From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 53320 invoked by alias); 24 Jun 2018 18:29:22 -0000 Mailing-List: contact fortran-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: fortran-owner@gcc.gnu.org Received: (qmail 52856 invoked by uid 89); 24 Jun 2018 18:29:22 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.5 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,HTML_MESSAGE,KAM_NUMSUBJECT,RCVD_IN_DNSWL_NONE,SPF_PASS autolearn=no version=3.3.2 spammy=Hx-spam-relays-external:sk:mail-yb, H*r:sk:mail-yb, HX-HELO:sk:mail-yb, distributing X-Spam-User: qpsmtpd, 3 recipients X-HELO: mail-yb0-f177.google.com Received: from mail-yb0-f177.google.com (HELO mail-yb0-f177.google.com) (209.85.213.177) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Sun, 24 Jun 2018 18:29:19 +0000 Received: by mail-yb0-f177.google.com with SMTP id f12-v6so767932ybp.5; Sun, 24 Jun 2018 11:29:18 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=BkwSP2Yjqpv8eZ9ulBKnxocEDl4Lh2qnMO1dPzrujMY=; b=n3H3BBC2rjAgOlYvSzJ83nJBXdwj6Mp7CoKE+XoL04Ym2QQweNeJWNfqrnGNaNcvis e3evTm7vTv0E5DcKuyAwMIXIKJy7sTnu0bC4XRUFMJ9/Y4YSTN7aHOsKN5AAwoPYapZG fODTrmogCE6gw9kghQyr8mNpf3g1ZaBkPxSEmGNxrUK5ucECZIsZ9PQW4Gc2IXnlAPwC /JaoDU6EalG7a1o3cmG+eKCToE7F+yJxw3fRn40CV+NoZS2uJeZLTIcUfJpXUGhGgLsf 8DvW8k9qZ/+V7Aa/Tn7i5ZOqihDYdxQLR/dUGQttin57GoVz3N/q/V8SUas3nmeNCsIY 2WKQ== X-Gm-Message-State: APt69E0Hq3yzdNxcmrJUBPht4xI6o15z6a9c/Eu1fSmWkaNOk8dwTgd2 kpF7t3l1/vz74FXPObr5jUnobSTIBAzC1lIZMBM= X-Google-Smtp-Source: ADUXVKLHtGdzVtZ3XqF5/OLfPZIT70hJUe8VytXeULMbtN4jUYHmiIFgTldcwzhUPsNZdROFUOX/kFdAUG60dHLs2XA= X-Received: by 2002:a25:bfc5:: with SMTP id q5-v6mr4931212ybm.511.1529864956667; Sun, 24 Jun 2018 11:29:16 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a0d:e304:0:0:0:0:0 with HTTP; Sun, 24 Jun 2018 11:29:16 -0700 (PDT) In-Reply-To: <84f2ba3c-c434-e061-ebec-dde8d1b97cad@orange.fr> References: <84f2ba3c-c434-e061-ebec-dde8d1b97cad@orange.fr> From: Janne Blomqvist Date: Mon, 25 Jun 2018 19:16:00 -0000 Message-ID: Subject: Re: GCC8 To: Jerome Huck Cc: gcc-help , gcc mailing list , Fortran List Content-Type: text/plain; charset="UTF-8" X-IsSubscribed: yes X-SW-Source: 2018-06/txt/msg00160.txt.bz2 On Sun, Jun 24, 2018 at 5:45 PM, Jerome Huck wrote: > Private communication. If someone has clues/hints...Thanks in advance !!! > > Hi. > > I just have a new small laptop with N4200 proc. In the past I have one > N3470. > > With GCC , a couple of years ago, I used the Linpack(Fortran) in single > precision to have an idea of the proc capabilities. > > I attached the Fortran source code. I downloaded GCC from this web page > see http://www.equation.com/servlet/equation.cmd?fa=fortran > > With the N3470, I was able to have more than 1 GigaFlops. (-O2, -O4...) > and there was a difference when you changed the level of optimisation. > > I just tried it with the N4200, same result with different levels of > optimisation, benchmark around 300 Megaflops !!! > > I was just expecting something a little above the N3470 ! > > Clues/Hints? > > Thanks in advance. > > Best regards. > Last I heard, equation.com have (substantially) modified the GCC version they are distributing. I recommend that you either try to recreate your problem with a build of the upstream sources (e.g. from the mingw-w64 project), or that you contact equation.com for help with your issue with their product. (Added the fortran list to CC, in case other gfortran developers have better up to date information about the equation.com builds) -- Janne Blomqvist