/usr/include/dolfin/la/PETScLUSolver.h is in libdolfin1.0-dev 1.0.0-1.
This file is owned by root:root, with mode 0o644.
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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 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | // Copyright (C) 2005-2011 Anders Logg
//
// 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 Garth N. Wells, 2009-2010.
//
// First added: 2005
// Last changed: 2011-10-19
#ifndef __DOLFIN_PETSC_LU_SOLVER_H
#define __DOLFIN_PETSC_LU_SOLVER_H
#ifdef HAS_PETSC
#include <map>
#include <boost/shared_ptr.hpp>
#include <petscksp.h>
#include <petscpc.h>
#include "GenericLUSolver.h"
#include "PETScObject.h"
namespace dolfin
{
/// Forward declarations
class GenericMatrix;
class GenericVector;
class PETScKrylovMatrix;
class PETScMatrix;
class PETScVector;
/// This class implements the direct solution (LU factorization) for
/// linear systems of the form Ax = b. It is a wrapper for the LU
/// solver of PETSc.
class PETScLUSolver : public GenericLUSolver, public PETScObject
{
public:
/// Constructor
PETScLUSolver(std::string method="default");
/// Constructor
PETScLUSolver(boost::shared_ptr<const PETScMatrix> A,
std::string method="default");
/// Destructor
~PETScLUSolver();
/// Set operator (matrix)
void set_operator(const boost::shared_ptr<const GenericMatrix> A);
/// Set operator (matrix)
void set_operator(const boost::shared_ptr<const PETScMatrix> A);
/// Get operator (matrix)
const GenericMatrix& get_operator() const;
/// Solve linear system Ax = b
uint solve(GenericVector& x, const GenericVector& b);
/// Solve linear system Ax = b
uint solve(const GenericMatrix& A, GenericVector& x, const GenericVector& b);
/// Solve linear system Ax = b
uint solve(const PETScMatrix& A, PETScVector& x, const PETScVector& b);
/// Return informal string representation (pretty-print)
std::string str(bool verbose) const;
/// Return PETSc KSP pointer
boost::shared_ptr<KSP> ksp() const;
/// Return a list of available solver methods
static std::vector<std::pair<std::string, std::string> > methods();
/// Default parameter values
static Parameters default_parameters();
private:
// Available LU solvers
static const std::map<std::string, const MatSolverPackage> _methods;
// Select LU solver type
const MatSolverPackage select_solver(std::string& method) const;
// Initialise solver
void init_solver(std::string& method);
// Set PETSc operators
void set_petsc_operators();
// Print pre-solve report
void pre_report(const PETScMatrix& A) const;
/// PETSc solver pointer
boost::shared_ptr<KSP> _ksp;
// Operator (the matrix)
boost::shared_ptr<const PETScMatrix> A;
};
}
#endif
#endif
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