Factory for generating a very special nullspace. More...

#include <MueLu_ScaledNullspaceFactory_decl.hpp>

Inheritance diagram for MueLu::ScaledNullspaceFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >:

Constructors/Destructors.
	ScaledNullspaceFactory (const std::string &nspName="Nullspace")
	Constructor. More...

virtual	~ScaledNullspaceFactory ()
	Destructor. More...

Input
RCP< const ParameterList >	GetValidParameterList () const
	Define valid parameters for internal factory parameters. More...

void	DeclareInput (Level &currentLevel) const
	Specifies the data that this class needs, and the factories that generate that data. More...

Build methods.
void	Build (Level &currentLevel) const
	Build an object with this factory. More...

Additional Inherited Members
Public Member Functions inherited from MueLu::SingleLevelFactoryBase
	SingleLevelFactoryBase ()
	Constructor. More...

virtual	~SingleLevelFactoryBase ()
	Destructor. More...

virtual void	CallBuild (Level &requestedLevel) const

virtual void	CallDeclareInput (Level &requestedLevel) const

Public Member Functions inherited from MueLu::Factory
void	EnableMultipleCallCheck () const
	Constructor. More...

void	DisableMultipleCallCheck () const

void	ResetDebugData () const

Public Member Functions inherited from MueLu::FactoryBase
	FactoryBase ()
	Constructor. More...

virtual	~FactoryBase ()
	Destructor. More...

int	GetID () const
	return unique factory id More...

Public Member Functions inherited from MueLu::BaseClass
virtual	~BaseClass ()
	Destructor. More...

Public Member Functions inherited from MueLu::VerboseObject
VerbLevel	GetVerbLevel () const
	Get the verbosity level. More...

void	SetVerbLevel (const VerbLevel verbLevel)
	Set the verbosity level of this object. More...

int	GetProcRankVerbose () const
	Get proc rank used for printing. Do not use this information for any other purpose. More...

int	SetProcRankVerbose (int procRank) const
	Set proc rank used for printing. More...

bool	IsPrint (MsgType type, int thisProcRankOnly=-1) const
	Find out whether we need to print out information for a specific message type. More...

Teuchos::FancyOStream &	GetOStream (MsgType type, int thisProcRankOnly=0) const
	Get an output stream for outputting the input message type. More...

Teuchos::FancyOStream &	GetBlackHole () const

	VerboseObject ()

virtual	~VerboseObject ()
	Destructor. More...

Public Member Functions inherited from Teuchos::VerboseObject< VerboseObject >
	VerboseObject (const EVerbosityLevel verbLevel=VERB_DEFAULT, const RCP< FancyOStream > &oStream=Teuchos::null)

virtual const VerboseObject &	setVerbLevel (const EVerbosityLevel verbLevel) const

virtual const VerboseObject &	setOverridingVerbLevel (const EVerbosityLevel verbLevel) const

virtual EVerbosityLevel	getVerbLevel () const

TEUCHOSPARAMETERLIST_LIB_DLL_EXPORT RCP< const ParameterList >	getValidVerboseObjectSublist ()

TEUCHOSPARAMETERLIST_LIB_DLL_EXPORT void	setupVerboseObjectSublist (ParameterList *paramList)

TEUCHOSPARAMETERLIST_LIB_DLL_EXPORT void	readVerboseObjectSublist (ParameterList paramList, RCP< FancyOStream > oStream, EVerbosityLevel *verbLevel)

void	readVerboseObjectSublist (ParameterList paramList, VerboseObject< ObjectType > verboseObject)

Public Member Functions inherited from Teuchos::VerboseObjectBase
virtual	~VerboseObjectBase ()

	VerboseObjectBase (const RCP< FancyOStream > &oStream=Teuchos::null)

virtual const VerboseObjectBase &	setOStream (const RCP< FancyOStream > &oStream) const

virtual const VerboseObjectBase &	setOverridingOStream (const RCP< FancyOStream > &oStream) const

virtual VerboseObjectBase &	setLinePrefix (const std::string &linePrefix)

virtual RCP< FancyOStream >	getOStream () const

virtual RCP< FancyOStream >	getOverridingOStream () const

virtual std::string	getLinePrefix () const

virtual OSTab	getOSTab (const int tabs=1, const std::string &linePrefix="") const

Public Member Functions inherited from MueLu::Describable
virtual	~Describable ()
	Destructor. More...

virtual std::string	ShortClassName () const
	Return the class name of the object, without template parameters and without namespace. More...

virtual void	describe (Teuchos::FancyOStream &out_arg, const VerbLevel verbLevel=Default) const

virtual std::string	description () const
	Return a simple one-line description of this object. More...

void	describe (Teuchos::FancyOStream &out, const Teuchos::EVerbosityLevel verbLevel=Teuchos::Describable::verbLevel_default) const
	Print the object with some verbosity level to an FancyOStream object. More...

