/usr/include/dolfin/la/EpetraKrylovSolver.h is in libdolfin1.0-dev 1.0.0-1.
This file is owned by root:root, with mode 0o644.
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//
// 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/>.
//
// Modified by Anders Logg 2008-2011
// Modified by Garth N. Wells 2009
//
// First added: 2008
// Last changed: 2011-10-19
#ifdef HAS_TRILINOS
#ifndef __EPETRA_KRYLOV_SOLVER_H
#define __EPETRA_KRYLOV_SOLVER_H
#include <map>
#include <string>
#include <boost/shared_ptr.hpp>
#include <dolfin/common/NoDeleter.h>
#include <dolfin/common/types.h>
#include "GenericLinearSolver.h"
// Forward declarations
class AztecOO;
namespace dolfin
{
// Forward declarations
class GenericMatrix;
class GenericVector;
class EpetraMatrix;
class EpetraVector;
class EpetraKrylovMatrix;
class EpetraUserPreconditioner;
class TrilinosPreconditioner;
/// This class implements Krylov methods for linear systems
/// of the form Ax = b. It is a wrapper for the Krylov solvers
/// of Epetra.
class EpetraKrylovSolver : public GenericLinearSolver
{
public:
/// Create Krylov solver for a particular method and preconditioner
EpetraKrylovSolver(std::string method = "default",
std::string preconditioner = "default");
/// Create Krylov solver for a particular method and TrilinosPreconditioner
EpetraKrylovSolver(std::string method, TrilinosPreconditioner& preconditioner);
/// Destructor
~EpetraKrylovSolver();
/// Set the operator (matrix)
void set_operator(const boost::shared_ptr<const GenericMatrix> A);
/// Set the operator (matrix)
void set_operators(const boost::shared_ptr<const GenericMatrix> A,
const boost::shared_ptr<const GenericMatrix> P);
/// Get the operator (matrix)
const GenericMatrix& get_operator() const;
/// Solve linear system Ax = b and return number of iterations
uint solve(GenericVector& x, const GenericVector& b);
/// Solve linear system Ax = b and return number of iterations
uint solve(EpetraVector& x, const EpetraVector& b);
/// Solve linear system Ax = b and return number of iterations
uint solve(const GenericMatrix& A, GenericVector& x, const GenericVector& b);
/// Solve linear system Ax = b and return number of iterations
uint solve(const EpetraMatrix& A, EpetraVector& x, const EpetraVector& b);
/// Return a list of available solver methods
static std::vector<std::pair<std::string, std::string> > methods();
/// Return a list of available preconditioners
static std::vector<std::pair<std::string, std::string> > preconditioners();
/// Default parameter values
static Parameters default_parameters();
/// Return informal string representation (pretty-print)
std::string str(bool verbose) const;
/// Return pointer to Aztec00
boost::shared_ptr<AztecOO> aztecoo() const;
private:
// Solver type
std::string method;
// Available solvers
static const std::map<std::string, int> _methods;
// Underlying solver
boost::shared_ptr<AztecOO> solver;
// Preconditioner
boost::shared_ptr<TrilinosPreconditioner> preconditioner;
// Operator (the matrix)
boost::shared_ptr<const EpetraMatrix> A;
// Matrix used to construct the preconditoner
boost::shared_ptr<const EpetraMatrix> P;
bool preconditioner_set;
};
}
#endif
#endif
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