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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Ada and OpenMP
Date: Fri, 8 Mar 2013 17:40:21 -0600
Organization: Jacob Sparre Andersen Research & Innovation
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Date: 2013-03-08T17:40:21-06:00
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"Rego, P." <pvrego@gmail.com> wrote in message 
news:f6fff4ba-e9a1-4335-a4a0-cb9d60152ad9@googlegroups.com...
>> On Thursday, March 7, 2013 4:42:59 PM UTC-7, Randy Brukardt wrote:
>
>> Ada is about doing things right, and that should be true even for
>> implementation-defined stuff. And we *need* people to figure out good 
>> ways
>> of doing these things (for instance, a "parallel" classification for
>> functions would be very helpful). The sloppy way helps little.
>
> Got your point.
> Would you have a suggestion on how I could a loop such as 
> "parallelization" like
>
> pragma OMP(Parallel_For)
> for I in 1 .. MAX loop
>   A(I) := A(I) + 1
> end loop;
>
> but without using pragmas?

(1) Use a compiler that does this automatically (apparently GNAT does this 
in some circumstances).
(2) Use a library like Paraffin; a bit less convinient but it will work on 
any Ada compiler for any target. Some of the Ada 2012 features may make such 
a library more convinient to write (I haven't been keeping up with Brad's 
work on this).
(3) Use a compiler with an appropriate extension for parallel loops. One 
possibility would be something like:

for I in 1 .. MAX loop in parallel
  A(I) := A(I) + 1
end loop;

This of course ties you to a particular implementation, or to wait for Ada 
202x. Of course, so does a pragma, and it's much less likely to be 
standardized. So I suggest (1) or (2).

                                              Randy.