LOCA::Eigensolver::AbstractStrategy Class Reference

Abstract interface class for Eigensolver strategies. More...

#include <LOCA_Eigensolver_AbstractStrategy.H>

Inheritance diagram for LOCA::Eigensolver::AbstractStrategy:

List of all members.

Public Member Functions
	AbstractStrategy ()
	Constructor.
virtual	~AbstractStrategy ()
	Destructor.
virtual NOX::Abstract::Group::ReturnType	computeEigenvalues (NOX::Abstract::Group &group, Teuchos::RCP< std::vector< double > > &evals_r, Teuchos::RCP< std::vector< double > > &evals_i, Teuchos::RCP< NOX::Abstract::MultiVector > &evecs_r, Teuchos::RCP< NOX::Abstract::MultiVector > &evecs_i)=0
	Compute eigenvalues/eigenvectors in group group.

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Detailed Description

Abstract interface class for Eigensolver strategies.

AbstractStrategy defines an abstract interface for eigensolver strategies. It is used by LOCA::Stepper to compute eigenvalues of the steady-state solution after each continuation step.

The interface currently defines one pure virtual method, computeEigenvalues(), to compute the eigenvalues. Derived classes should implement this method for a particular eigensolver strategy. Constructors for derived classes should be of the form:

 class Derived : public AbstractStrategy {
 public:
   Derived(
   const Teuchos::RCP<LOCA::GlobalData>& global_data,
   const Teuchos::RCP<LOCA::Parameter::SublistParser>& topParams,
     const Teuchos::RCP<Teuchos::ParameterList>& eigenParams);
   ...
 };

where global_data is the LOCA global data object, topParams is the parsed top-level parameter list, and eigenParams is a parameter list of eigensolver parameters.

This class and its children follow the Strategy pattern as defined in Erich Gamma, et al. "Design Patterns: Elements of Reusable Object-Oriented Software." Addison Wesley, Boston, MA, 1995.

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Member Function Documentation

virtual NOX::Abstract::Group::ReturnType LOCA::Eigensolver::AbstractStrategy::computeEigenvalues	(	NOX::Abstract::Group &	group,
		Teuchos::RCP< std::vector< double > > &	evals_r,
		Teuchos::RCP< std::vector< double > > &	evals_i,
		Teuchos::RCP< NOX::Abstract::MultiVector > &	evecs_r,
		Teuchos::RCP< NOX::Abstract::MultiVector > &	evecs_i
	)		[pure virtual]

Compute eigenvalues/eigenvectors in group group.

Parameters:

group	[in] NOX Group to compute eigenvalues of
evals_r	[out] Real eigenvalues
evals_i	[out] Imaginary eigenvalues
evecs_r	[out] Real eigenvectors
evecs_i	[out] Imaginary eigenvectors

Returns:

ReturnType code indicating success or failure

Implemented in LOCA::Eigensolver::AnasaziStrategy, LOCA::Eigensolver::DefaultStrategy, and LOCA::Eigensolver::DGGEVStrategy.

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

• LOCA_Eigensolver_AbstractStrategy.H