syssolver_linop_cg.cc

Go to the documentation of this file.

/*! \file
 *  \brief Solve a M*psi=chi linear system by CG2
 */
#include "state.h"
#include "actions/ferm/invert/syssolver_linop_factory.h"
#include "actions/ferm/invert/syssolver_linop_aggregate.h"
 
#include "actions/ferm/invert/syssolver_linop_cg.h"
 
namespace Chroma
{
 
  //! CG1 system solver namespace
  namespace LinOpSysSolverCGEnv
  {
    //! Anonymous namespace
    namespace
    {
      //! Name to be used
      const std::string name("CG_INVERTER");
 
      //! Local registration flag
      bool registered = false;
    }
 
 
    //! Callback function
    LinOpSystemSolver<LatticeFermion>* createFerm(XMLReader& xml_in,
                                                  const std::string& path,
                                                  Handle< FermState<
                                                                     LatticeFermion, 
                                                                     multi1d<LatticeColorMatrix>,
                                                                     multi1d<LatticeColorMatrix> 
                                                  > 
                                                          > state, 
 
                                                  Handle< LinearOperator<LatticeFermion> > A)
    {
      return new LinOpSysSolverCG<LatticeFermion>(A, SysSolverCGParams(xml_in, path));
    }
 
    //! Callback function
    LinOpSystemSolver<LatticeFermionF>* createFermF(XMLReader& xml_in,
                                                  const std::string& path,
                                                  Handle< FermState<
                                                                     LatticeFermionF, 
                                                                     multi1d<LatticeColorMatrixF>,
                                                                     multi1d<LatticeColorMatrixF> 
                                                  > 
                                                          > state, 
 
                                                  Handle< LinearOperator<LatticeFermionF> > A)
    {
      return new LinOpSysSolverCG<LatticeFermionF>(A, SysSolverCGParams(xml_in, path));
    }
 
    //! Callback function
    LinOpSystemSolver<LatticeStaggeredFermion>* createStagFerm(XMLReader& xml_in,
                                                               const std::string& path,
                                                               Handle< LinearOperator<LatticeStaggeredFermion> > A)
    {
      return new LinOpSysSolverCG<LatticeStaggeredFermion>(A, SysSolverCGParams(xml_in, path));
    }
 
    //! Register all the factories
    bool registerAll() 
    {
      bool success = true; 
      if (! registered)
      {
        success &= Chroma::TheLinOpFermSystemSolverFactory::Instance().registerObject(name, createFerm);
        success &= Chroma::TheLinOpFFermSystemSolverFactory::Instance().registerObject(name, createFermF);
        success &= Chroma::TheLinOpStagFermSystemSolverFactory::Instance().registerObject(name, createStagFerm);
        registered = true;
      }
      return success;
    }
  }
}