Thyra_Amesos2LinearOpWithSolve_decl.hpp

Go to the documentation of this file.

// @HEADER
// *****************************************************************************
//         Stratimikos: Thyra-based strategies for linear solvers
//
// Copyright 2006 NTESS and the Stratimikos contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef THYRA_AMESOS2_LINEAR_OP_WITH_SOLVE_DECL_HPP
#define THYRA_AMESOS2_LINEAR_OP_WITH_SOLVE_DECL_HPP

#include "Thyra_LinearOpWithSolveBase.hpp"
#include "Thyra_LinearOpSourceBase.hpp"
#include <Tpetra_Map.hpp>
#include <Tpetra_MultiVector.hpp>
#include <Tpetra_CrsMatrix.hpp>

#include "Thyra_TpetraLinearOp.hpp"
#include "Thyra_TpetraThyraWrappers.hpp"
#include "Thyra_DefaultDiagonalLinearOp.hpp"
#include "Thyra_LinearOpTester.hpp"

#include "Amesos2.hpp"
#include "Amesos2_Version.hpp"
#include "Amesos2_Solver.hpp"

namespace Thyra {

template<typename Scalar>
class Amesos2LinearOpWithSolve: virtual public LinearOpWithSolveBase<Scalar>
{
public:
  using MAT = Tpetra::CrsMatrix<Scalar>;
  using Op = Tpetra::Operator<Scalar>;
  using MV = Tpetra::MultiVector<Scalar>;
  using Solver = ::Amesos2::Solver<MAT, MV>;
  using ConverterT = TpetraOperatorVectorExtraction<Scalar>;


  Amesos2LinearOpWithSolve();

  Amesos2LinearOpWithSolve(
    const Teuchos::RCP<const LinearOpBase<Scalar> > &fwdOp,
    const Teuchos::RCP<const LinearOpSourceBase<Scalar> > &fwdOpSrc,
    const Teuchos::RCP< Solver > &amesos2Solver,
    const EOpTransp amesos2SolverTransp,
    const Scalar amesos2SolverScalar
    );

  void initialize(
    const Teuchos::RCP<const LinearOpBase<Scalar> > &fwdOp,
    const Teuchos::RCP<const LinearOpSourceBase<Scalar> > &fwdOpSrc,
    const Teuchos::RCP< Solver > &amesos2Solver
    );

  Teuchos::RCP<const LinearOpSourceBase<Scalar> > extract_fwdOpSrc();

  Teuchos::RCP<const LinearOpBase<Scalar> > get_fwdOp() const;

  Teuchos::RCP<Solver> get_amesos2Solver();

  Teuchos::RCP<const LinearOpSourceBase<Scalar> > get_fwdOpSrc() const;

  Teuchos::RCP< const VectorSpaceBase<Scalar> > range() const;
  Teuchos::RCP< const VectorSpaceBase<Scalar> > domain() const;
  Teuchos::RCP<const LinearOpBase<Scalar> > clone() const;

  std::string description() const;
  void describe(
    Teuchos::FancyOStream &out,
    const Teuchos::EVerbosityLevel verbLevel
    ) const;

protected:

  virtual bool opSupportedImpl(EOpTransp M_trans) const;
  virtual void applyImpl(
    const EOpTransp M_trans,
    const MultiVectorBase<Scalar> &X,
    const Ptr<MultiVectorBase<Scalar> > &Y,
    const Scalar alpha,
    const Scalar beta
    ) const;

  virtual bool solveSupportsImpl(EOpTransp M_trans) const;
  virtual bool solveSupportsSolveMeasureTypeImpl(
    EOpTransp M_trans, const SolveMeasureType& solveMeasureType
    ) const;
  SolveStatus<Scalar> solveImpl(
    const EOpTransp M_trans,
    const MultiVectorBase<Scalar> &B,
    const Ptr<MultiVectorBase<Scalar> > &X,
    const Ptr<const SolveCriteria<Scalar> > solveCriteria
    ) const;

private:

  Teuchos::RCP<const LinearOpBase<Scalar> > fwdOp_;
  Teuchos::RCP<const LinearOpSourceBase<Scalar> > fwdOpSrc_;
  Teuchos::RCP< Solver > amesos2Solver_;

  void assertInitialized() const;

};

// ///////////////////////////
// Inline members

template<typename Scalar>
inline
Teuchos::RCP<const LinearOpBase<Scalar> >
Amesos2LinearOpWithSolve<Scalar>::get_fwdOp() const
{
  return fwdOp_;
}

template<typename Scalar>
inline
Teuchos::RCP<typename Amesos2LinearOpWithSolve<Scalar>::Solver>
Amesos2LinearOpWithSolve<Scalar>::get_amesos2Solver()
{
  return amesos2Solver_;
}

template<typename Scalar>
inline
Teuchos::RCP<const LinearOpSourceBase<Scalar> >
Amesos2LinearOpWithSolve<Scalar>::get_fwdOpSrc() const
{
  return fwdOpSrc_;
}

} // namespace Thyra

#endif  // THYRA_AMESOS2_LINEAR_OP_WITH_SOLVE_HPP