Newsgroups: comp.parallel
From: ucaa2385@iris2.csv.ica.uni-stuttgart.de (Peter Hermann)
Subject: Re: What is a barrier?
Organization: Comp.Center (RUS), U of Stuttgart, FRG
Date: 12 Sep 1995 13:24:58 GMT
Message-ID: <4341na$9pd@usenet.srv.cis.pitt.edu>

Rudy Chukran (chukran@chukran.austin.ibm.com) wrote:
: Can someone give me a synopsis of what a barrier is and how
: it helps parallel computation. If that is too hard to do in
: a paragraph, can you suggest some literature to read?
[snip]
: Are barriers implemented as either language constructs or
: OS calls on UNIX or other platforms? AIX certainly doesn't have
: them. I am curious to what degree this barrier concept has been implemented
: elsewhere.

If you look deep enough into
the web-site http://lglwww.epfl.ch/Ada/
you will somewhere find the "Rationale"-document of the Ada95-standard.
In chapter 9 "Tasking" the protected records are described
and there is a neat example how barriers work (in 9.1 and 9.1.2)

--
Peter Hermann  Tel:+49-711-685-3611 Fax:3758 ph@csv.ica.uni-stuttgart.de
Pfaffenwaldring 27, 70569 Stuttgart Uni Computeranwendungen
Team Ada: "C'mon people let the world begin" (Paul McCartney)

