PETScWrappers::PreconditionLU Class Reference

#include <deal.II/lac/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	clear ()
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.

Note

Only works in serial with a PETScWrappers::SparseMatrix.

Author

Oliver Kayser-Herold, 2004

Definition at line 574 of file petsc_precondition.h.

Constructor & Destructor Documentation

PreconditionLU() [1/2]

PreconditionLU< number >::PreconditionLU

(

)

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

Definition at line 735 of file petsc_precondition.cc.

PreconditionLU() [2/2]

PreconditionLU< number >::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.

Definition at line 739 of file petsc_precondition.cc.

Member Function Documentation

initialize()

void PreconditionLU< number >::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.

Definition at line 747 of file petsc_precondition.cc.

Member Data Documentation

additional_data

AdditionalData PETScWrappers::PreconditionLU::additional_data

protected

Store a copy of the flags for this particular preconditioner.

Definition at line 637 of file petsc_precondition.h.

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

• deal.II/lac/petsc_precondition.h
• source/lac/petsc_precondition.cc