mpi

Class GraphParms

java.lang.Object

mpi.GraphParms

public final class GraphParms
extends java.lang.Object

Graph topology information associated with a communicator.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	GraphParms(int[] index, int[] edges) Constructs a graph topology information object.

Method Summary

Modifier and Type	Method and Description
int	getEdge(int i) Returns the edge i.
int	getEdgeCount() Returns the number of edges.
int	getIndex(int i) Returns the index of the node i.
int	getIndexCount() Returns the number of nodes.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GraphParms

protected GraphParms(int[] index,
                     int[] edges)

Constructs a graph topology information object.

Parameters:

index - node degrees.

edges - graph edges.

Method Detail

getIndexCount

public int getIndexCount()

Returns the number of nodes.

Returns:

number of nodes.

getIndex

public int getIndex(int i)

Returns the index of the node i.

getIndex(0) returns the degree of the node 0, and getIndex(i)-getIndex(i-1) is the degree of the node i.

Parameters:

i - position of the node.

Returns:

the index.

getEdgeCount

public int getEdgeCount()

Returns the number of edges.

Returns:

number of edges.

getEdge

public int getEdge(int i)

Returns the edge i.

The list of neighbors of node zero is stored in getEdge(j), for 0 ≤ j ≤ getIndex(0)-1 and the list of neighbors of node i, i > 0, is stored in getEdge(j), getIndex(i-1) ≤ j ≤ getIndex(i)-1.

Parameters:

i - index of the edge.

Returns:

the edge.