From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 3810 invoked by alias); 20 Oct 2014 13:20:27 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 3794 invoked by uid 89); 20 Oct 2014 13:20:26 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 X-HELO: mail-wi0-f181.google.com Received: from mail-wi0-f181.google.com (HELO mail-wi0-f181.google.com) (209.85.212.181) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-SHA encrypted) ESMTPS; Mon, 20 Oct 2014 13:20:24 +0000 Received: by mail-wi0-f181.google.com with SMTP id hi2so6294027wib.2 for ; Mon, 20 Oct 2014 06:20:20 -0700 (PDT) X-Received: by 10.180.73.18 with SMTP id h18mr20625953wiv.34.1413811220692; Mon, 20 Oct 2014 06:20:20 -0700 (PDT) Received: from [172.21.188.197] ([62.154.173.198]) by mx.google.com with ESMTPSA id y5sm9642057wij.0.2014.10.20.06.20.19 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 20 Oct 2014 06:20:19 -0700 (PDT) Message-ID: <54450C0A.6050705@gmail.com> Date: Mon, 20 Oct 2014 13:20:00 -0000 From: Marco Atzeri User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 MIME-Version: 1.0 To: "cygwin@cygwin.com" Subject: Tester for openblas needed Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2014-10/txt/msg00270.txt.bz2 Hi, before making an official cygwin package for OpenBlas (fast Blas) http://www.openblas.net/ I would like some test from potential users. The dynamic library is multicore, so it should work on "all" processors, but unfortunately I can only test on my dual Core i5-3320M. On this system the speedup of basic BLAS operation is notable. 1000x1000x1000 DGEMM tests give for x86_64 architecture 0.818047 s 2444.847301 MFLOPS x86_64 netlib reference 0.055000 s 36363.636364 MFLOPS x86_64 openblas 2.12 for i686 architecture 0.825001 s 2424.239486 MFLOPS i686 netlib reference 0.095001 s 21052.409975 MFLOPS i686 openblas 2.12 Libraries are available on: http://matzeri.altervista.org/x86/openblas/libopenblas_dynamic/ http://matzeri.altervista.org/x86_64/openblas/libopenblas_dynamic/ To use them is enough to copy the cygblas-0.dll in any path directory before "/usr/lib/lapack" where the lapack one is located. On http://matzeri.altervista.org/works/openblas/ there is also a DGEMM test routine, if you have no other benchmark. Thanks in advance Marco -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple