Difference between revisions of "Alltoall"
From Mesham
Jump to navigationJump to search (Created page with '== Syntax == alltoall[elementsoneach] == Semantics == Will cause each process to send some elements (the number being equal to ''elementsoneach'') to every other process in th…') |
m |
||
| Line 21: | Line 21: | ||
[[Category:Type Library]] | [[Category:Type Library]] | ||
| − | [[Category: | + | [[Category:Compound Types]] |
[[Category:Primitive Communication Types]] | [[Category:Primitive Communication Types]] | ||
Revision as of 17:49, 12 January 2013
Syntax
alltoall[elementsoneach]
Semantics
Will cause each process to send some elements (the number being equal to elementsoneach) to every other process in the group.
Example
x:array[Int,12]::allocated[multiple[]];
var r:array[Int,3]::allocated[multiple[]];
var p;
par p from 0 to 3
{
(x:alltoall[3]):=r;
};
In this example each process sends every other process three elements (the elements in its r.) Therefore each process ends up with twelve elements in x, the location of each is based on the source processes's PID.
