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MueLu::SemiCoarsenPFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node > Class Template Reference

Prolongator factory performing semi-coarsening. More...

#include <MueLu_SemiCoarsenPFactory_decl.hpp>

Inheritance diagram for MueLu::SemiCoarsenPFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >:
MueLu::PFactory MueLu::TwoLevelFactoryBase MueLu::Factory MueLu::FactoryBase MueLu::FactoryAcceptor MueLu::ParameterListAcceptorImpl MueLu::BaseClass MueLu::ParameterListAcceptor MueLu::VerboseObject MueLu::Describable Teuchos::VerboseObject< VerboseObject > Teuchos::Describable Teuchos::VerboseObjectBase Teuchos::LabeledObject

Public Member Functions

RCP< const ParameterListGetValidParameterList () const
 Return a const parameter list of valid parameters that setParameterList() will accept. More...
 
- Public Member Functions inherited from MueLu::PFactory
 PFactory ()
 Constructor. More...
 
virtual ~PFactory ()
 Destructor. More...
 
void setRestrictionMode (bool bRestrictionMode=false)
 
bool isRestrictionModeSet ()
 returns restrictionMode flag More...
 
- Public Member Functions inherited from MueLu::TwoLevelFactoryBase
 TwoLevelFactoryBase ()
 Constructor. More...
 
virtual ~TwoLevelFactoryBase ()
 Destructor. More...
 
virtual void CallDeclareInput (Level &requestedLevel) const
 
virtual void CallBuild (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::FancyOStreamGetOStream (MsgType type, int thisProcRankOnly=0) const
 Get an output stream for outputting the input message type. More...
 
Teuchos::FancyOStreamGetBlackHole () 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 VerboseObjectsetVerbLevel (const EVerbosityLevel verbLevel) const
 
virtual const VerboseObjectsetOverridingVerbLevel (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 VerboseObjectBasesetOStream (const RCP< FancyOStream > &oStream) const
 
virtual const VerboseObjectBasesetOverridingOStream (const RCP< FancyOStream > &oStream) const
 
virtual VerboseObjectBasesetLinePrefix (const std::string &linePrefix)
 
virtual RCP< FancyOStreamgetOStream () const
 
virtual RCP< FancyOStreamgetOverridingOStream () 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 ParameterEntryGetParameter (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
 

Private Member Functions

LO FindCpts (LO const PtsPerLine, LO const CoarsenRate, LO const Thin, LO **LayerCpts) const
 
LO MakeSemiCoarsenP (LO const Ntotal, LO const nz, LO const CoarsenRate, LO const LayerId[], LO const VertLineId[], LO const DofsPerNode, RCP< Matrix > &Amat, RCP< Matrix > &P, RCP< const Map > &coarseMap, const RCP< MultiVector > fineNullspace, RCP< MultiVector > &coarseNullspace, RCP< Matrix > &R, bool buildRestriction, bool doLinear) const
 
void RevertToPieceWiseConstant (RCP< Matrix > &P, LO BlkSize) const
 

Private Attributes

bool bTransferCoordinates_
 

Constructors/Destructors.

 SemiCoarsenPFactory ()
 Constructor. More...
 
virtual ~SemiCoarsenPFactory ()
 Destructor. More...
 
void DeclareInput (Level &fineLevel, Level &coarseLevel) const
 Input. More...
 

Build methods.

void Build (Level &fineLevel, Level &coarseLevel) const
 Build an object with this factory. More...
 
void BuildP (Level &fineLevel, Level &coarseLevel) const
 Abstract Build method. More...
 

Additional Inherited Members

- 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< FancyOStreamgetDefaultOStream ()
 
- 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
 
- Protected Attributes inherited from MueLu::PFactory
bool restrictionMode_
 

Detailed Description

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

Prolongator factory performing semi-coarsening.

The semi-coarsening is performed along user-provided "vertical lines" (in z-direction). The line detection algorithm can be found in the LineDetectionFactory. Usually, the SemiCoarsenPFactory is used together with the TogglePFactory and a second TentativePFactory which allows to dynamically switch from semi-coarsening to aggregation-based coarsening (or any other compatible coarsening algorithm).

Input/output of SemiCoarsenPFactory

User parameters of SemiCoarsenPFactory

Parameter type default master.xml validated requested description
A Factory null * * Generating factory of the matrix A used during the prolongator smoothing process
Nullspace Factory null * * Generating factory of the nullspace. The SemiCoarsenPFactory provides a coarse version of the given Nullspace.
Coordinates Factory NoFactory * * Generating factory for coorindates. The coordinates are expected to be provided on the finest level using the NoFactory mechanism. The coordinates are used to determine the number of z-layers if not otherwise provided by the user.
LineDetection_VertLineIds Factory null * * Generating factory for LineDetection information. Usually provided by the LineDetectionFactory. Array with vertical line ids for all nodes on current processor.
LineDetection_Layers Factory null * * Generating factory for LineDetection information. Usually provided by the LineDetectionFactory. Array with layer id for all nodes on current processor.
CoarseNumZLayers Factory null * * Generating factory for LineDetection information. Usually provided by the LineDetectionFactory. Number of remaining z-layers after semi-coarsening.

| semicoarsen: coarsen rate | int | * | * | | Coarsening rate along vertical lines (2 corresponds to classical semicoarsening. Values > 2 for more aggressive coarsening). |

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 SemiCoarsenPFactory::GetValidParameters).
The * in the requested column states that the data is requested as input with all dependencies (see SemiCoarsenPFactory::DeclareInput).

