Interface (abstract base class) for an operator that computes a partitioning of local elements into levels. More...

#include <Isorropia_LevelScheduler.hpp>

Inheritance diagram for Isorropia::LevelScheduler:

Collaboration diagram for Isorropia::LevelScheduler:

Public Member Functions
virtual	~LevelScheduler ()
	Destructor. More...

virtual void	schedule (bool forceScheduling=false)=0
	Method which does the work of computing a new level schedule. More...

virtual int	numLevels () const
	Method which returns the number of levels. More...

virtual int	numElemsWithLevel (int level) const
	Return the number of elements in a given level. More...

virtual void	elemsWithLevel (int level, int *elementList, int len) const
	Fill user-allocated list (of length len) with the local ID for each element in the given level. More...

virtual void	setParameters (const Teuchos::ParameterList &paramlist)=0
	Set parameters for the Operator instance. More...

virtual void	compute (bool forceRecomputing=false)=0
	Method which does the work of computing a new partitioning/coloring/ordering, depending on the child class used. More...


virtual bool	alreadyComputed () const =0
	Query whether the computation has already been called. More...

virtual int	numProperties () const =0
	Return the number of different values used for "properties". More...

virtual int	numLocalProperties () const =0
	Return the number of different values used for "properties" for this process only. More...

virtual const int &	operator[] (int myElem) const =0
	Return the "property" for a given element that resided locally. More...

virtual int	numElemsWithProperty (int property) const =0
	Return the number of LOCAL elements with the given property. More...

virtual void	elemsWithProperty (int property, int *elementList, int len) const =0
	Fill user-allocated list (of length len) with the local element ids of the LOCAL elements with the given property. More...

virtual int	extractPropertiesView (int &size, const int *&array) const =0
	Give access of the property array that is owned by the current processor. More...

virtual int	extractPropertiesCopy (int len, int &size, int *array) const =0
	Copy a part of the property array. More...

Detailed Description

Interface (abstract base class) for an operator that computes a partitioning of local elements into levels.

On each process the levels begin at 1 and increase by 1. All elements in the same level can be used in calculation concurrently. All elements in level i are dependent upon the completion of the calculations involving the elements in level i-1.

Constructor & Destructor Documentation

virtual Isorropia::LevelScheduler::~LevelScheduler ( )

inlinevirtual

Destructor.

Reimplemented in Isorropia::Epetra::LevelScheduler.

Member Function Documentation

virtual void Isorropia::LevelScheduler::schedule ( bool forceScheduling = false )

pure virtual

Method which does the work of computing a new level schedule.

Parameters

forceScheduling Optional argument defaults to false. Depending on the implementation, schedule() should only perform a scheduling the first time it is called, and subsequent repeated calls are no-ops. If the user's intent is to re-compute the scheduling (e.g., if parameters or other inputs have been changed), then setting this flag to true will force a new scheduling to be computed.

Implemented in Isorropia::Epetra::LevelScheduler.

virtual int Isorropia::LevelScheduler::numLevels ( ) const

inlinevirtual

Method which returns the number of levels.

Returns: The number of levels on the local process. Levels begin at 1 and increase by 1.

See Also: Isorropia::Operator::numProperties()

virtual int Isorropia::LevelScheduler::numElemsWithLevel ( int level ) const

inlinevirtual

Return the number of elements in a given level.

Parameters

level The wanted level.

Returns: The number of elements in the level.

See Also: Isorropia::Operator::numElemsWithProperty()

virtual void Isorropia::LevelScheduler::elemsWithLevel	(	int	level,
		int *	elementList,
		int	len
	)		const

inlinevirtual

Fill user-allocated list (of length len) with the local ID for each element in the given level.

Parameters

level	the wanted level
elementList	an array to receive local elements of the given level
len	the number of elements wanted

See Also: Isorropia::Operator::elemsWithProperty()

virtual void Isorropia::Operator::setParameters ( const Teuchos::ParameterList & paramlist )

pure virtualinherited

Set parameters for the Operator instance.

The contents of the input paramlist object are copied into an internal ParameterList attribute. Instances of this interface should not retain a reference to the input ParameterList after this method returns.

