NOX pure abstract interface to a "group"; i.e., a solution vector and the corresponding F-vector, Jacobian matrix, gradient vector, and Newton vector. More...

#include <NOX_Multiphysics_Group.H>

Inheritance diagram for NOX::Multiphysics::Group:

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Collaboration diagram for NOX::Multiphysics::Group:

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Public Member Functions
	Group (const Teuchos::RCP< std::vector< Teuchos::RCP< NOX::Solver::Generic > > > &solvers, const Teuchos::RCP< NOX::StatusTest::Generic > &t, const Teuchos::RCP< Teuchos::ParameterList > &p)
	Constructor. More...

	Group (const Group &grp, NOX::CopyType typ)
	Constructor.

virtual	~Group ()
	Destructor.

virtual NOX::Abstract::Group &	operator= (const NOX::Abstract::Group &source)
	Copies the source group into this group. More...

virtual NOX::Abstract::Group &	operator= (const NOX::Multiphysics::Group &source)


virtual void	setX (const NOX::Abstract::Vector &y)
	Set the solution vector x to y. More...

virtual void	computeX (const NOX::Abstract::Group &grp, const NOX::Abstract::Vector &d, double step)
	Compute x = grp.x + step * d. More...

virtual NOX::Abstract::Group::ReturnType	computeF ()
	Compute and store F(x). More...

"Is" functions.
Checks to see if various objects have been computed. Returns true if the corresponding "compute" function has been called since the last change to the solution vector.
virtual bool	isF () const
	Return true if F is valid.

"Get" functions.
Note that these function do not check whether or not the vectors are valid. Must use the "Is" functions for that purpose.
virtual const NOX::Abstract::Vector &	getX () const
	Return solution vector.

virtual const NOX::Abstract::Vector &	getF () const
	Return F(x)

virtual double	getNormF () const
	Return 2-norm of F(x). More...

virtual const NOX::Abstract::Vector &	getGradient () const
	Return gradient.

virtual const NOX::Abstract::Vector &	getNewton () const
	Return Newton direction.

virtual Teuchos::RCP< const NOX::Abstract::Vector >	getXPtr () const
	Return RCP to solution vector.

virtual Teuchos::RCP< const NOX::Abstract::Vector >	getFPtr () const
	Return RCP to F(x)

virtual Teuchos::RCP< const NOX::Abstract::Vector >	getGradientPtr () const
	Return RCP to gradient.

virtual Teuchos::RCP< const NOX::Abstract::Vector >	getNewtonPtr () const
	Return RCP to Newton direction.

virtual Teuchos::RCP < NOX::Abstract::Group >	clone (NOX::CopyType type=NOX::DeepCopy) const
	Create a new Group of the same derived type as this one by cloning this one, and return a ref count pointer to the new group. More...

Public Member Functions inherited from NOX::Abstract::Group
	Group ()
	Constructor. More...

virtual NOX::Abstract::Group::ReturnType	computeJacobian ()
	Compute and store Jacobian. More...

virtual NOX::Abstract::Group::ReturnType	computeGradient ()
	Compute and store gradient. More...

virtual NOX::Abstract::Group::ReturnType	computeNewton (Teuchos::ParameterList &params)
	Compute the Newton direction, using parameters for the linear solve. More...

virtual NOX::Abstract::Group::ReturnType	applyJacobian (const NOX::Abstract::Vector &input, NOX::Abstract::Vector &result) const
	Applies Jacobian to the given input vector and puts the answer in the result. More...

virtual NOX::Abstract::Group::ReturnType	applyJacobianTranspose (const NOX::Abstract::Vector &input, NOX::Abstract::Vector &result) const
	Applies Jacobian-Transpose to the given input vector and puts the answer in the result. More...

virtual NOX::Abstract::Group::ReturnType	applyJacobianInverse (Teuchos::ParameterList &params, const NOX::Abstract::Vector &input, NOX::Abstract::Vector &result) const
	Applies the inverse of the Jacobian matrix to the given input vector and puts the answer in result. More...

virtual NOX::Abstract::Group::ReturnType	applyRightPreconditioning (bool useTranspose, Teuchos::ParameterList &params, const NOX::Abstract::Vector &input, NOX::Abstract::Vector &result) const
	Apply right preconditiong to the given input vector. More...

virtual NOX::Abstract::Group::ReturnType	applyJacobianMultiVector (const NOX::Abstract::MultiVector &input, NOX::Abstract::MultiVector &result) const
	applyJacobian for multiple right-hand sides More...

virtual NOX::Abstract::Group::ReturnType	applyJacobianTransposeMultiVector (const NOX::Abstract::MultiVector &input, NOX::Abstract::MultiVector &result) const
	applyJacobianTranspose for multiple right-hand sides More...

virtual NOX::Abstract::Group::ReturnType	applyJacobianInverseMultiVector (Teuchos::ParameterList &params, const NOX::Abstract::MultiVector &input, NOX::Abstract::MultiVector &result) const
	applyJacobianInverse for multiple right-hand sides More...

virtual NOX::Abstract::Group::ReturnType	applyRightPreconditioningMultiVector (bool useTranspose, Teuchos::ParameterList &params, const NOX::Abstract::MultiVector &input, NOX::Abstract::MultiVector &result) const
	applyRightPreconditioning for multiple right-hand sides More...

virtual bool	isJacobian () const
	Return true if the Jacobian is valid. More...

virtual bool	isGradient () const
	Return true if the gradient is valid. More...

virtual bool	isNewton () const
	Return true if the Newton direction is valid. More...

virtual const NOX::Abstract::Vector &	getScaledX () const

virtual void	logLastLinearSolveStats (NOX::SolverStats &stats) const
	Adds statistics from last linear solve to the SovlerStats object.

virtual NOX::Abstract::Group::ReturnType	getNormLastLinearSolveResidual (double &residual) const
	Return the norm of the last linear solve residual as the result of either a call to computeNewton() or applyJacobianInverse(). More...

