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KrylovSolver.h
// Copyright (C) 2007-2009 Garth N. Wells
//
// This file is part of DOLFIN.
//
// DOLFIN is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// DOLFIN 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with DOLFIN. If not, see <http://www.gnu.org/licenses/>.
#ifndef __KRYLOV_SOLVER_H
#define __KRYLOV_SOLVER_H
#include <string>
#include <vector>
#include <memory>
#include "GenericLinearSolver.h"
#include <dolfin/common/MPI.h>
namespace dolfin
{
class GenericLinearOperator;
class GenericVector;
class VectorSpaceBasis;
class KrylovSolver : public GenericLinearSolver
{
public:
KrylovSolver(MPI_Comm comm,
std::string method="default",
std::string preconditioner="default");
KrylovSolver(std::string method="default",
std::string preconditioner="default");
KrylovSolver(MPI_Comm comm,
std::shared_ptr<const GenericLinearOperator> A,
std::string method="default",
std::string preconditioner="default");
KrylovSolver(std::shared_ptr<const GenericLinearOperator> A,
std::string method="default",
std::string preconditioner="default");
~KrylovSolver();
void set_operator(std::shared_ptr<const GenericLinearOperator> A);
void set_operators(std::shared_ptr<const GenericLinearOperator> A,
std::shared_ptr<const GenericLinearOperator> P);
std::size_t solve(GenericVector& x, const GenericVector& b);
std::size_t solve(const GenericLinearOperator& A,
GenericVector& x, const GenericVector& b);
static Parameters default_parameters();
virtual void update_parameters(const Parameters& parameters)
{
this->parameters.update(parameters);
solver->parameters.update(parameters);
}
// FIXME: This should not be needed. Need to cleanup linear solver
// name jungle: default, lu, iterative, direct, krylov, etc /
// Return parameter type: "krylov_solver" or "lu_solver"
std::string parameter_type() const
{
return "krylov_solver";
}
private:
// Initialize solver
void init(std::string method, std::string preconditioner, MPI_Comm comm);
// Solver
std::shared_ptr<GenericLinearSolver> solver;
};
}
#endif
dolfin::GenericLinearOperator
Definition GenericLinearOperator.h:43
dolfin::GenericLinearSolver
This class provides a general solver for linear systems Ax = b.
Definition GenericLinearSolver.h:38
dolfin::GenericVector
This class defines a common interface for vectors.
Definition GenericVector.h:48
dolfin::KrylovSolver::solve
std::size_t solve(GenericVector &x, const GenericVector &b)
Solve linear system Ax = b.
Definition KrylovSolver.cpp:101
dolfin::KrylovSolver::~KrylovSolver
~KrylovSolver()
Destructor.
Definition KrylovSolver.cpp:79
dolfin::KrylovSolver::parameter_type
std::string parameter_type() const
Return parameter type: "krylov_solver" or "lu_solver".
Definition KrylovSolver.h:93
dolfin::KrylovSolver::set_operators
void set_operators(std::shared_ptr< const GenericLinearOperator > A, std::shared_ptr< const GenericLinearOperator > P)
Set operator (matrix) and preconditioner matrix.
Definition KrylovSolver.cpp:93
dolfin::KrylovSolver::set_operator
void set_operator(std::shared_ptr< const GenericLinearOperator > A)
Set operator (matrix).
Definition KrylovSolver.cpp:85
dolfin::KrylovSolver::KrylovSolver
KrylovSolver(MPI_Comm comm, std::string method="default", std::string preconditioner="default")
Constructor.
Definition KrylovSolver.cpp:48
dolfin::KrylovSolver::update_parameters
virtual void update_parameters(const Parameters &parameters)
Definition KrylovSolver.h:84
dolfin::KrylovSolver::default_parameters
static Parameters default_parameters()
Default parameter values.
Definition KrylovSolver.cpp:32
dolfin::Parameters
Definition Parameters.h:95
dolfin::Parameters::update
void update(const Parameters &parameters)
Update parameters with another set of parameters.
Definition Parameters.cpp:245
dolfin::Variable::parameters
Parameters parameters
Parameters.
Definition Variable.h:74
dolfin::VectorSpaceBasis
Definition VectorSpaceBasis.h:34
dolfin
Definition adapt.h:30
dolfin::init
void init(int argc, char *argv[])
Definition init.cpp:27