Parameters

paramlist [in] List of parameters that the user wants to use.

Implemented in Isorropia::Epetra::Operator.

virtual void Isorropia::Operator::compute ( bool forceRecomputing = false )

pure virtualinherited

Method which does the work of computing a new partitioning/coloring/ordering, depending on the child class used.

Parameters

forceRecomputing Optional argument defaults to false. Depending on the implementation, compute() should only perform a computation the first time it is called, and subsequent repeated calls are no-ops. If the user's intent is to re-compute the results (e.g., if parameters or other inputs have been changed), then setting this flag to true will force a new result to be computed.

Implemented in Isorropia::Epetra::Operator, Isorropia::Epetra::Partitioner, Isorropia::Epetra::Colorer, Isorropia::Epetra::Partitioner2D, Isorropia::Epetra::Orderer, and Isorropia::Epetra::LevelScheduler.

virtual bool Isorropia::Operator::alreadyComputed ( ) const

pure virtualinherited

Query whether the computation has already been called.

Returns: True if the computation has already been done, False otherwise.

Implemented in Isorropia::Epetra::Operator.

virtual int Isorropia::Operator::numProperties ( ) const

pure virtualinherited

Return the number of different values used for "properties".

For example, the number of colors or the number of parts used for the overall graph/matrix.

Returns: Global number of values for properties

Remarks: Infact, it returns the upper bound of the interval of taken values. For example, for the colors "1,2,4" , it will return "4"

Implemented in Isorropia::Epetra::Operator.

virtual int Isorropia::Operator::numLocalProperties ( ) const

pure virtualinherited

Return the number of different values used for "properties" for this process only.

Returns: Local number of values for properties

Implemented in Isorropia::Epetra::Operator.

virtual const int& Isorropia::Operator::operator[] ( int myElem ) const

pure virtualinherited

Return the "property" for a given element that resided locally.

Parameters

myElem [in] the local ID of the element we want to know the property.

Returns: property associated to the local element.

Implemented in Isorropia::Epetra::Operator.

virtual int Isorropia::Operator::numElemsWithProperty ( int property ) const

pure virtualinherited

Return the number of LOCAL elements with the given property.

Parameters

property [in] Value of the property to consider.

Returns: Number of local elems which have this property.

Implemented in Isorropia::Epetra::Operator.

virtual void Isorropia::Operator::elemsWithProperty	(	int	property,
		int *	elementList,
		int	len
	)		const

pure virtualinherited

Fill user-allocated list (of length len) with the local element ids of the LOCAL elements with the given property.

Parameters

property	[in] Value of the property to consider.
elementList	[out] User allocated array (of size at least `len`) of local ID that have the asked property.
len	[in] Maximum lenght for the array. If `len` is greater than the result of numElemsWithProperty() for `property`, only the first and relevant elements are filled.

Remarks: Memory space which is not useful in the array is not initialized or used in this method.

Implemented in Isorropia::Epetra::Operator.

virtual int Isorropia::Operator::extractPropertiesView	(	int &	size,
		const int *&	array
	)		const

pure virtualinherited

Give access of the property array that is owned by the current processor.

Parameters

size	[out] Number of elements in the array.
array	[out] Pointer to the the properties array inside the object.

Remarks: This pointer is only significant if the object still exists. Otherwise, you must use

See Also: Isorropia::Operator::extractPropertiesCopy().; Isorropia::Operator::extractPropertiesCopy()

Implemented in Isorropia::Epetra::Operator.

virtual int Isorropia::Operator::extractPropertiesCopy	(	int	len,
		int &	size,
		int *	array
	)		const

pure virtualinherited

Copy a part of the property array.

Parameters

len	[in] of the array given by the user.
size	[out] Number of elements in the array.
array	[out] Array of properties. Allocated by the user with a size of at least `len` elements.

Remarks: Memory space which is not useful in the array is not initialized or used in this method.

See Also: Isorropia::Operator::extractPropertiesView()

Implemented in Isorropia::Epetra::Operator.

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

Isorropia_LevelScheduler.hpp

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation