PETScWrappers::PreconditionLU Class Reference

#include <petsc_precondition.h>

Inheritance diagram for PETScWrappers::PreconditionLU:

Classes
struct	AdditionalData

Public Member Functions
	PreconditionLU ()
	PreconditionLU (const MatrixBase &matrix, const AdditionalData &additional_data=AdditionalData())
void	initialize (const MatrixBase &matrix, const AdditionalData &additional_data=AdditionalData())
Public Member Functions inherited from PETScWrappers::PreconditionerBase
	PreconditionerBase ()
virtual	~PreconditionerBase ()
void	vmult (VectorBase &dst, const VectorBase &src) const
const PC &	get_pc () const

Protected Attributes
AdditionalData	additional_data
Protected Attributes inherited from PETScWrappers::PreconditionerBase
PC	pc
Mat	matrix

Additional Inherited Members
Protected Member Functions inherited from PETScWrappers::PreconditionerBase
void	create_pc ()
	operator Mat () const

Detailed Description

A class that implements the interface to use the PETSc LU preconditioner. The LU decomposition is only implemented for single processor machines. It should provide a convenient interface to another direct solver.

See the comment in the base class PreconditionerBase for when this preconditioner may or may not work.

Author

Oliver Kayser-Herold, 2004

Definition at line 629 of file petsc_precondition.h.

Constructor & Destructor Documentation

PETScWrappers::PreconditionLU::PreconditionLU

(

)

Empty Constructor. You need to call initialize() before using this object.

PETScWrappers::PreconditionLU::PreconditionLU	(	const MatrixBase &	matrix,
		const AdditionalData &	additional_data = AdditionalData()
	)

Constructor. Take the matrix which is used to form the preconditioner, and additional flags if there are any.

Member Function Documentation

void PETScWrappers::PreconditionLU::initialize	(	const MatrixBase &	matrix,
		const AdditionalData &	additional_data = AdditionalData()
	)

Initializes the preconditioner object and calculate all data that is necessary for applying it in a solver. This function is automatically called when calling the constructor with the same arguments and is only used if you create the preconditioner without arguments.

Member Data Documentation

AdditionalData PETScWrappers::PreconditionLU::additional_data

protected

Store a copy of the flags for this particular preconditioner.

Definition at line 709 of file petsc_precondition.h.

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

• include/deal.II/lac/petsc_precondition.h