mirror of
https://github.com/paboyle/Grid.git
synced 2025-05-06 02:25:56 +01:00
93 lines
2.6 KiB
C++
93 lines
2.6 KiB
C++
/*************************************************************************************
|
|
|
|
Grid physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: ./lib/algorithms/iterative/SchurRedBlack.h
|
|
|
|
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 */
|
|
#pragma once
|
|
|
|
NAMESPACE_BEGIN(Grid);
|
|
|
|
template<class Field>
|
|
class PauliVillarsSolverUnprec
|
|
{
|
|
public:
|
|
ConjugateGradient<Field> & CG;
|
|
PauliVillarsSolverUnprec( ConjugateGradient<Field> &_CG) : CG(_CG){};
|
|
|
|
template<class Matrix>
|
|
void operator() (Matrix &_Matrix,const Field &src,Field &sol)
|
|
{
|
|
RealD m = _Matrix.Mass();
|
|
Field A (_Matrix.FermionGrid());
|
|
|
|
MdagMLinearOperator<Matrix,Field> HermOp(_Matrix);
|
|
|
|
_Matrix.SetMass(1.0);
|
|
_Matrix.Mdag(src,A);
|
|
CG(HermOp,A,sol);
|
|
_Matrix.SetMass(m);
|
|
};
|
|
};
|
|
|
|
template<class Field,class SchurSolverType>
|
|
class PauliVillarsSolverRBprec
|
|
{
|
|
public:
|
|
SchurSolverType & SchurSolver;
|
|
PauliVillarsSolverRBprec( SchurSolverType &_SchurSolver) : SchurSolver(_SchurSolver){};
|
|
|
|
template<class Matrix>
|
|
void operator() (Matrix &_Matrix,const Field &src,Field &sol)
|
|
{
|
|
RealD m = _Matrix.Mass();
|
|
Field A (_Matrix.FermionGrid());
|
|
|
|
_Matrix.SetMass(1.0);
|
|
SchurSolver(_Matrix,src,sol);
|
|
_Matrix.SetMass(m);
|
|
};
|
|
};
|
|
|
|
template<class Field,class GaugeField>
|
|
class PauliVillarsSolverFourierAccel
|
|
{
|
|
public:
|
|
GaugeField & Umu;
|
|
ConjugateGradient<Field> & CG;
|
|
|
|
PauliVillarsSolverFourierAccel(GaugeField &_Umu,ConjugateGradient<Field> &_CG) : Umu(_Umu), CG(_CG)
|
|
{
|
|
};
|
|
|
|
template<class Matrix>
|
|
void operator() (Matrix &_Matrix,const Field &src,Field &sol)
|
|
{
|
|
FourierAcceleratedPV<Field, Matrix, typename Matrix::GaugeField > faPV(_Matrix,Umu,CG) ;
|
|
faPV.pvInv(src,sol);
|
|
};
|
|
};
|
|
|
|
NAMESPACE_END(Grid);
|