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87 lines
3.5 KiB
C++
87 lines
3.5 KiB
C++
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/*
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Copyright 2012 SINTEF ICT, Applied Mathematics.
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OPM_LINEARSOLVERFACTORY_HEADER_INCLUDED
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#define OPM_LINEARSOLVERFACTORY_HEADER_INCLUDED
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#include <opm/core/linalg/LinearSolverInterface.hpp>
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#include <tr1/memory>
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namespace Opm
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{
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namespace parameter { class ParameterGroup; }
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/// Concrete class encapsulating any available linear solver.
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/// For the moment, this means UMFPACK and dune-istl.
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/// Since both are optional dependencies, either or both
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/// may be unavailable, depending on configuration.
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class LinearSolverFactory : public LinearSolverInterface
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{
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public:
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/// Default constructor.
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LinearSolverFactory();
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/// Construct from parameters.
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/// The accepted parameters are (default) (allowed values):
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/// linsolver ("umfpack") ("umfpack", "istl")
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/// For the umfpack solver to be available, this class must be
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/// compiled with UMFPACK support, as indicated by the
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/// variable HAVE_SUITESPARSE_UMFPACK_H in config.h.
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/// For the istl solver to be available, this class must be
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/// compiled with dune-istl support, as indicated by the
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/// variable HAVE_DUNE_ISTL in config.h.
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/// Any further parameters are passed on to the constructors
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/// of the actual solver used, see LinearSolverUmfpack
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/// and LinearSolverIstl for details.
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LinearSolverFactory(const parameter::ParameterGroup& param);
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/// Destructor.
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virtual ~LinearSolverFactory();
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using LinearSolverInterface::solve;
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/// Solve a linear system, with a matrix given in compressed sparse row format.
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/// \param[in] size # of rows in matrix
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/// \param[in] nonzeros # of nonzeros elements in matrix
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/// \param[in] ia array of length (size + 1) containing start and end indices for each row
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/// \param[in] ja array of length nonzeros containing column numbers for the nonzero elements
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/// \param[in] sa array of length nonzeros containing the values of the nonzero elements
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/// \param[in] rhs array of length size containing the right hand side
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/// \param[inout] solution array of length size to which the solution will be written, may also be used
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/// as initial guess by iterative solvers.
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virtual LinearSolverReport solve(const int size,
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const int nonzeros,
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const int* ia,
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const int* ja,
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const double* sa,
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const double* rhs,
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double* solution) const;
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private:
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std::tr1::shared_ptr<LinearSolverInterface> solver_;
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};
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} // namespace Opm
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#endif // OPM_LINEARSOLVERFACTORY_HEADER_INCLUDED
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