From owner-sc22wg5+sc22wg5-dom8=www.open-std.org@open-std.org Mon Jul 8 23:38:42 2013 Return-Path: X-Original-To: sc22wg5-dom8 Delivered-To: sc22wg5-dom8@www.open-std.org Received: by www.open-std.org (Postfix, from userid 521) id 16E7C357014; Mon, 8 Jul 2013 23:38:42 +0200 (CEST) Delivered-To: sc22wg5@open-std.org X-Greylist: delayed 347 seconds by postgrey-1.34 at www5.open-std.org; Mon, 08 Jul 2013 23:38:41 CEST Received: from exprod6og104.obsmtp.com (exprod6og104.obsmtp.com [64.18.1.187]) by www.open-std.org (Postfix) with ESMTP id 173413568AE for ; Mon, 8 Jul 2013 23:38:25 +0200 (CEST) Received: from CFWEX01.americas.cray.com ([136.162.34.11]) (using TLSv1) by exprod6ob104.postini.com ([64.18.5.12]) with SMTP ID DSNKUdsxUDv0YtGzEHENOF335a1cunEZUmFK@postini.com; Mon, 08 Jul 2013 14:38:41 PDT Received: from fortran.us.cray.com (172.31.19.200) by CFWEX01.americas.cray.com (172.30.88.25) with Microsoft SMTP Server id 14.2.342.3; Mon, 8 Jul 2013 16:31:29 -0500 Message-ID: <51DB30EA.4030904@cray.com> Date: Mon, 8 Jul 2013 16:36:42 -0500 From: Bill Long Reply-To: Organization: Cray Inc. User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:17.0) Gecko/20130509 Thunderbird/17.0.6 MIME-Version: 1.0 To: sc22wg5 Subject: Re: (j3.2006) (SC22WG5.5025) Canada's national body report to WG 9 (Ada) References: <20130708210335.C0094356938@www.open-std.org> In-Reply-To: <20130708210335.C0094356938@www.open-std.org> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-sc22wg5@open-std.org Precedence: bulk On 7/8/13 3:33 PM, Van Snyder wrote: > Canada's national body report to the recent WG 9 meeting in Berlin > remarked that WG 14 and WG 21 "are making significant progress towards > the model and implementation of support for massive parallelism (many > cores) within their languages." Not sure I would call many cores "massive parallelism", or whether a language binding to pthreads represents "significant progress". > > Continuing, "Canada formally requests that WG9 setup a project to add > support for many core parallelism within the Ada language. The work of > Michel, Moore, and Pinho may be a good starting point, but we leave it > to the ARG to make that determination. We believe that it is important > that such a mechanism be compatible with existing Ada concurrency and > real time capabilities, if possible. Something like DO CONCURRENT ? Or try to get the OpenMP group to add an interface for Ada? > > "In addition, Canada believes that there should be a language > independent model of massive parallelization (data-level parallelism and > control-level parallelism) that underlies the work going on in > individual languages. The justification for this is that virtually every > system or application built today consists of multiple languages linked > into a common image. To effectively implement any level of parallelism > in such a system requires that a common and compatible approach be > followed. To this end, Canada is proposing to SC 22 for its plenary in > September, that SC 22 form a study group to determine if the creation of > such a model is possible and if so, how it can be achieved and what the > best vehicle would be to progress such work. We ask that WG 9 and WG 9 > p-members be supportive of this initiative." I suspect that the MPI Forum would claim that this is already accomplished. However, if they want language-based approaches... > > Since Fortran has apparently taken the lead with coarrays, it might be > worthwhile to mention coarrays in this context, if the topic arises at > the SC 22 meeting. And also that there is a demonstration implementation of coarrays in C++. Cheers, Bill > > > _______________________________________________ > J3 mailing list > J3@mailman.j3-fortran.org > http://mailman.j3-fortran.org/mailman/listinfo/j3 > -- Bill Long longb@cray.com Fortran Technical Support & voice: 651-605-9024 Bioinformatics Software Development fax: 651-605-9142 Cray Inc./Cray Plaza, Suite 210/380 Jackson St./St. Paul, MN 55101