MueLu::AggregationPhase3Algorithm< LocalOrdinal, GlobalOrdinal, Node > Class Template Reference

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...
virtual void	SetupPhase (const ParameterList &params, Teuchos::RCP< const Teuchos::Comm< int >> &comm, LO &numLocalNodes, LO &numNonAggregatedNodes)
virtual void	BuildAggregatesNonKokkos (const Teuchos::ParameterList &params, const LWGraphHostType &graph, Aggregates &aggregates, AggStatHostType &aggStat, LO &numNonAggregatedNodes) const =0
	BuildAggregatesNonKokkos routine. More...
virtual void	BuildAggregates (const Teuchos::ParameterList &params, const LWGraphType &graph, Aggregates &aggregates, AggStatType &aggStat, LO &numNonAggregatedNodes) const =0
	BuildAggregates routine. 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	BuildAggregatesNonKokkos (const ParameterList &params, const LWGraph &graph, Aggregates &aggregates, typename AggregationAlgorithmBase< LocalOrdinal, GlobalOrdinal, Node >::AggStatHostType &aggStat, LO &numNonAggregatedNodes) const
	Local aggregation. More...
void	BuildAggregates (const ParameterList &params, const LWGraph_kokkos &graph, Aggregates &aggregates, typename AggregationAlgorithmBase< LocalOrdinal, GlobalOrdinal, Node >::AggStatType &aggStat, LO &numNonAggregatedNodes) const
void	BuildAggregatesRandom (const ParameterList &params, const LWGraph_kokkos &graph, Aggregates &aggregates, typename AggregationAlgorithmBase< LocalOrdinal, GlobalOrdinal, Node >::AggStatType &aggStat, LO &numNonAggregatedNodes) const

Additional Inherited Members
Public Types inherited from MueLu::AggregationAlgorithmBase< LocalOrdinal, GlobalOrdinal, Node >
using	LWGraphHostType = LWGraph
using	AggStatHostType = Kokkos::View< unsigned *, typename LWGraphHostType::device_type >
using	LWGraphType = LWGraph_kokkos
using	AggStatType = Kokkos::View< unsigned *, typename LWGraphType::device_type >
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 42 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 51 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 54 of file MueLu_AggregationPhase3Algorithm_decl.hpp.

Member Function Documentation

template<class LocalOrdinal , class GlobalOrdinal , class Node >

void MueLu::AggregationPhase3Algorithm< LocalOrdinal, GlobalOrdinal, Node >::BuildAggregatesNonKokkos	(	const ParameterList &	params,
		const LWGraph &	graph,
		Aggregates &	aggregates,
		typename AggregationAlgorithmBase< LocalOrdinal, GlobalOrdinal, Node >::AggStatHostType &	aggStat,
		LO &	numNonAggregatedNodes
	)		const

Local aggregation.

Definition at line 30 of file MueLu_AggregationPhase3Algorithm_def.hpp.

template<class LocalOrdinal , class GlobalOrdinal , class Node >

void MueLu::AggregationPhase3Algorithm< LocalOrdinal, GlobalOrdinal, Node >::BuildAggregates	(	const ParameterList &	params,
		const LWGraph_kokkos &	graph,
		Aggregates &	aggregates,
		typename AggregationAlgorithmBase< LocalOrdinal, GlobalOrdinal, Node >::AggStatType &	aggStat,
		LO &	numNonAggregatedNodes
	)		const

Definition at line 172 of file MueLu_AggregationPhase3Algorithm_def.hpp.

template<class LocalOrdinal , class GlobalOrdinal , class Node >

void MueLu::AggregationPhase3Algorithm< LocalOrdinal, GlobalOrdinal, Node >::BuildAggregatesRandom	(	const ParameterList &	params,
		const LWGraph_kokkos &	graph,
		Aggregates &	aggregates,
		typename AggregationAlgorithmBase< LocalOrdinal, GlobalOrdinal, Node >::AggStatType &	aggStat,
		LO &	numNonAggregatedNodes
	)		const

Definition at line 191 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 78 of file MueLu_AggregationPhase3Algorithm_decl.hpp.

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

• MueLu_AggregationPhase3Algorithm_decl.hpp
• MueLu_AggregationPhase3Algorithm_def.hpp