Public Member Functions inherited from Teuchos::Describable
void	describe (std::ostream &out, const EVerbosityLevel verbLevel=verbLevel_default) const

	LabeledObject ()

virtual	~LabeledObject ()

virtual void	setObjectLabel (const std::string &objectLabel)

virtual std::string	getObjectLabel () const

DescribableStreamManipulatorState	describe (const Describable &describable, const EVerbosityLevel verbLevel=Describable::verbLevel_default)

std::ostream &	operator<< (std::ostream &os, const DescribableStreamManipulatorState &d)

Public Member Functions inherited from MueLu::FactoryAcceptor
virtual	~FactoryAcceptor ()

virtual void	SetFactory (const std::string &varName, const RCP< const FactoryBase > &factory)=0
	Configuration. More...

virtual const RCP< const FactoryBase >	GetFactory (const std::string &varName) const =0

Public Member Functions inherited from MueLu::ParameterListAcceptorImpl
	ParameterListAcceptorImpl ()

virtual	~ParameterListAcceptorImpl ()=default

virtual void	SetParameterList (const Teuchos::ParameterList &paramList)
	Set parameters from a parameter list and return with default values. More...

virtual const Teuchos::ParameterList &	GetParameterList () const

void	SetParameter (const std::string &name, const ParameterEntry &entry)
	Set a parameter directly as a ParameterEntry. More...

const ParameterEntry &	GetParameter (const std::string &name) const
	Retrieves a const entry with the name name. More...

virtual void	GetDocumentation (std::ostream &os) const

Public Member Functions inherited from MueLu::ParameterListAcceptor
	ParameterListAcceptor ()

virtual	~ParameterListAcceptor ()=default

Static Public Member Functions inherited from MueLu::Factory
static void	EnableMultipleCheckGlobally ()

static void	DisableMultipleCheckGlobally ()

Static Public Member Functions inherited from MueLu::VerboseObject
static void	SetMueLuOStream (const Teuchos::RCP< Teuchos::FancyOStream > &mueluOStream)

static void	SetMueLuOFileStream (const std::string &filename)

static Teuchos::RCP < Teuchos::FancyOStream >	GetMueLuOStream ()

static void	SetDefaultVerbLevel (const VerbLevel defaultVerbLevel)
	Set the default (global) verbosity level. More...

static VerbLevel	GetDefaultVerbLevel ()
	Get the default (global) verbosity level. More...

Static Public Member Functions inherited from Teuchos::VerboseObject< VerboseObject >
static void	setDefaultVerbLevel (const EVerbosityLevel defaultVerbLevel)

static EVerbosityLevel	getDefaultVerbLevel ()

Static Public Member Functions inherited from Teuchos::VerboseObjectBase
static void	setDefaultOStream (const RCP< FancyOStream > &defaultOStream)

static RCP< FancyOStream >	getDefaultOStream ()

Static Public Attributes inherited from Teuchos::Describable
static const EVerbosityLevel	verbLevel_default

Protected Member Functions inherited from Teuchos::VerboseObject< VerboseObject >
void	initializeVerboseObject (const EVerbosityLevel verbLevel=VERB_DEFAULT, const RCP< FancyOStream > &oStream=Teuchos::null)

Protected Member Functions inherited from Teuchos::VerboseObjectBase
void	initializeVerboseObjectBase (const RCP< FancyOStream > &oStream=Teuchos::null)

virtual void	informUpdatedVerbosityState () const

Detailed Description

template<class Scalar = DefaultScalar, class LocalOrdinal = DefaultLocalOrdinal, class GlobalOrdinal = DefaultGlobalOrdinal, class Node = DefaultNode>
class MueLu::ScaledNullspaceFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >

Factory for generating a very special nullspace.

