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https://github.com/OPM/opm-simulators.git
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108 lines
4.2 KiB
C++
108 lines
4.2 KiB
C++
/*
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Copyright 2019, 2020 SINTEF Digital, Mathematics and Cybernetics.
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Copyright 2020 Equinor.
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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_FLEXIBLE_SOLVER_HEADER_INCLUDED
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#define OPM_FLEXIBLE_SOLVER_HEADER_INCLUDED
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#include <opm/simulators/linalg/PreconditionerWithUpdate.hpp>
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#include <dune/common/fmatrix.hh>
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#include <dune/istl/bcrsmatrix.hh>
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#include <dune/istl/solvers.hh>
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#include <dune/istl/umfpack.hh>
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#include <dune/istl/owneroverlapcopy.hh>
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#include <dune/istl/paamg/pinfo.hh>
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#include <boost/property_tree/ptree.hpp>
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namespace Dune
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{
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/// A solver class that encapsulates all needed objects for a linear solver
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/// (operator, scalar product, iterative solver and preconditioner) and sets
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/// them up based on runtime parameters, using the PreconditionerFactory for
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/// setting up preconditioners.
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template <class MatrixTypeT, class VectorTypeT>
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class FlexibleSolver : public Dune::InverseOperator<VectorTypeT, VectorTypeT>
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{
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public:
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using MatrixType = MatrixTypeT;
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using VectorType = VectorTypeT;
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/// Create a sequential solver.
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FlexibleSolver(const MatrixType& matrix,
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const boost::property_tree::ptree& prm,
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const std::function<VectorTypeT()>& weightsCalculator = std::function<VectorTypeT()>());
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/// Create a parallel solver (if Comm is e.g. OwnerOverlapCommunication).
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template <class Comm>
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FlexibleSolver(const MatrixType& matrix,
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const Comm& comm,
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const boost::property_tree::ptree& prm,
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const std::function<VectorTypeT()>& weightsCalculator = std::function<VectorTypeT()>());
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virtual void apply(VectorType& x, VectorType& rhs, Dune::InverseOperatorResult& res) override;
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virtual void apply(VectorType& x, VectorType& rhs, double reduction, Dune::InverseOperatorResult& res) override;
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/// Type of the contained preconditioner.
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using AbstractPrecondType = Dune::PreconditionerWithUpdate<VectorType, VectorType>;
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/// Access the contained preconditioner.
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AbstractPrecondType& preconditioner();
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virtual Dune::SolverCategory::Category category() const override;
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private:
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using AbstractOperatorType = Dune::AssembledLinearOperator<MatrixType, VectorType, VectorType>;
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using AbstractScalarProductType = Dune::ScalarProduct<VectorType>;
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using AbstractSolverType = Dune::InverseOperator<VectorType, VectorType>;
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// Machinery for making sequential or parallel operators/preconditioners/scalar products.
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template <class Comm>
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void initOpPrecSp(const MatrixType& matrix, const boost::property_tree::ptree& prm,
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const std::function<VectorTypeT()> weightsCalculator, const Comm& comm);
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void initOpPrecSp(const MatrixType& matrix, const boost::property_tree::ptree& prm,
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const std::function<VectorTypeT()> weightsCalculator, const Dune::Amg::SequentialInformation&);
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void initSolver(const boost::property_tree::ptree& prm, bool isMaster);
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// Main initialization routine.
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// Call with Comm == Dune::Amg::SequentialInformation to get a serial solver.
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template <class Comm>
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void init(const MatrixType& matrix,
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const Comm& comm,
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const boost::property_tree::ptree& prm,
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const std::function<VectorTypeT()> weightsCalculator);
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std::shared_ptr<AbstractOperatorType> linearoperator_;
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std::shared_ptr<AbstractPrecondType> preconditioner_;
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std::shared_ptr<AbstractScalarProductType> scalarproduct_;
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std::shared_ptr<AbstractSolverType> linsolver_;
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};
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} // namespace Dune
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#endif // OPM_FLEXIBLE_SOLVER_HEADER_INCLUDED
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