org.apache.reef.io.network.group.impl.utils

Class ScatterHelper

java.lang.Object

org.apache.reef.io.network.group.impl.utils.ScatterHelper

public final class ScatterHelper
extends Object

Utility class for ScatterSender.

Method Summary

Modifier and Type	Method and Description
static List<Integer>	getUniformCounts(int elementCount, int taskCount) Uniformly distribute a number of elements across a number of Tasks and return a list of counts.

Methods inherited from class java.lang.Object

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

Method Detail

getUniformCounts

public static List<Integer> getUniformCounts(int elementCount,
                                             int taskCount)

Uniformly distribute a number of elements across a number of Tasks and return a list of counts. If uniform distribution is impossible, then some Tasks will receive one more element than others. The sequence of the number of elements for each Task is non-increasing.

Parameters:

elementCount - number of elements to distribute

taskCount - number of Tasks that receive elements

Returns:

list of counts specifying how many elements each Task should receive