Variables provided by SemiCoarsenPFactory

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

Parameter generated by description
P SemiCoarsenPFactory Prolongator
Nullspace SemiCoarsenPFactory Coarse nullspace (the fine level nullspace information is coarsened using P to generate a coarse version of the nullspace. No scaling is applied.
NumZLayers NoFactory Number of z layers after coarsening. Necessary input for LineDetectionFactory. Useful input for TogglePFactory.

Definition at line 110 of file MueLu_SemiCoarsenPFactory_decl.hpp.

Constructor & Destructor Documentation

template<class Scalar = DefaultScalar, class LocalOrdinal = DefaultLocalOrdinal, class GlobalOrdinal = DefaultGlobalOrdinal, class Node = DefaultNode>
MueLu::SemiCoarsenPFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::SemiCoarsenPFactory ( )
inline

Constructor.

Definition at line 119 of file MueLu_SemiCoarsenPFactory_decl.hpp.

template<class Scalar = DefaultScalar, class LocalOrdinal = DefaultLocalOrdinal, class GlobalOrdinal = DefaultGlobalOrdinal, class Node = DefaultNode>
virtual MueLu::SemiCoarsenPFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::~SemiCoarsenPFactory ( )
inlinevirtual

Destructor.

Definition at line 123 of file MueLu_SemiCoarsenPFactory_decl.hpp.

Member Function Documentation

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
RCP< const ParameterList > MueLu::SemiCoarsenPFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::GetValidParameterList ( ) const
virtual

Return a const parameter list of valid parameters that setParameterList() will accept.

Also define the default values of parameters according to the input parameter list.

Implements MueLu::ParameterListAcceptor.

Definition at line 68 of file MueLu_SemiCoarsenPFactory_def.hpp.

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
void MueLu::SemiCoarsenPFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::DeclareInput ( Level fineLevel,
Level coarseLevel 
) const
virtual

Input.

Implements MueLu::TwoLevelFactoryBase.

Definition at line 89 of file MueLu_SemiCoarsenPFactory_def.hpp.

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
void MueLu::SemiCoarsenPFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::Build ( Level fineLevel,
Level coarseLevel 
) const
virtual

Build an object with this factory.

Implements MueLu::TwoLevelFactoryBase.

Definition at line 120 of file MueLu_SemiCoarsenPFactory_def.hpp.

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
void MueLu::SemiCoarsenPFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::BuildP ( Level fineLevel,
Level coarseLevel 
) const
virtual

Abstract Build method.

Implements MueLu::PFactory.

Definition at line 125 of file MueLu_SemiCoarsenPFactory_def.hpp.

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
LocalOrdinal MueLu::SemiCoarsenPFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::FindCpts ( LO const  PtsPerLine,
LO const  CoarsenRate,
LO const  Thin,
LO **  LayerCpts 
) const
private

Definition at line 283 of file MueLu_SemiCoarsenPFactory_def.hpp.

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
LocalOrdinal MueLu::SemiCoarsenPFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::MakeSemiCoarsenP ( LO const  Ntotal,
LO const  nz,
LO const  CoarsenRate,
LO const  LayerId[],
LO const  VertLineId[],
LO const  DofsPerNode,
RCP< Matrix > &  Amat,
RCP< Matrix > &  P,
RCP< const Map > &  coarseMap,
const RCP< MultiVector >  fineNullspace,
RCP< MultiVector > &  coarseNullspace,
RCP< Matrix > &  R,
bool  buildRestriction,
bool  doLinear 
) const
private

Definition at line 341 of file MueLu_SemiCoarsenPFactory_def.hpp.

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
void MueLu::SemiCoarsenPFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::RevertToPieceWiseConstant ( RCP< Matrix > &  P,
LO  BlkSize 
) const
private

Definition at line 986 of file MueLu_SemiCoarsenPFactory_def.hpp.

Member Data Documentation

template<class Scalar = DefaultScalar, class LocalOrdinal = DefaultLocalOrdinal, class GlobalOrdinal = DefaultGlobalOrdinal, class Node = DefaultNode>
bool MueLu::SemiCoarsenPFactory< Scalar, LocalOrdinal, GlobalOrdinal, Node >::bTransferCoordinates_
mutableprivate

Definition at line 151 of file MueLu_SemiCoarsenPFactory_decl.hpp.


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