/usr/include/dolfin/la/TrilinosPreconditioner.h is in libdolfin1.0-dev 1.0.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | // Copyright (C) 2010 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/>.
//
// Modified by Anders Logg 2011
//
// First added: 2010-02-25
// Last changed: 2011-10-19
#ifndef __DOFLIN_TRILINOS_PRECONDITIONER_H
#define __DOFLIN_TRILINOS_PRECONDITIONER_H
#ifdef HAS_TRILINOS
#include <string>
#include <boost/shared_ptr.hpp>
#include <dolfin/common/types.h>
#include <dolfin/common/Variable.h>
#include <dolfin/parameter/Parameters.h>
// Trilinos forward declarations
class Epetra_RowMatrix;
class Ifpack_Preconditioner;
namespace ML_Epetra
{
class MultiLevelPreconditioner;
}
namespace dolfin
{
// Forward declarations
class EpetraKrylovSolver;
class EpetraMatrix;
/// This class is a wrapper for configuring Epetra preconditioners. It does
/// not own a preconditioner. It can take a EpetraKrylovSolver and set the
/// preconditioner type and parameters.
class TrilinosPreconditioner : public Variable
{
public:
/// Create Krylov solver for a particular method and preconditioner
explicit TrilinosPreconditioner(std::string method="default");
/// Destructor
virtual ~TrilinosPreconditioner();
/// Set the precondtioner and matrix used in preconditioner
virtual void set(EpetraKrylovSolver& solver, const EpetraMatrix& P);
/// Return preconditioner name
std::string name() const;
/// Return informal string representation (pretty-print)
std::string str(bool verbose) const;
/// Return a list of available preconditioners
static std::vector<std::pair<std::string, std::string> > preconditioners();
/// Default parameter values
static Parameters default_parameters();
private:
/// Setup the ML precondtioner
void set_ml(AztecOO& solver, const Epetra_RowMatrix& P);
/// Named preconditioner
std::string preconditioner;
// Available named preconditioners
static const std::map<std::string, int> _preconditioners;
boost::shared_ptr<Ifpack_Preconditioner> ifpack_preconditioner;
boost::shared_ptr<ML_Epetra::MultiLevelPreconditioner> ml_preconditioner;
};
}
#endif
#endif
|