Protected Member Functions
virtual void	resetIsValid ()
	resets the isValid flags to false

Protected Attributes
Teuchos::RCP< std::vector < Teuchos::RCP < NOX::Solver::Generic > > >	solversVecPtr
	Pointer to the container of solvers for each problem to be coupled.

IsValid flags
True if the current solution is up-to-date with respect to the currect xVector.
bool	isValidRHS

double	normRHS
	2-Norm of RHS

Additional Inherited Members
Public Types inherited from NOX::Abstract::Group
enum	ReturnType { Ok, NotDefined, BadDependency, NotConverged, Failed }
	The computation of, say, the Newton direction in computeNewton() may fail in many different ways, so we have included a variety of return codes to describe the failures. Of course, we also have a code for success. More...

Detailed Description

NOX pure abstract interface to a "group"; i.e., a solution vector and the corresponding F-vector, Jacobian matrix, gradient vector, and Newton vector.

This class is a member of the namespace NOX::Abstract.

The user should implement their own concrete implementation of this class or use one of the implementations provided by us. Typically the implementation is also tied to a particular NOX::Abstract::Vector implementation.

Note: The group may be implemented so that multiple groups can share underlying memory space. This is particularly important when it comes to the Jacobian, which is often to big to be replicated for every group. Thus, we have included instructions on how shared data should be treated for the operator=() and clone() functions.

Constructor & Destructor Documentation

NOX::Multiphysics::Group::Group	(	const Teuchos::RCP< std::vector< Teuchos::RCP< NOX::Solver::Generic > > > &	solvers,
		const Teuchos::RCP< NOX::StatusTest::Generic > &	t,
		const Teuchos::RCP< Teuchos::ParameterList > &	p
	)

Constructor.

Note: Constructors for any derived object should always define a default x-value so that getX() is always defined.

References getX(), and resetIsValid().

Member Function Documentation

Teuchos::RCP< NOX::Abstract::Group > NOX::Multiphysics::Group::clone ( NOX::CopyType type = NOX::DeepCopy ) const

virtual

Create a new Group of the same derived type as this one by cloning this one, and return a ref count pointer to the new group.

If type is NOX::DeepCopy, then we need to create an exact replica of "this". Otherwise, if type is NOX::ShapeCopy, we need only replicate the shape of "this" (only the memory is allocated, the values are not copied into the vectors and Jacobian). Returns NULL if clone is not supported.

Note: Any shared data should have its ownership transfered to this group from the source for a NOX::DeepCopy.

Implements NOX::Abstract::Group.

References Teuchos::rcp().

NOX::Abstract::Group::ReturnType NOX::Multiphysics::Group::computeF ( )

virtual

Compute and store F(x).

Note: It's generally useful to also compute and store the 2-norm of F(x) at this point for later access by the getNormF() function.

Returns

NOX::Abstract::Group::Failed - If the computation fails in any way
NOX::Abstract::Group::Ok - Otherwise

Implements NOX::Abstract::Group.

References NOX::Abstract::Group::getNormF(), and NOX::Abstract::Group::Ok.

void NOX::Multiphysics::Group::computeX	(	const NOX::Abstract::Group &	grp,
		const NOX::Abstract::Vector &	d,
		double	step
	)

virtual

Compute x = grp.x + step * d.

Let $x$ denote this group's solution vector. Let $\hat x$ denote the result of grp.getX(). Then set

$x = \hat x + \mbox{step} \; d.$

Note: This should invalidate the function value, Jacobian, gradient, and Newton direction.; Throw an error if the copy fails.

Returns: Reference to this object

Implements NOX::Abstract::Group.

double NOX::Multiphysics::Group::getNormF ( ) const

virtual

Return 2-norm of F(x).

In other words,

$\sqrt{\sum_{i=1}^n F_i^2}$

Implements NOX::Abstract::Group.

NOX::Abstract::Group & NOX::Multiphysics::Group::operator= ( const NOX::Abstract::Group & source )

virtual

Copies the source group into this group.

Note: Any shared data owned by the source should have its ownership transfered to this group. This may result in a secret modification to the source object.

Implements NOX::Abstract::Group.

void NOX::Multiphysics::Group::setX ( const NOX::Abstract::Vector & y )

virtual

Set the solution vector x to y.

Note: This should invalidate the function value, Jacobian, gradient, and Newton direction.; Throw an error if the copy fails.

Returns: Reference to this object

Implements NOX::Abstract::Group.

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

NOX_Multiphysics_Group.H
NOX_Multiphysics_Group.C

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation