LOCA::Epetra::TransposeLinearSystem::TransposePreconditioner Class Reference

Method for solving the transpose of a linear system by using the transpose of the preconditioner. More...

#include <LOCA_Epetra_TransposeLinearSystem_TransposePreconditioner.H>

Inheritance diagram for LOCA::Epetra::TransposeLinearSystem::TransposePreconditioner:

Collaboration diagram for LOCA::Epetra::TransposeLinearSystem::TransposePreconditioner:

Public Member Functions
	TransposePreconditioner (const Teuchos::RCP< LOCA::GlobalData > &global_data, const Teuchos::RCP< Teuchos::ParameterList > &solverParams, const Teuchos::RCP< NOX::Epetra::LinearSystem > &linsys)
	Constructor.
virtual	~TransposePreconditioner ()
	Destructor.
virtual bool	applyJacobianTransposeInverse (Teuchos::ParameterList &params, const NOX::Epetra::Vector &input, NOX::Epetra::Vector &result)
	Applies the inverse of the Jacobian matrix transpose to the given input vector and puts the answer in result.
virtual bool	createJacobianTranspose ()
	Evaluates the Jacobian-transpose based on the solution vector x.
virtual bool	createTransposePreconditioner (const NOX::Epetra::Vector &x, Teuchos::ParameterList &p)
	Explicitly constructs a preconditioner based on the solution vector x and the parameter list p.
virtual Teuchos::RCP< Epetra_Operator >	getJacobianTransposeOperator ()
	Get Jacobian-transpose operator.
virtual Teuchos::RCP< Epetra_Operator >	getTransposePreconditioner ()
	Get transpose-preconditioner.
virtual void	setJacobianTransposeOperator (const Teuchos::RCP< Epetra_Operator > &new_jac_trans)
	Set Jacobian-transpose operator.
virtual void	setTransposePreconditioner (const Teuchos::RCP< Epetra_Operator > &new_prec_trans)
	Set transpose-preconditioner.
Public Member Functions inherited from LOCA::Epetra::TransposeLinearSystem::AbstractStrategy
	AbstractStrategy ()
	Constructor.
virtual	~AbstractStrategy ()
	Destructor.

Protected Attributes
Teuchos::RCP< LOCA::GlobalData >	globalData
	Global data object.
Teuchos::RCP< NOX::Epetra::LinearSystem >	linsys
	Linear system solver.
Teuchos::RCP< Epetra_Operator >	jac
	Jacobian operator.
Teuchos::RCP< Epetra_Operator >	prec
	Preconditioner.
Teuchos::RCP< NOX::Epetra::Scaling >	scaling_trans
	Scaling object for transpose solve.

Detailed Description

Method for solving the transpose of a linear system by using the transpose of the preconditioner.

Member Function Documentation

applyJacobianTransposeInverse()

bool LOCA::Epetra::TransposeLinearSystem::TransposePreconditioner::applyJacobianTransposeInverse ( Teuchos::ParameterList &  params, const NOX::Epetra::Vector &  input, NOX::Epetra::Vector &  result  )

virtual

Applies the inverse of the Jacobian matrix transpose to the given input vector and puts the answer in result.

Computes

where is the Jacobian, is the input vector, and is the result vector.

The parameter list contains the linear solver options.

Implements LOCA::Epetra::TransposeLinearSystem::AbstractStrategy.

createJacobianTranspose()

bool LOCA::Epetra::TransposeLinearSystem::TransposePreconditioner::createJacobianTranspose ( )

virtual

Evaluates the Jacobian-transpose based on the solution vector x.

Note: For flexibility, this method does not compute the original Jacobian matrix. It uses whatever is currently stored in the linear system.

Implements LOCA::Epetra::TransposeLinearSystem::AbstractStrategy.

createTransposePreconditioner()

bool LOCA::Epetra::TransposeLinearSystem::TransposePreconditioner::createTransposePreconditioner ( const NOX::Epetra::Vector &  x, Teuchos::ParameterList &  p  )

virtual

Explicitly constructs a preconditioner based on the solution vector x and the parameter list p.

Note: x is only needed for user-supplied preconditioners. When using a built-in preconditioner (e.g., Ifpack), x will note be used.

Implements LOCA::Epetra::TransposeLinearSystem::AbstractStrategy.

getJacobianTransposeOperator()

Teuchos::RCP< Epetra_Operator > LOCA::Epetra::TransposeLinearSystem::TransposePreconditioner::getJacobianTransposeOperator ( )

virtual

Get Jacobian-transpose operator.

Implements LOCA::Epetra::TransposeLinearSystem::AbstractStrategy.

getTransposePreconditioner()

Teuchos::RCP< Epetra_Operator > LOCA::Epetra::TransposeLinearSystem::TransposePreconditioner::getTransposePreconditioner ( )

virtual

Get transpose-preconditioner.

Implements LOCA::Epetra::TransposeLinearSystem::AbstractStrategy.

setJacobianTransposeOperator()

void LOCA::Epetra::TransposeLinearSystem::TransposePreconditioner::setJacobianTransposeOperator ( const Teuchos::RCP< Epetra_Operator > &  new_jac_trans )

virtual

Set Jacobian-transpose operator.

Implements LOCA::Epetra::TransposeLinearSystem::AbstractStrategy.

setTransposePreconditioner()

void LOCA::Epetra::TransposeLinearSystem::TransposePreconditioner::setTransposePreconditioner ( const Teuchos::RCP< Epetra_Operator > &  new_prec_trans )

virtual

Set transpose-preconditioner.

Implements LOCA::Epetra::TransposeLinearSystem::AbstractStrategy.

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The documentation for this class was generated from the following files:

• LOCA_Epetra_TransposeLinearSystem_TransposePreconditioner.H
• LOCA_Epetra_TransposeLinearSystem_TransposePreconditioner.C