From patchwork Fri Jan 13 16:52:54 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tobias Burnus X-Patchwork-Id: 135927 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) by ozlabs.org (Postfix) with SMTP id 815ABB6F62 for ; Sat, 14 Jan 2012 03:53:34 +1100 (EST) Comment: DKIM? See http://www.dkim.org DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=gcc.gnu.org; s=default; x=1327078414; h=Comment: DomainKey-Signature:Received:Received:Received:Received: Message-ID:Date:From:User-Agent:MIME-Version:To:Subject: Content-Type:Content-Transfer-Encoding:Mailing-List:Precedence: List-Id:List-Unsubscribe:List-Archive:List-Post:List-Help:Sender: Delivered-To; bh=GEonwHbx/vFl/u+/fjW38AM4hg0=; b=ug7+D/InxoTKIm/ /za0vLXKMHv8HFxLV/xBuEzjMV1YTdCe5J4TUQ+VU9j68oXckW+WdGty/ZtcMaQ7 J61WAxACklYOJ38kg29pU/oJP1F8Lbo31VkFlIx6pBm02YvHPquzOJcx+EgLvDzj gVQagA2MHEgcZnX+2CrucGiGeVbA= Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=gcc.gnu.org; h=Received:Received:X-SWARE-Spam-Status:X-Spam-Check-By:Received:Received:Message-ID:Date:From:User-Agent:MIME-Version:To:Subject:Content-Type:Content-Transfer-Encoding:Mailing-List:Precedence:List-Id:List-Unsubscribe:List-Archive:List-Post:List-Help:Sender:Delivered-To; b=wDqMOrnswBjPMcnIwpU4aVZdhL2r3biX5H3iUvzS0sQy7IwCB+Fitlsp4Gqq6c oqxy1dgag2Ou6L5rtTLlZ13BaOM2Erg+asHv9p+CtG4yf1RUPrrWEXgh0eAnXyEO NJihVT4AvZplhvpaSmFxvTRG/pMOU29o3MFf7P/9c+w90=; Received: (qmail 21850 invoked by alias); 13 Jan 2012 16:53:17 -0000 Received: (qmail 21815 invoked by uid 22791); 13 Jan 2012 16:53:11 -0000 X-SWARE-Spam-Status: No, hits=-1.8 required=5.0 tests=AWL, BAYES_00, RCVD_IN_DNSWL_NONE, SUBJ_OBFU_PUNCT_FEW X-Spam-Check-By: sourceware.org Received: from mx01.qsc.de (HELO mx01.qsc.de) (213.148.129.14) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 13 Jan 2012 16:52:57 +0000 Received: from [192.168.178.22] (port-92-204-59-150.dynamic.qsc.de [92.204.59.150]) by mx01.qsc.de (Postfix) with ESMTP id 22B943D2B0; Fri, 13 Jan 2012 17:52:55 +0100 (CET) Message-ID: <4F106166.5010505@net-b.de> Date: Fri, 13 Jan 2012 17:52:54 +0100 From: Tobias Burnus User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:9.0) Gecko/20111220 Thunderbird/9.0 MIME-Version: 1.0 To: gcc patches , gfortran Subject: [Patch] gcc-4.7/changes.html - tone down -fcoarray=lib announcement Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Delivered-To: mailing list gcc-patches@gcc.gnu.org Dear all, seemingly may (potential) users still do not realize that gfortran's multi-image coarray support is not yet usable as only the basic libcaf infrastructure (registering, deregistering, argument passing, syncing, start up/close down, error stop - and all the coindex handling routines) is implemented. The actual communication (pull/push coarray data, locking) does not yet work. Hence, although a lot of progress has been made in term of infrastructure, multi-images are still not usable - not even for hello world programs. (Unless you count "print *, this_image(),' of ', num_images; end" as a such.) I would be happy if someone could check the patch below but also the following pages whether it is clear that they should not yet use -fcoarray=lib with more than one image. a) Release notes (cf. patch below): http://gcc.gnu.org/gcc-4.7/changes.html#fortran b) Wiki release notes: http://gcc.gnu.org/wiki/GFortran#GCC4.7 c) Coarrays in general: http://gcc.gnu.org/wiki/Coarray d) The most important page - as is describes how to compile the library version: http://gcc.gnu.org/wiki/CoarrayLib Tobias Index: changes.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.7/changes.html,v retrieving revision 1.73 diff -u -p -r1.73 changes.html --- changes.html 12 Jan 2012 19:35:29 -0000 1.73 +++ changes.html 13 Jan 2012 16:39:40 -0000 @@ -504,7 +504,8 @@ well.

Additionally, preliminary support for multiple images via an MPI-based coarray communication library has been added. Note: - Remote coarray access is not yet possible. + The library version is not yet usable as remote coarray + access is not yet possible.
  • TS 29113: