Handle leftover nodes. Try to avoid singleton nodes

Idea

In phase 3 we try to stick unaggregated nodes into a neighboring aggregate. We try to avoid singletons: we first try to build a new aggregate containing all neighboring non-aggregated nodes. If we cannot build a new aggregate, we add the non-aggregated node to the first adjacent aggregate. Only if there is no adjacent aggregate, we create a singleton node aggregate. More...

#include <MueLu_AggregationPhase3Algorithm_decl.hpp>

Inheritance diagram for MueLu::AggregationPhase3Algorithm< LocalOrdinal, GlobalOrdinal, Node >:

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

Public Member Functions inherited from MueLu::AggregationAlgorithmBase< LocalOrdinal, GlobalOrdinal, Node >
virtual	~AggregationAlgorithmBase ()
	Destructor. 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

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)

Constructors/Destructors.
	AggregationPhase3Algorithm (const RCP< const FactoryBase > &=Teuchos::null)
	Constructor. More...

virtual	~AggregationPhase3Algorithm ()
	Destructor. More...

Aggregation methods.
void	BuildAggregates (const ParameterList &params, const GraphBase &graph, Aggregates &aggregates, std::vector< unsigned > &aggStat, LO &numNonAggregatedNodes) const
	Local aggregation. More...

Additional Inherited Members
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 LocalOrdinal = DefaultLocalOrdinal, class GlobalOrdinal = DefaultGlobalOrdinal, class Node = DefaultNode>
class MueLu::AggregationPhase3Algorithm< LocalOrdinal, GlobalOrdinal, Node >

Handle leftover nodes. Try to avoid singleton nodes

Idea

In phase 3 we try to stick unaggregated nodes into a neighboring aggregate. We try to avoid singletons: we first try to build a new aggregate containing all neighboring non-aggregated nodes. If we cannot build a new aggregate, we add the non-aggregated node to the first adjacent aggregate. Only if there is no adjacent aggregate, we create a singleton node aggregate.

Comments

Only nodes with state READY are changed to AGGREGATED.

Definition at line 78 of file MueLu_AggregationPhase3Algorithm_decl.hpp.

Constructor & Destructor Documentation

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

MueLu::AggregationPhase3Algorithm< LocalOrdinal, GlobalOrdinal, Node >::AggregationPhase3Algorithm ( const RCP< const FactoryBase > & = Teuchos::null )

inline

Constructor.

Definition at line 88 of file MueLu_AggregationPhase3Algorithm_decl.hpp.

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

virtual MueLu::AggregationPhase3Algorithm< LocalOrdinal, GlobalOrdinal, Node >::~AggregationPhase3Algorithm ( )

inlinevirtual

Destructor.

Definition at line 91 of file MueLu_AggregationPhase3Algorithm_decl.hpp.

Member Function Documentation

template<class LocalOrdinal , class GlobalOrdinal , class Node >

void MueLu::AggregationPhase3Algorithm< LocalOrdinal, GlobalOrdinal, Node >::BuildAggregates	(	const ParameterList &	params,
		const GraphBase &	graph,
		Aggregates &	aggregates,
		std::vector< unsigned > &	aggStat,
		LO &	numNonAggregatedNodes
	)		const

virtual

Local aggregation.

Implements MueLu::AggregationAlgorithmBase< LocalOrdinal, GlobalOrdinal, Node >.

Definition at line 66 of file MueLu_AggregationPhase3Algorithm_def.hpp.

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

std::string MueLu::AggregationPhase3Algorithm< LocalOrdinal, GlobalOrdinal, Node >::description ( ) const

inlinevirtual

Return a simple one-line description of this object.

Reimplemented from MueLu::Describable.

Definition at line 104 of file MueLu_AggregationPhase3Algorithm_decl.hpp.

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

Idea

Public Member Functions

Constructors/Destructors.

Aggregation methods.

Additional Inherited Members

Detailed Description

template<class LocalOrdinal = DefaultLocalOrdinal, class GlobalOrdinal = DefaultGlobalOrdinal, class Node = DefaultNode> class MueLu::AggregationPhase3Algorithm< LocalOrdinal, GlobalOrdinal, Node >

Idea

Comments

Constructor & Destructor Documentation

Member Function Documentation

template<class LocalOrdinal = DefaultLocalOrdinal, class GlobalOrdinal = DefaultGlobalOrdinal, class Node = DefaultNode>
class MueLu::AggregationPhase3Algorithm< LocalOrdinal, GlobalOrdinal, Node >