Difference between revisions of "Proc"

From Mesham
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m
Line 19: Line 19:
 
     print("Hello from 0\n");
 
     print("Hello from 0\n");
 
  };
 
  };
 
+
 
  proc 1 {
 
  proc 1 {
 
     print("hello from 1\n");
 
     print("hello from 1\n");

Revision as of 13:27, 12 January 2013

Syntax

proc n
{
process body
}

where n is a variable or value known at compile time.

Semantics

This will limit execution of a block to a certain process whose rank is guaranteed to be that specified.

Note: A variable declared within a proc block and allocated multiple will in fact, by inference, be allocated to the group of processes which contains a single process who's rank is the same as the proc block's.

Example

#include <io>
proc 0 {
   print("Hello from 0\n");
};

proc 1 {
   print("hello from 1\n");
};

The code example will run on two processes, the first will display the message Hello from 0, whilst the second will output the message hello from 1.