Jpetra.CcjSupport.CcjGatherDoubleArray Class Reference

Inheritance diagram for Jpetra.CcjSupport.CcjGatherDoubleArray:

Collaboration diagram for Jpetra.CcjSupport.CcjGatherDoubleArray:

Public Member Functions
	CcjGatherDoubleArray (int groupSize)
void	setElementAt (int index, int groupSize, Serializable object)
Serializable	elementAt (int index, int groupSize)
double[]	returnAllElements ()
double[]	scanSums (int index)

Detailed Description

Used by CCJ to collect all the allElements together during a CCJ allGather call. Implements the CCJ interface Partitionable.

Author

Jason Cross

Constructor & Destructor Documentation

Jpetra.CcjSupport.CcjGatherDoubleArray.CcjGatherDoubleArray ( int  groupSize )

inline

Creates a new CcjGatherDoubleArray.

Parameters

groupSize

number of processes in the group

Member Function Documentation

Serializable Jpetra.CcjSupport.CcjGatherDoubleArray.elementAt ( int  index, int  groupSize  )

inline

Used internally by CCJ.

Parameters

index	process ID or rank
groupSize	number of processes in the group

Returns

ArrayList from process with this index

double [] Jpetra.CcjSupport.CcjGatherDoubleArray.returnAllElements ( )

inline

Takes all second degree elements of allElements and joins them into one int array.

Returns

all arrays from all proceses put in order by process into one int array

the size of the int array to be returned

tracks the position of returnResults when performing the joining of allElements

contains the contiguous list of values to be returned

double [] Jpetra.CcjSupport.CcjGatherDoubleArray.scanSums ( int  index )

inline

Starts at allElements[index] and decraments down allElements adding all second degree values of allElements to the second degree values of allElements[index].

Parameters

index

equal to the rank of the calling process

Returns

array of scan sums

void Jpetra.CcjSupport.CcjGatherDoubleArray.setElementAt ( int  index, int  groupSize, Serializable  object  )

inline

Used internally by CCJ.

Parameters

index	process ID or rank
groupSize	number of processes in the group
object	object being added to allElements[index]

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

• CcjGatherDoubleArray.java