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115 lines
4.2 KiB
C++
115 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/istl/solver.hh>
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#include <dune/istl/paamg/pinfo.hh>
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namespace Opm
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{
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class PropertyTree;
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}
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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 Operator>
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class FlexibleSolver : public Dune::InverseOperator<typename Operator::domain_type,
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typename Operator::range_type>
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{
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public:
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using VectorType = typename Operator::domain_type; // Assuming symmetry: domain == range
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/// Base class type of the contained preconditioner.
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using AbstractPrecondType = Dune::PreconditionerWithUpdate<VectorType, VectorType>;
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/// Create a sequential solver.
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FlexibleSolver(Operator& op,
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const Opm::PropertyTree& prm,
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const std::function<VectorType()>& weightsCalculator,
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std::size_t pressureIndex);
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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(Operator& op,
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const Comm& comm,
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const Opm::PropertyTree& prm,
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const std::function<VectorType()>& weightsCalculator,
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std::size_t pressureIndex);
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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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/// 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 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(Operator& op, const Opm::PropertyTree& prm,
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const std::function<VectorType()> weightsCalculator, const Comm& comm,
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std::size_t pressureIndex);
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void initOpPrecSp(Operator& op, const Opm::PropertyTree& prm,
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const std::function<VectorType()> weightsCalculator, const Dune::Amg::SequentialInformation&,
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std::size_t pressureIndex);
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void initSolver(const Opm::PropertyTree& prm, const bool is_iorank);
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void recreateDirectSolver();
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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(Operator& op,
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const Comm& comm,
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const Opm::PropertyTree& prm,
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const std::function<VectorType()> weightsCalculator,
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std::size_t pressureIndex);
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Operator* linearoperator_for_solver_;
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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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bool direct_solver_ = false;
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};
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} // namespace Dune
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//#include <opm/simulators/linalg/FlexibleSolver_impl.hpp>
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#endif // OPM_FLEXIBLE_SOLVER_HEADER_INCLUDED
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