From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 13845 invoked by alias); 29 Jun 2012 10:56:16 -0000 Received: (qmail 13837 invoked by uid 22791); 29 Jun 2012 10:56:16 -0000 X-SWARE-Spam-Status: No, hits=-4.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 29 Jun 2012 10:56:02 +0000 From: "steven at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug libfortran/51119] MATMUL slow for large matrices Date: Fri, 29 Jun 2012 10:56:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: libfortran X-Bugzilla-Keywords: X-Bugzilla-Severity: enhancement X-Bugzilla-Who: steven at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: jb at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: CC Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2012-06/txt/msg01934.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51119 Steven Bosscher changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |steven at gcc dot gnu.org --- Comment #9 from Steven Bosscher 2012-06-29 10:55:48 UTC --- (In reply to comment #7) > IIRC I reached about 30-40 % of peak > flops which was a bit disappointing. This sounds quite impressive to me, actually. It would be interesting to investigate using the IFUNC mechanism to provide optimized (e.g. vectorized) versions of some of the library functions.