Method for solving the transpose of a linear system by transposing the preconditioner and switching to left preconditioning. More...

#include <LOCA_Epetra_TransposeLinearSystem_LeftPreconditioning.H>

Inheritance diagram for LOCA::Epetra::TransposeLinearSystem::LeftPreconditioning:

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Collaboration diagram for LOCA::Epetra::TransposeLinearSystem::LeftPreconditioning:

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List of all members.

Public Member Functions
	LeftPreconditioning (const Teuchos::RCP< LOCA::GlobalData > &global_data, const Teuchos::RCP< Teuchos::ParameterList > &solverParams, const Teuchos::RCP< NOX::Epetra::LinearSystem > &linsys)
	Constructor.
virtual	~LeftPreconditioning ()
	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.
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.

Detailed Description

Method for solving the transpose of a linear system by transposing the preconditioner and switching to left preconditioning.

Member Function Documentation

bool LOCA::Epetra::TransposeLinearSystem::LeftPreconditioning::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.

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

References NOX::Epetra::Vector::getEpetraVector(), and Teuchos::rcp().

bool LOCA::Epetra::TransposeLinearSystem::LeftPreconditioning::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.

bool LOCA::Epetra::TransposeLinearSystem::LeftPreconditioning::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.

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

LOCA_Epetra_TransposeLinearSystem_LeftPreconditioning.H
LOCA_Epetra_TransposeLinearSystem_LeftPreconditioning.C

Public Member Functions

Protected Attributes

Detailed Description

Member Function Documentation