The ScaledNullspaceFactory is meant to generate a default approximation for the fine level nullspace (Level 0 only). For all other levels it is used to generate a (block-diagonally) scaled version of the Nullspace designed for non-symmetric problems. only to act as "generating factory" for the "Nullspace", which is actually handled by the TentativePFactory.

Constructor:

ScaledNullspaceFactory(const std::string & nspName = "Nullspace")

This constructor uses the variable with the variable nspName on the finest level as null space for the finest multigrid level.

Currently, the only accepted names for the null space vectors are "Nullspace" (default) or, in case of multiphysics problems, "Nullspace1" and "Nullspace2"

Input/output of NullspaceFactory

User parameters of NullspaceFactory

Parameter	type	default	validated	requested	description
Fine level nullspace	string	"Nullspace"	*	*	Name of the variable containing the MultiVector with the near null space vectors on the finest level (level 0) provided by the user.
A	Factory	null	*	*	Generating factory of the matrix A. Note that "A" is only requested, if the user does not provide a fine level null space information and ScaledNullspaceFactory is meant to provide a default set of fine level null space vectors. Then, the information of "A" is used to create constant null space vectors compatible with the row map of A.
Nullspace	Factory	null	*	*	Generating factory of the fine nullspace vectors (of type "MultiVector"). In the default case the same instance of the TentativePFactory is also the generating factory for the null space vectors (on the next coarser levels). Therefore, it is recommended to declare the TentativePFactory to be the generating factory of the "Nullspace" variable globally using the FactoryManager object! For defining the near null space vectors on the finest level one should use the ScaledNullspaceFactory.

The * in the master.xml column denotes that the parameter is defined in the master.xml file.
The * in the validated column means that the parameter is declared in the list of valid input parameters (see ScaledNullspaceFactory::GetValidParameters).
The * in the requested column states that the data is requested as input with all dependencies (see ScaledNullspaceFactory::DeclareInput).

Variables provided by ScaledNullspaceFactory

After ScaledNullspaceFactory::Build the following data is available (if requested)

Parameter	generated by	description
Nullspace	ScaledNullspaceFactory	MultiVector containing the near null space vectors. On the finest level it can be a user-provided set of null space vectors. Otherwise a default set of constant near nullspace vectors is provided. On the coarser levels the null space vectors will be a scaled version of the nullspace generated by the TentativePFactory.

Definition at line 109 of file MueLu_ScaledNullspaceFactory_decl.hpp.

Constructor & Destructor Documentation

template<class Scalar = DefaultScalar, class LocalOrdinal = DefaultLocalOrdinal, class GlobalOrdinal = DefaultGlobalOrdinal, class Node = DefaultNode>

MueLu::ScaledNullspaceFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::ScaledNullspaceFactory ( const std::string & nspName = "Nullspace" )

inline

Constructor.

Definition at line 119 of file MueLu_ScaledNullspaceFactory_decl.hpp.

template<class Scalar = DefaultScalar, class LocalOrdinal = DefaultLocalOrdinal, class GlobalOrdinal = DefaultGlobalOrdinal, class Node = DefaultNode>

virtual MueLu::ScaledNullspaceFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::~ScaledNullspaceFactory ( )

inlinevirtual

Destructor.

Definition at line 124 of file MueLu_ScaledNullspaceFactory_decl.hpp.

Member Function Documentation

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >

RCP< const ParameterList > MueLu::ScaledNullspaceFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::GetValidParameterList ( ) const

virtual

Define valid parameters for internal factory parameters.

Implements MueLu::ParameterListAcceptor.

Definition at line 62 of file MueLu_ScaledNullspaceFactory_def.hpp.

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >

void MueLu::ScaledNullspaceFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::DeclareInput ( Level & currentLevel ) const

virtual

Specifies the data that this class needs, and the factories that generate that data.

If the Build method of this class requires some data, but the generating factory is not specified in DeclareInput, then this class will fall back to the settings in FactoryManager.

Implements MueLu::SingleLevelFactoryBase.

Definition at line 73 of file MueLu_ScaledNullspaceFactory_def.hpp.

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >

void MueLu::ScaledNullspaceFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::Build ( Level & currentLevel ) const