Jpetra::CcjSupport::CcjGatherDoubleArray Class Reference

List of all members.

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]

---

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

• CcjGatherDoubleArray.java