mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-10 15:55:37 +00:00
133 lines
4.2 KiB
C++
133 lines
4.2 KiB
C++
/*******************************************************************************
|
|
Grid physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: programs/Hadrons/TRBPrecCG.hpp
|
|
|
|
Copyright (C) 2016
|
|
|
|
Author: Antonin Portelli <antonin.portelli@me.com>
|
|
|
|
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.
|
|
*******************************************************************************/
|
|
|
|
#ifndef Hadrons_RBPrecCG_hpp_
|
|
#define Hadrons_RBPrecCG_hpp_
|
|
|
|
#include <Grid/Hadrons/Global.hpp>
|
|
#include <Grid/Hadrons/Module.hpp>
|
|
#include <Grid/Hadrons/ModuleFactory.hpp>
|
|
|
|
BEGIN_HADRONS_NAMESPACE
|
|
|
|
/******************************************************************************
|
|
* Schur red-black preconditioned CG *
|
|
******************************************************************************/
|
|
BEGIN_MODULE_NAMESPACE(MSolver)
|
|
|
|
class RBPrecCGPar: Serializable
|
|
{
|
|
public:
|
|
GRID_SERIALIZABLE_CLASS_MEMBERS(RBPrecCGPar,
|
|
std::string, action,
|
|
double , residual);
|
|
};
|
|
|
|
template <typename FImpl>
|
|
class TRBPrecCG: public Module<RBPrecCGPar>
|
|
{
|
|
public:
|
|
TYPE_ALIASES(FImpl,);
|
|
public:
|
|
// constructor
|
|
TRBPrecCG(const std::string name);
|
|
// destructor
|
|
virtual ~TRBPrecCG(void) = default;
|
|
// dependencies/products
|
|
virtual std::vector<std::string> getInput(void);
|
|
virtual std::vector<std::string> getOutput(void);
|
|
// setup
|
|
virtual void setup(void);
|
|
// execution
|
|
virtual void execute(void);
|
|
};
|
|
|
|
/******************************************************************************
|
|
* TRBPrecCG template implementation *
|
|
******************************************************************************/
|
|
// constructor /////////////////////////////////////////////////////////////////
|
|
template <typename FImpl>
|
|
TRBPrecCG<FImpl>::TRBPrecCG(const std::string name)
|
|
: Module(name)
|
|
{}
|
|
|
|
// dependencies/products ///////////////////////////////////////////////////////
|
|
template <typename FImpl>
|
|
std::vector<std::string> TRBPrecCG<FImpl>::getInput(void)
|
|
{
|
|
std::vector<std::string> in = {par().action};
|
|
|
|
return in;
|
|
}
|
|
|
|
template <typename FImpl>
|
|
std::vector<std::string> TRBPrecCG<FImpl>::getOutput(void)
|
|
{
|
|
std::vector<std::string> out = {getName()};
|
|
|
|
return out;
|
|
}
|
|
|
|
// setup ///////////////////////////////////////////////////////////////////////
|
|
template <typename FImpl>
|
|
void TRBPrecCG<FImpl>::setup(void)
|
|
{
|
|
auto Ls = env().getObjectLs(par().action);
|
|
|
|
env().registerObject(getName(), 0, Ls);
|
|
env().addOwnership(getName(), par().action);
|
|
}
|
|
|
|
// execution ///////////////////////////////////////////////////////////////////
|
|
template <typename FImpl>
|
|
void TRBPrecCG<FImpl>::execute(void)
|
|
{
|
|
auto &mat = *(env().template getObject<FMat>(par().action));
|
|
auto solver = [&mat, this](FermionField &sol, const FermionField &source)
|
|
{
|
|
ConjugateGradient<FermionField> cg(par().residual, 10000);
|
|
SchurRedBlackDiagMooeeSolve<FermionField> schurSolver(cg);
|
|
|
|
schurSolver(mat, source, sol);
|
|
};
|
|
|
|
LOG(Message) << "setting up Schur red-black preconditioned CG for"
|
|
<< " action '" << par().action << "' with residual "
|
|
<< par().residual << std::endl;
|
|
env().setObject(getName(), new SolverFn(solver));
|
|
}
|
|
|
|
typedef TRBPrecCG<FIMPL> RBPrecCG;
|
|
|
|
END_MODULE_NAMESPACE
|
|
|
|
MODULE_REGISTER_NS(RBPrecCG, MSolver);
|
|
|
|
END_HADRONS_NAMESPACE
|
|
|
|
#endif // Hadrons_RBPrecCG_hpp_
|