Anasazi::StatusTestResNorm< ScalarType, MV, OP > Class Template Reference

A status test for testing the norm of the eigenvectors residuals. More...

#include <AnasaziStatusTestResNorm.hpp>

Inheritance diagram for Anasazi::StatusTestResNorm< ScalarType, MV, OP >:

List of all members.

Public Types
Enums
enum	ResType
	Enumerated type used to specify which residual norm used by this status test. More...
Public Member Functions
Constructors/destructors
	StatusTestResNorm (MagnitudeType tol, int quorum=-1, ResType whichNorm=RES_ORTH, bool scaled=true)
	Constructor.
virtual	~StatusTestResNorm ()
	Destructor.
Status methods
TestStatus	checkStatus (Eigensolver< ScalarType, MV, OP > *solver)
TestStatus	getStatus () const
	Return the result of the most recent checkStatus call.
Accessor methods
void	setQuorum (int quorum)
	Set quorum.
int	getQuorum ()
	Get quorum.
void	setTolerance (MagnitudeType tol)
	Set tolerance. This also resets the test status to Undefined.
MagnitudeType	getTolerance ()
	Get tolerance.
void	setWhichNorm (ResType whichNorm)
	Set the residual norm to be used by the status test.
ResType	getWhichNorm ()
	Return the residual norm used by the status test.
void	setScale (bool relscale)
	Instruct test to scale norms by eigenvalue estimates (relative scale). This also resets the test status to Undefined.
bool	getScale ()
	Returns true if the test scales the norms by the eigenvalue estimates (relative scale).
std::vector< int >	whichVecs ()
	Get the indices for the vectors that passed the test.
int	howMany ()
	Get the number of vectors that passed the test.
Reset methods
void	reset ()
	Informs the status test that it should reset its internal configuration to the uninitialized state.
void	clearStatus ()
	Clears the results of the last status test.
Print methods
ostream &	print (ostream &os, int indent=0) const
	Output formatted description of stopping test to output stream.

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Detailed Description

template<class ScalarType, class MV, class OP>
class Anasazi::StatusTestResNorm< ScalarType, MV, OP >

A status test for testing the norm of the eigenvectors residuals.

Anasazi::StatusTestResNorm was designed to be used as a test for convergence. The tester compares the norms of the residual vectors against a user specified tolerance.

In addition to specifying the tolerance, the user may specify:

• the norm to be used: 2-norm or OrthoManager::norm() or getRitzRes2Norms()
• the scale: absolute or relative to magnitude of Ritz value
• the quorum: the number of vectors required for the test to evaluate as Passed.

Definition at line 63 of file AnasaziStatusTestResNorm.hpp.

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Member Enumeration Documentation

template<class ScalarType, class MV, class OP> enum Anasazi::StatusTestResNorm::ResType

Enumerated type used to specify which residual norm used by this status test. Definition at line 75 of file AnasaziStatusTestResNorm.hpp.

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Constructor & Destructor Documentation

template<class ScalarType, class MV, class OP> Anasazi::StatusTestResNorm< ScalarType, MV, OP >::StatusTestResNorm (  MagnitudeType  tol, int  quorum = -1, ResType  whichNorm = RES_ORTH, bool  scaled = true )

Constructor. Definition at line 211 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> virtual Anasazi::StatusTestResNorm< ScalarType, MV, OP >::~StatusTestResNorm (   )  [inline, virtual]

Destructor. Definition at line 90 of file AnasaziStatusTestResNorm.hpp.

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Member Function Documentation

template<class ScalarType, class MV, class OP> TestStatus Anasazi::StatusTestResNorm< ScalarType, MV, OP >::checkStatus (  Eigensolver< ScalarType, MV, OP > *  solver  )  [virtual]

Check status as defined by test. Returns: TestStatus indicating whether the test passed or failed. Implements Anasazi::StatusTest< ScalarType, MV, OP >. Definition at line 215 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> TestStatus Anasazi::StatusTestResNorm< ScalarType, MV, OP >::getStatus (   )  const [inline, virtual]

Return the result of the most recent checkStatus call. Implements Anasazi::StatusTest< ScalarType, MV, OP >. Definition at line 101 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> void Anasazi::StatusTestResNorm< ScalarType, MV, OP >::setQuorum (  int  quorum  )  [inline]

Set quorum. Setting quorum to -1 signifies that all residuals from the solver must meet the tolerance. This also resets the test status to Undefined. Definition at line 112 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> int Anasazi::StatusTestResNorm< ScalarType, MV, OP >::getQuorum (   )  [inline]

Get quorum. Definition at line 119 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> void Anasazi::StatusTestResNorm< ScalarType, MV, OP >::setTolerance (  MagnitudeType  tol  )  [inline]

Set tolerance. This also resets the test status to Undefined. Definition at line 126 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> MagnitudeType Anasazi::StatusTestResNorm< ScalarType, MV, OP >::getTolerance (   )  [inline]

Get tolerance. Definition at line 132 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> void Anasazi::StatusTestResNorm< ScalarType, MV, OP >::setWhichNorm (  ResType  whichNorm  )  [inline]

Set the residual norm to be used by the status test. This also resets the test status to Undefined. Definition at line 138 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> ResType Anasazi::StatusTestResNorm< ScalarType, MV, OP >::getWhichNorm (   )  [inline]

Return the residual norm used by the status test. Definition at line 144 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> void Anasazi::StatusTestResNorm< ScalarType, MV, OP >::setScale (  bool  relscale  )  [inline]

Instruct test to scale norms by eigenvalue estimates (relative scale). This also resets the test status to Undefined. Definition at line 149 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> bool Anasazi::StatusTestResNorm< ScalarType, MV, OP >::getScale (   )  [inline]

Returns true if the test scales the norms by the eigenvalue estimates (relative scale). Definition at line 155 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> std::vector<int> Anasazi::StatusTestResNorm< ScalarType, MV, OP >::whichVecs (   )  [inline]

Get the indices for the vectors that passed the test. Definition at line 158 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> int Anasazi::StatusTestResNorm< ScalarType, MV, OP >::howMany (   )  [inline]

Get the number of vectors that passed the test. Definition at line 163 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> void Anasazi::StatusTestResNorm< ScalarType, MV, OP >::reset (   )  [inline, virtual]

Informs the status test that it should reset its internal configuration to the uninitialized state. This is necessary for the case when the status test is being reused by another solver or for another eigenvalue problem. The status test may have information that pertains to a particular problem or solver state. The internal information will be reset back to the uninitialized state. The user specified information that the convergence test uses will remain. Implements Anasazi::StatusTest< ScalarType, MV, OP >. Definition at line 177 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> void Anasazi::StatusTestResNorm< ScalarType, MV, OP >::clearStatus (   )  [inline, virtual]

Clears the results of the last status test. This should be distinguished from the reset() method, as it only clears the cached result from the last status test, so that a call to getStatus() will return Undefined. This is necessary for the SEQOR and SEQAND tests in the StatusTestCombo class, which may short circuit and not evaluate all of the StatusTests contained in them. Implements Anasazi::StatusTest< ScalarType, MV, OP >. Definition at line 187 of file AnasaziStatusTestResNorm.hpp.

template<class ScalarType, class MV, class OP> ostream & Anasazi::StatusTestResNorm< ScalarType, MV, OP >::print (  ostream &  os, int  indent = 0 )  const [virtual]

Output formatted description of stopping test to output stream. Implements Anasazi::StatusTest< ScalarType, MV, OP >. Definition at line 270 of file AnasaziStatusTestResNorm.hpp.

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

• AnasaziStatusTestResNorm.hpp

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