DOLFIN
DOLFIN C++ interface
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LUSolver.h
1// Copyright (C) 2007-2010 Garth N. Wells
2//
3// This file is part of DOLFIN.
4//
5// DOLFIN is free software: you can redistribute it and/or modify
6// it under the terms of the GNU Lesser General Public License as published by
7// the Free Software Foundation, either version 3 of the License, or
8// (at your option) any later version.
9//
10// DOLFIN is distributed in the hope that it will be useful,
11// but WITHOUT ANY WARRANTY; without even the implied warranty of
12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13// GNU Lesser General Public License for more details.
14//
15// You should have received a copy of the GNU Lesser General Public License
16// along with DOLFIN. If not, see <http://www.gnu.org/licenses/>.
17
18#ifndef __LU_SOLVER_H
19#define __LU_SOLVER_H
20
21#include <string>
22#include <memory>
23#include "GenericLinearSolver.h"
24#include <dolfin/common/MPI.h>
25
26namespace dolfin
27{
28
29 // Forward declarations
30 class GenericLinearOperator;
31 class GenericVector;
32
34
36 {
37 public:
38
40 LUSolver(MPI_Comm comm, std::string method= "default");
41
43 LUSolver(std::string method= "default");
44
46 LUSolver(MPI_Comm comm,
47 std::shared_ptr<const GenericLinearOperator> A,
48 std::string method="default");
49
51 LUSolver(std::shared_ptr<const GenericLinearOperator> A,
52 std::string method="default");
53
55 ~LUSolver();
56
58 void set_operator(std::shared_ptr<const GenericLinearOperator> A);
59
61 std::size_t solve(GenericVector& x, const GenericVector& b);
62
64 std::size_t solve(const GenericLinearOperator& A, GenericVector& x,
65 const GenericVector& b);
66
69 {
70 Parameters p("lu_solver");
71 p.add("report", true);
72 p.add("verbose", false);
73 p.add("symmetric", false);
74 return p;
75 }
76
78 std::string parameter_type() const
79 { return "lu_solver"; }
80
84 {
85 this->parameters.update(parameters);
86 solver->parameters.update(parameters);
87 }
88
89 private:
90
91 // Initialize solver
92 void init(MPI_Comm comm, std::string method);
93
94 // Solver
95 std::shared_ptr<GenericLinearSolver> solver;
96
97 };
98}
99
100#endif
Definition GenericLinearOperator.h:43
This class provides a general solver for linear systems Ax = b.
Definition GenericLinearSolver.h:38
This class defines a common interface for vectors.
Definition GenericVector.h:48
LU solver for the built-in LA backends.
Definition LUSolver.h:36
static Parameters default_parameters()
Default parameter values.
Definition LUSolver.h:68
void set_operator(std::shared_ptr< const GenericLinearOperator > A)
Set operator (matrix)
Definition LUSolver.cpp:60
std::string parameter_type() const
Return parameter type: "krylov_solver" or "lu_solver".
Definition LUSolver.h:78
std::size_t solve(GenericVector &x, const GenericVector &b)
Solve linear system Ax = b.
Definition LUSolver.cpp:67
virtual void update_parameters(const Parameters &parameters)
Definition LUSolver.h:83
LUSolver(MPI_Comm comm, std::string method="default")
Constructor.
Definition LUSolver.cpp:28
~LUSolver()
Destructor.
Definition LUSolver.cpp:55
Definition Parameters.h:95
void update(const Parameters &parameters)
Update parameters with another set of parameters.
Definition Parameters.cpp:245
void add(std::string key)
Definition Parameters.h:128
Parameters parameters
Parameters.
Definition Variable.h:74
Definition adapt.h:30