From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1163 invoked by alias); 21 Oct 2014 14:01:20 -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 1114 invoked by uid 89); 21 Oct 2014 14:01:19 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.6 required=5.0 tests=BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 X-HELO: mail-wg0-f48.google.com Received: from mail-wg0-f48.google.com (HELO mail-wg0-f48.google.com) (74.125.82.48) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-SHA encrypted) ESMTPS; Tue, 21 Oct 2014 14:01:17 +0000 Received: by mail-wg0-f48.google.com with SMTP id k14so1445733wgh.31 for ; Tue, 21 Oct 2014 07:01:14 -0700 (PDT) X-Received: by 10.194.92.82 with SMTP id ck18mr42592215wjb.103.1413900074288; Tue, 21 Oct 2014 07:01:14 -0700 (PDT) Received: from [172.21.188.197] ([149.6.156.42]) by mx.google.com with ESMTPSA id bj7sm15478188wjc.33.2014.10.21.07.01.13 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 21 Oct 2014 07:01:13 -0700 (PDT) Message-ID: <5446671E.3050501@gmail.com> Date: Tue, 21 Oct 2014 14:01:00 -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: Re: Tester for openblas needed References: <54450C0A.6050705@gmail.com> <54451D4C.5080604@gmail.com> <54458524.8010603@gmail.com> <5445F384.705@gmail.com> <544649E9.80808@gmail.com> In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2014-10/txt/msg00315.txt.bz2 On 10/21/2014 2:39 PM, Tony Kelman wrote: >> So how many THREADS would you like to see ? > > I think 8 would cover the majority of users, 16 at the most. I've seen > cases where openblas can try to use threads on small problems where it > shouldn't need to, so it would be good to check whether it's smart about > avoiding oversubscription if you run it without setting > OPENBLAS_NUM_THREADS. I will prepare another package > Of course users who really want more threads can compile it themselves, > but it'll be convenient to have a fast blas easily hooked into Cygwin's > packages for numpy, R, octave, etc. R uses it own blas+lapack so no improvement on that side. > -Tony Regards 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