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

Interface to Zoltan library. More...

#include <MueLu_ZoltanInterface_decl.hpp>

Inheritance diagram for MueLu::ZoltanInterface< Scalar, LocalOrdinal, GlobalOrdinal, Node >:
MueLu::SingleLevelFactoryBase MueLu::Factory MueLu::FactoryBase MueLu::FactoryAcceptor MueLu::ParameterListAcceptorImpl MueLu::BaseClass MueLu::ParameterListAcceptor MueLu::VerboseObject MueLu::Describable

Constructors/Destructors

 ZoltanInterface ()
 Constructor.
 
virtual ~ZoltanInterface ()
 Destructor.
 
RCP< const ParameterList > GetValidParameterList () const
 Return a const parameter list of valid parameters that setParameterList() will accept.
 

Input

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

Build methods.

void Build (Level &level) const
 Build an object with this factory.
 

Query methods (really functions) required by Zoltan.

static int GetLocalNumberOfRows (void *data, int *ierr)
 
static void GetLocalNumberOfNonzeros (void *data, int NumGidEntries, int NumLidEntries, ZOLTAN_ID_PTR gids, ZOLTAN_ID_PTR lids, int wgtDim, float *weights, int *ierr)
 
static int GetProblemDimension (void *data, int *ierr)
 
static void GetProblemGeometry (void *data, int numGIDEntries, int numLIDEntries, int numObjectIDs, ZOLTAN_ID_PTR gids, ZOLTAN_ID_PTR lids, int dim, double *coordinates, int *ierr)
 
static ArrayRCP< typename Teuchos::ScalarTraits< Scalar >::magnitudeType > coalesceCoordinates (ArrayRCP< typename Teuchos::ScalarTraits< Scalar >::magnitudeType > coord, LocalOrdinal blksize)
 

Additional Inherited Members

- Public Member Functions inherited from MueLu::SingleLevelFactoryBase
 SingleLevelFactoryBase ()
 Constructor.
 
virtual ~SingleLevelFactoryBase ()
 Destructor.
 
virtual void CallBuild (Level &requestedLevel) const
 
virtual void CallDeclareInput (Level &requestedLevel) const
 
- Public Member Functions inherited from MueLu::Factory
 Factory ()
 Constructor.
 
virtual ~Factory ()
 Destructor.
 
virtual void SetFactory (const std::string &varName, const RCP< const FactoryBase > &factory)
 Configuration.
 
const RCP< const FactoryBaseGetFactory (const std::string &varName) const
 Default implementation of FactoryAcceptor::GetFactory()
 
RCP< ParameterList > RemoveFactoriesFromList (const ParameterList &list) const
 
virtual RCP< const ParameterList > GetValidParameterList () const
 Return a const parameter list of valid parameters that setParameterList() will accept.
 
void EnableMultipleCallCheck () const
 
void DisableMultipleCallCheck () const
 
void ResetDebugData () const
 
- Public Member Functions inherited from MueLu::FactoryBase
 FactoryBase ()
 Constructor.
 
virtual ~FactoryBase ()
 Destructor.
 
int GetID () const
 return unique factory id
 
- Public Member Functions inherited from MueLu::BaseClass
virtual ~BaseClass ()
 Destructor.
 
- Public Member Functions inherited from MueLu::VerboseObject
 VerboseObject ()
 
virtual ~VerboseObject ()
 Destructor.
 
VerbLevel GetVerbLevel () const
 Get the verbosity level.
 
void SetVerbLevel (const VerbLevel verbLevel)
 Set the verbosity level of this object.
 
int GetProcRankVerbose () const
 Get proc rank used for printing. Do not use this information for any other purpose.
 
int SetProcRankVerbose (int procRank) const
 Set proc rank used for printing.
 
bool IsPrint (MsgType type, int thisProcRankOnly=-1) const
 Find out whether we need to print out information for a specific message type.
 
Teuchos::FancyOStream & GetOStream (MsgType type, int thisProcRankOnly=0) const
 Get an output stream for outputting the input message type.
 
