Allreduce - Revision history

Polas: 6 revisions imported

2019-04-15T15:44:36Z

6 revisions imported

Polas at 14:14, 15 April 2013

2013-04-15T14:14:32Z

Polas at 18:15, 13 January 2013

2013-01-13T18:15:03Z

Polas at 18:14, 13 January 2013

2013-01-13T18:14:32Z

Polas at 17:48, 12 January 2013

2013-01-12T17:48:59Z

Polas at 17:30, 12 January 2013

2013-01-12T17:30:04Z

Polas: Created page with '== Syntax == allreduce[operation] == Semantics == Similar to the reduce type, but the reduction will be performed on each process and the result is also available to all. …'

2010-01-10T19:36:44Z

Created page with '== Syntax == allreduce[operation] == Semantics == Similar to the reduce type, but the reduction will be performed on each process and the result is also available to all. …'

New page

== Syntax ==

allreduce[operation]

== Semantics ==

Similar to the [[reduce]] type, but the reduction will be performed on each process and the result is also available to all.

== Example ==

var x:Int::allocated[multiple[]];
var p;
par p from 0 to 3
{
(x::allreduce["min"]):=p;
};

In this case all processes will perform the reduction on ''p'' and all processes will have the minimum value of ''p'' placed into their copy of ''x''.

[[Category:Type Library]]
[[Category:Composite Types]]
[[Category:Primitive Communication Types]]

@@ Line 17: / Line 17: @@
 In this case all processes will perform the reduction on ''p'' and all processes will have the minimum value of ''p'' placed into their copy of ''x''.
 == Supported operations ==
 {{ Template:ReductionOperations }}
 [[Category:Type Library]]
 [[Category:Compound Types]]
 [[Category:Primitive Communication Types]]

@@ Line 21: / Line 21: @@
 {{ Template:ReductionOperations }}
 [[Category:Type Library]]
 [[Category:Compound Types]]
 [[Category:Primitive Communication Types]]

← Older revision	Revision as of 15:44, 15 April 2019
(No difference)

@@ Line 9: / Line 9: @@
 == Example ==
-  var x:Int::allocated[multiple[]];
+  function void main() {
- var p;
+    var x:Int::allocated[multiple[]];
- par p from 0 to 3
+    var p;
+    par p from 0 to 3 {
-    (x::allreduce["min"]):=p;
+       (x::allreduce["min"]):=p;
   };