Thyra_AztecOOLinearOpWithSolve.hpp

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

#ifndef THYRA_AZTECOO_LINEAR_OP_WITH_SOLVE_HPP
#define THYRA_AZTECOO_LINEAR_OP_WITH_SOLVE_HPP

#include "Thyra_LinearOpWithSolveBase.hpp"
#include "Thyra_LinearOpSourceBase.hpp"
#include "Thyra_EpetraLinearOp.hpp"
#include "Thyra_PreconditionerBase.hpp"
#include "Teuchos_StandardMemberCompositionMacros.hpp"
#include "AztecOO.h"


namespace Thyra {


class AztecOOLinearOpWithSolve : virtual public LinearOpWithSolveBase<double>
{
public:


   AztecOOLinearOpWithSolve(
     const int fwdDefaultMaxIterations = 400,
     const double fwdDefaultTol = 1e-6,
     const int adjDefaultMaxIterations = 400,
     const double adjDefaultTol = 1e-6,
     const bool outputEveryRhs = false
     );

  STANDARD_MEMBER_COMPOSITION_MEMBERS( int, fwdDefaultMaxIterations );
   STANDARD_MEMBER_COMPOSITION_MEMBERS( double, fwdDefaultTol );
  STANDARD_MEMBER_COMPOSITION_MEMBERS( int, adjDefaultMaxIterations );
   STANDARD_MEMBER_COMPOSITION_MEMBERS( double, adjDefaultTol );
   STANDARD_MEMBER_COMPOSITION_MEMBERS( bool, outputEveryRhs );

  void initialize(
    const RCP<const LinearOpBase<double> > &fwdOp,
    const RCP<const LinearOpSourceBase<double> > &fwdOpSrc,
    const RCP<const PreconditionerBase<double> > &prec,
    const bool isExternalPrec,
    const RCP<const LinearOpSourceBase<double> > &approxFwdOpSrc,
    const RCP<AztecOO> &aztecFwdSolver,
    const bool allowInexactFwdSolve = false,
    const RCP<AztecOO> &aztecAdjSolver = Teuchos::null,
    const bool allowInexactAdjSolve = false,
    const double aztecSolverScalar = 1.0
    );
  
  RCP<const LinearOpSourceBase<double> > extract_fwdOpSrc();

  RCP<const PreconditionerBase<double> > extract_prec();

  bool isExternalPrec() const;


  RCP<const LinearOpSourceBase<double> > extract_approxFwdOpSrc();
  
  void uninitialize(
    RCP<const LinearOpBase<double> > *fwdOp = NULL,
    RCP<const LinearOpSourceBase<double> > *fwdOpSrc = NULL,
    RCP<const PreconditionerBase<double> > *prec = NULL,
    bool *isExternalPrec = NULL,
    RCP<const LinearOpSourceBase<double> > *approxFwdOpSrc = NULL,
    RCP<AztecOO> *aztecFwdSolver = NULL,
    bool *allowInexactFwdSolve = NULL,
    RCP<AztecOO> *aztecAdjSolver = NULL,
    bool *allowInexactAdjSolve = NULL,
    double *aztecSolverScalar = NULL
    );


  RCP< const VectorSpaceBase<double> > range() const;
  RCP< const VectorSpaceBase<double> > domain() const;
  RCP<const LinearOpBase<double> > 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<double> &X,
    const Ptr<MultiVectorBase<double> > &Y,
    const double alpha,
    const double beta
    ) const;

  virtual bool solveSupportsImpl(EOpTransp M_trans) const;
  virtual bool solveSupportsSolveMeasureTypeImpl(
    EOpTransp M_trans, const SolveMeasureType& solveMeasureType
    ) const;
  SolveStatus<double> solveImpl(
    const EOpTransp M_trans,
    const MultiVectorBase<double> &B,
    const Ptr<MultiVectorBase<double> > &X,
    const Ptr<const SolveCriteria<double> > solveCriteria
    ) const;
  
private:
  
  RCP<const LinearOpBase<double> > fwdOp_;
  RCP<const LinearOpSourceBase<double> > fwdOpSrc_;
  RCP<const PreconditionerBase<double> > prec_;
  bool isExternalPrec_;
  RCP<const LinearOpSourceBase<double> > approxFwdOpSrc_;
  RCP<AztecOO> aztecFwdSolver_;
  bool allowInexactFwdSolve_;
  RCP<AztecOO> aztecAdjSolver_;
  bool allowInexactAdjSolve_;
  double aztecSolverScalar_;
  
  void assertInitialized() const;

};


} // namespace Thyra

#endif  // THYRA_AZTECOO_LINEAR_OP_WITH_SOLVE_HPP