NOX::Petsc::SharedJacobian Class Reference

Shared Jacobian for NOX::Petsc::Group objects. More...

#include <NOX_Petsc_SharedJacobian.H>

Collaboration diagram for NOX::Petsc::SharedJacobian:

Public Member Functions
	SharedJacobian (Mat &j)
	Constructor.
	SharedJacobian (Mat &j, Mat &p)
	Constructor with separate Matrices for the Jacobian and preconditioner.
	~SharedJacobian ()
	Destructor.
Mat &	getJacobian (const Group *newowner)
	Get a reference to the Jacobian AND take ownership.
const Mat &	getJacobian () const
	Return a const pointer to the Jacobian.
bool	isOwner (const Group *grp) const
	Return true if grp is the owner of the Jacobian.
Mat &	getPrec (const Group *newowner)
	Get a reference to the Jacobian AND take ownership.
const Mat &	getPrec () const
	Return a const pointer to the Jacobian.

Protected Attributes
Mat *	jacobian
	Pointer to Petsc Jacobian matrix.
Mat *	prec
	Pointer to Petsc Preconditioning Matrix.
const Group *	owner
	Pointer to const group that owns Jacobian.

Detailed Description

Shared Jacobian for NOX::Petsc::Group objects.

Due to the size of the Jacobian, we cannot afford to have multiple copies. Instead we implement a shared Jacobian that all groups use.

NOTE: An additional matrix is included with the SharedJacobian in anticipation of having a separate Matrix for the Jacobian and the Preconditioner. This option will be available in the future.

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

• NOX_Petsc_SharedJacobian.H
• NOX_Petsc_SharedJacobian.C