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. More...

virtual bool	createJacobianTranspose ()
	Evaluates the Jacobian-transpose based on the solution vector x. More...

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. More...

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

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

$v = J^{-T} u,$

where $J$ is the Jacobian, $u$ is the input vector, and $v$ is the result vector.

The parameter list contains the linear solver options.

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.

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.

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