From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 36497 invoked by alias); 2 Dec 2015 14:00:50 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Received: (qmail 36482 invoked by uid 89); 2 Dec 2015 14:00:49 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.8 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS,T_RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Wed, 02 Dec 2015 14:00:47 +0000 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (Postfix) with ESMTPS id 2E3D58E362; Wed, 2 Dec 2015 14:00:46 +0000 (UTC) Received: from localhost.localdomain (vpn1-4-101.ams2.redhat.com [10.36.4.101]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id tB2E0iAa022864; Wed, 2 Dec 2015 09:00:44 -0500 Subject: Re: [gomp-nvptx 2/9] nvptx backend: new "uniform SIMT" codegen variant To: Jakub Jelinek , Nathan Sidwell References: <1448983707-18854-1-git-send-email-amonakov@ispras.ru> <1448983707-18854-3-git-send-email-amonakov@ispras.ru> <20151202104034.GG5675@tucnak.redhat.com> <565EEBF7.8070105@acm.org> <20151202131013.GL5675@tucnak.redhat.com> <565EF470.3050400@acm.org> <20151202134602.GN5675@tucnak.redhat.com> Cc: Alexander Monakov , gcc-patches@gcc.gnu.org, Dmitry Melnik , Thomas Schwinge From: Bernd Schmidt Message-ID: <565EF98B.2000802@redhat.com> Date: Wed, 02 Dec 2015 14:00:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: <20151202134602.GN5675@tucnak.redhat.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2015-12/txt/msg00265.txt.bz2 On 12/02/2015 02:46 PM, Jakub Jelinek wrote: > Or does the OpenACC execution model not allow anything like that, i.e. > have some function with an automatic variable pass the address of that > variable to some other function and that other function use #acc loop kind > that expects the caller to be at the worker level and splits the work among > the threads in the warp, on the array section pointed by that passed in > pointer? See the OpenMP testcase I've posted in this thread. I believe you're making a mistake if you think that the OpenACC "specification" considers such cases. Bernd