/usr/include/trilinos/NOX_Epetra_LinearSystem_MPBD.hpp is in libtrilinos-stokhos-dev 12.10.1-3.
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#ifndef NOX_EPETRA_LINEARSYSTEMMPBD_H
#define NOX_EPETRA_LINEARSYSTEMMPBD_H
#include "Stokhos_ConfigDefs.h"
#ifdef HAVE_STOKHOS_NOX
#include "NOX_Common.H"
#include "NOX_Epetra_LinearSystem.H" // base class
#include "NOX_Utils.H" // class data element
#include "Stokhos_ProductContainer.hpp"
#include "Stokhos_VectorOrthogPolyTraitsEpetra.hpp"
#include "Stokhos_BlockDiagonalOperator.hpp"
#include "EpetraExt_BlockVector.h"
namespace NOX {
namespace Epetra {
namespace Interface {
class Required;
class Jacobian;
class Preconditioner;
}
}
}
namespace NOX {
namespace Epetra {
/*!
* \brief Concrete implementation of NOX::Epetra::LinearSolver for
* multi-point block diagonal solves
*/
class LinearSystemMPBD : public virtual NOX::Epetra::LinearSystem {
public:
//! Constructor
LinearSystemMPBD(
Teuchos::ParameterList& printingParams,
Teuchos::ParameterList& linearSolverParams,
const Teuchos::RCP<NOX::Epetra::LinearSystem>& block_solver,
const Teuchos::RCP<NOX::Epetra::Interface::Required>& iReq,
const Teuchos::RCP<NOX::Epetra::Interface::Jacobian>& iJac,
const Teuchos::RCP<Epetra_Operator>& J,
const Teuchos::RCP<const Epetra_Map>& base_map,
const Teuchos::RCP<NOX::Epetra::Scaling> scalingObject =
Teuchos::null);
//! Destructor.
virtual ~LinearSystemMPBD();
/*!
* \brief Applies Jacobian to the given input vector and puts the
* answer in the result.
*/
virtual bool applyJacobian(const NOX::Epetra::Vector& input,
NOX::Epetra::Vector& result) const;
/*!
* \brief Applies Jacobian-Transpose to the given input vector and puts
* the answer in the result.
*/
virtual bool applyJacobianTranspose(const NOX::Epetra::Vector& input,
NOX::Epetra::Vector& result) const;
/*!
* \brief Applies the inverse of the Jacobian matrix to the given
* input vector and puts the answer in result.
*/
virtual bool applyJacobianInverse(Teuchos::ParameterList ¶ms,
const NOX::Epetra::Vector &input,
NOX::Epetra::Vector &result);
//! Returns false
virtual bool applyRightPreconditioning(bool useTranspose,
Teuchos::ParameterList& params,
const NOX::Epetra::Vector& input,
NOX::Epetra::Vector& result) const;
//! Returns supplied scaling object
virtual Teuchos::RCP<NOX::Epetra::Scaling> getScaling();
//! Reset supplied scaling object
virtual void resetScaling(const Teuchos::RCP<NOX::Epetra::Scaling>& s);
//! Evaluates the Jacobian based on the solution vector x.
virtual bool computeJacobian(const NOX::Epetra::Vector& x);
//! Returns false
virtual bool createPreconditioner(const NOX::Epetra::Vector& x,
Teuchos::ParameterList& p,
bool recomputeGraph) const;
//! Returns false
virtual bool destroyPreconditioner() const;
//! Returns false
virtual bool recomputePreconditioner(const NOX::Epetra::Vector& x,
Teuchos::ParameterList& linearSolverParams) const;
//! Returns PRPT_REUSE;
virtual PreconditionerReusePolicyType
getPreconditionerPolicy(bool advanceReuseCounter=true);
//! Returns false
virtual bool isPreconditionerConstructed() const;
//! Returns false
virtual bool hasPreconditioner() const;
//! Returns jacobian operator
virtual Teuchos::RCP<const Epetra_Operator>
getJacobianOperator() const;
//! Returns jacobian operator
virtual Teuchos::RCP<Epetra_Operator> getJacobianOperator();
//! Returns Teuchos::null
virtual Teuchos::RCP<const Epetra_Operator>
getGeneratedPrecOperator() const;
//! Returns Teuchos::null
virtual Teuchos::RCP<Epetra_Operator> getGeneratedPrecOperator();
//! Resets the jacobian operator
virtual void setJacobianOperatorForSolve(const Teuchos::RCP<const Epetra_Operator>& solveJacOp);
//! Does nothing
virtual void setPrecOperatorForSolve(const Teuchos::RCP<const Epetra_Operator>& solvePrecOp);
protected:
enum PREC_STRATEGY {
STANDARD,
MEAN,
ON_THE_FLY
};
//! Pointer to block solver
Teuchos::RCP<NOX::Epetra::LinearSystem> block_solver;
//! Reference to the user supplied Jacobian interface functions
Teuchos::RCP<NOX::Epetra::Interface::Jacobian> jacInterfacePtr;
//! Number of multi-point blocks
int num_mp_blocks;
//! Pointer to the Stokhos block diagonal epetra operator.
mutable Teuchos::RCP<Stokhos::BlockDiagonalOperator> mp_op;
//! Pointer to the block operators
mutable Teuchos::RCP<const Stokhos::ProductContainer<Epetra_Operator> > block_ops;
//! Stores base map
Teuchos::RCP<const Epetra_Map> base_map;
//! Scaling object supplied by the user
Teuchos::RCP<NOX::Epetra::Scaling> scaling;
//! Printing Utilities object
NOX::Utils utils;
PREC_STRATEGY precStrategy;
//! Preconditioner operator for each point
mutable Teuchos::Array< Teuchos::RCP<const Epetra_Operator> > precs;
//! x-vector for on-the-fly preconditioner strategy
mutable Teuchos::RCP<EpetraExt::BlockVector> prec_x;
};
} // namespace Epetra
} // namespace NOX
#endif
#endif
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