From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 46892 invoked by alias); 18 Dec 2016 17:52:20 -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 46863 invoked by uid 89); 18 Dec 2016 17:52:19 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.4 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,RCVD_IN_SORBS_SPAM,SPF_PASS autolearn=no version=3.3.2 spammy=H*r:ip*192.168.0.6, H*i:sk:CAGKnoQ, H*f:sk:CAGKnoQ, frequently X-HELO: mail-io0-f170.google.com Received: from mail-io0-f170.google.com (HELO mail-io0-f170.google.com) (209.85.223.170) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Sun, 18 Dec 2016 17:52:09 +0000 Received: by mail-io0-f170.google.com with SMTP id d9so136696578ioe.0 for ; Sun, 18 Dec 2016 09:52:09 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=pI7YEyO1IeeOXMb+Ag6bJvXOHmhYIs/7EQmMDVqXO5M=; b=CKL2f3dre9hQwrnmN5MICakveZP3+gDr28LVnseP1ZrHC5yEWM4Vt5QtRTvTWhhVKA skpOosFmX6GBnnW6QIxgcqfTfuOAFknjyYzi/+/TvRqOo3dzqM6hkho+SPYn/6V/Zo6w +kGtO8xKTm92Hiy5RGsiXH/4bF15lhwnKazluKGluAR9AhvqKyipg3MQ3IvrzDFPM8+Q Z/NimmUgilCBFXulHYILWU1a6o63GR1LsTJyKylKvka0sa/ZNZNGNuZbsOC51tqRD+C+ ARyCqusj+RhU6GXLQIE/SyWughsC+rrJm6D1g6kpYABYxcm+3pXy01isVU9TMVQ2773p RJmw== X-Gm-Message-State: AKaTC02lH8pxMQdQV34Buv1A/HO8G8zZ+zjiKfYBaPvubNeyZvVy5a6uUktwAd2uNx+Y9Q== X-Received: by 10.107.9.215 with SMTP id 84mr13888561ioj.140.1482083527806; Sun, 18 Dec 2016 09:52:07 -0800 (PST) Received: from [192.168.0.6] (d27-96-48-76.nap.wideopenwest.com. [96.27.76.48]) by smtp.gmail.com with ESMTPSA id h127sm6824216ioa.41.2016.12.18.09.52.07 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 18 Dec 2016 09:52:07 -0800 (PST) Subject: Re: OpenMPI Problem To: cygwin@cygwin.com References: From: cyg Simple Message-ID: <529afec8-bbe5-19b4-8122-d610eb2a2eba@gmail.com> Date: Sun, 18 Dec 2016 17:52:00 -0000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-IsSubscribed: yes X-SW-Source: 2016-12/txt/msg00188.txt.bz2 On 12/18/2016 9:55 AM, Bahadır Öncel wrote: > Hello all! > I've installed cygwin and openmpi successfully. I can compile and run > mpi programs. Twist is, even the openmpi test program hello_c.c approx > takes a minute to run. When I try in my virtual machine (linux) the > same program takes less than a second to run. > I've found that other users asked the same question but did not find > any solution. Windows itself is inherently slow. Adding in the emulation layer slows it even more. So if you want to port the compiler to Windows native you may find a bit faster execution but that may be debatable. > Problem reports: http://cygwin.com/problems.html Use the above when reporting issues, even in a question. > FAQ: http://cygwin.com/faq/ Since speed of execution is a frequently asked question, you might find some tidbits in the FAQ. And don't forget about BLODA issues. -- cyg Simple -- 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