Teuchos::FancyOStream & GetBlackHole () const
 
- Public Member Functions inherited from MueLu::Describable
virtual ~Describable ()
 Destructor.
 
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.
 
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.
 
virtual std::string ShortClassName () const
 Return the class name of the object, without template parameters and without namespace.
 
- Public Member Functions inherited from MueLu::FactoryAcceptor
virtual ~FactoryAcceptor ()
 
virtual void SetFactory (const std::string &varName, const RCP< const FactoryBase > &factory)=0
 Configuration.
 
virtual const RCP< const FactoryBaseGetFactory (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.
 
virtual const Teuchos::ParameterList & GetParameterList () const
 
void SetParameter (const std::string &name, const ParameterEntry &entry)
 Set a parameter directly as a ParameterEntry.
 
const ParameterEntry & GetParameter (const std::string &name) const
 Retrieves a const entry with the name name.
 
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 EnableTimerSync ()
 
static void DisableTimerSync ()
 
static void EnableMultipleCheckGlobally ()
 
static void DisableMultipleCheckGlobally ()
 
- Static Public Member Functions inherited from MueLu::VerboseObject
static void SetDefaultVerbLevel (const VerbLevel defaultVerbLevel)
 Set the default (global) verbosity level.
 
static VerbLevel GetDefaultVerbLevel ()
 Get the default (global) verbosity level.
 
static void SetMueLuOStream (const Teuchos::RCP< Teuchos::FancyOStream > &mueluOStream)
 
static void SetMueLuOFileStream (const std::string &filename)
 
static Teuchos::RCP< Teuchos::FancyOStream > GetMueLuOStream ()
 
- Protected Member Functions inherited from MueLu::Factory
void Input (Level &level, const std::string &varName) const
 
void Input (Level &level, const std::string &varName, const std::string &varParamName) const
 
template<class T >
Get (Level &level, const std::string &varName) const
 
template<class T >
Get (Level &level, const std::string &varName, const std::string &varParamName) const
 
template<class T >
void Set (Level &level, const std::string &varName, const T &data) const
 
bool IsAvailable (Level &level, const std::string &varName) const
 
- Static Protected Attributes inherited from MueLu::Factory
static bool timerSync_ = false
 

Detailed Description

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

Interface to Zoltan library.

This interface provides access to partitioning methods in Zoltan. Currently, it supports the RCB algorithm only.

Input/output of ZoltanInterface

User parameters of ZoltanInterface

Parameter type default master.xml validated requested description
A Factory null * * Generating factory of the matrix A used during the prolongator smoothing process
Coordinates Factory null * * Factory generating coordinates vector used for rebalancing (RCB algorithm)
number of partitions GO - Short-cut parameter set by RepartitionFactory. Avoid repartitioning algorithms if only one partition is necessary (see details below)

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

Variables provided by ZoltanInterface

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

Parameter generated by description
Partition ZoltanInterface GOVector based on the Row map of A (DOF-based) containing the process id the DOF should be living in after rebalancing/repartitioning

The "Partition" vector is used as input for the RepartitionFactory class. If Re-partitioning/rebalancing is necessary it uses the "Partition" variable to create the corresponding Xpetra::Import object which then is used by the RebalanceFactory classes (e.g., RebalanceAcFactory, RebalanceTransferFactory,...) to rebalance the coarse level operators.

The RepartitionHeuristicFactory calculates how many partitions are to be built when performing rebalancing. It stores the result in the "number of partitions" variable on the current level (type = GO). If it is "number of partitions=1" we skip the Zoltan call and just create an dummy "Partition" vector containing zeros only. If no repartitioning is necessary (i.e., just keep the current partitioning) we return "Partition = Teuchos::null". If "number of partitions" > 1, the algorithm tries to find the requested number of partitions.

Note
: The ZoltanInterface class does not have all the features availabe in the Zoltan2Interface class

Definition at line 115 of file MueLu_ZoltanInterface_decl.hpp.

Constructor & Destructor Documentation

◆ ZoltanInterface()

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

Constructor.

Definition at line 125 of file MueLu_ZoltanInterface_decl.hpp.

