Difference between revisions of "Proc"

From Mesham
Jump to navigationJump to search
(Semantics)
m
Line 27: Line 27:
 
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''.
 
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''.
  
 +
''Since:'' Version 0.41b
 
[[Category:Parallel]]
 
[[Category:Parallel]]

Revision as of 18:07, 13 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.
Note: This is a blocking construct and regardless of arguments involves all processes who will either ignore it or execute the block.

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.

Since: Version 0.41b