◆ ~ZoltanInterface()

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

Destructor.

Definition at line 128 of file MueLu_ZoltanInterface_decl.hpp.

Member Function Documentation

◆ GetValidParameterList()

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
RCP< const ParameterList > MueLu::ZoltanInterface< 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.

Reimplemented from MueLu::Factory.

Definition at line 64 of file MueLu_ZoltanInterface_def.hpp.

◆ DeclareInput()

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
void MueLu::ZoltanInterface< 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 76 of file MueLu_ZoltanInterface_def.hpp.

◆ Build()

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
void MueLu::ZoltanInterface< Scalar, LocalOrdinal, GlobalOrdinal, Node >::Build ( Level currentLevel) const
virtual

Build an object with this factory.

Implements MueLu::SingleLevelFactoryBase.

Definition at line 83 of file MueLu_ZoltanInterface_def.hpp.

◆ GetLocalNumberOfRows()

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
int MueLu::ZoltanInterface< Scalar, LocalOrdinal, GlobalOrdinal, Node >::GetLocalNumberOfRows ( void *  data,
int *  ierr 
)
static

Callback function that returns the local number of objects. Required by Zoltan.

In this case, the number of objects is the number of local rows.

Parameters
data(in) void pointer to an Xpetra::Matrix.
ierr(out) error code.

Definition at line 204 of file MueLu_ZoltanInterface_def.hpp.

◆ GetLocalNumberOfNonzeros()

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
void MueLu::ZoltanInterface< Scalar, LocalOrdinal, GlobalOrdinal, Node >::GetLocalNumberOfNonzeros ( void *  data,
int  NumGidEntries,
int  NumLidEntries,
ZOLTAN_ID_PTR  gids,
ZOLTAN_ID_PTR  lids,
int  wgtDim,
float *  weights,
int *  ierr 
)
static

Callback function that returns the local number of nonzeros in the matrix. Required by Zoltan.

FIXME: Note that this will not work properly for non-point matrices.

Parameters
data(in) void pointer to an Xpetra::Matrix
weights(out) array whose ith entry is the number of nonzeros in local row i.
ierr(out) error code

Definition at line 223 of file MueLu_ZoltanInterface_def.hpp.

◆ GetProblemDimension()

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
int MueLu::ZoltanInterface< Scalar, LocalOrdinal, GlobalOrdinal, Node >::GetProblemDimension ( void *  data,
int *  ierr 
)
static

Callback function that returns the problem dimension. Required by Zoltan.

Parameters
data(in) void pointer to integer dimension
ierr(out) error code

Definition at line 268 of file MueLu_ZoltanInterface_def.hpp.

◆ GetProblemGeometry()

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
void MueLu::ZoltanInterface< Scalar, LocalOrdinal, GlobalOrdinal, Node >::GetProblemGeometry ( void *  data,
int  numGIDEntries,
int  numLIDEntries,
int  numObjectIDs,
ZOLTAN_ID_PTR  gids,
ZOLTAN_ID_PTR  lids,
int  dim,
double *  coordinates,
int *  ierr 
)
static

Callback function that returns the problem dimension. Required by Zoltan.

Parameters
data(in) void pointer to Xpetra::MultiVector.
coordinates(out) array of double coordinates, arranged like so: [x1 y1 z1 x2 y2 z2 ...].
ierr(out) error code

TODO – should I return a view of the coordinates instead of copying them?

Definition at line 282 of file MueLu_ZoltanInterface_def.hpp.

◆ coalesceCoordinates()

template<class Scalar , class LocalOrdinal = DefaultLocalOrdinal, class GlobalOrdinal = DefaultGlobalOrdinal, class Node = DefaultNode>
static ArrayRCP< typename Teuchos::ScalarTraits< Scalar >::magnitudeType > MueLu::ZoltanInterface< Scalar, LocalOrdinal, GlobalOrdinal, Node >::coalesceCoordinates ( ArrayRCP< typename Teuchos::ScalarTraits< Scalar >::magnitudeType >  coord,
LocalOrdinal  blksize 
)
staticprivate

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