From owner-freebsd-questions@FreeBSD.ORG Thu Aug 7 15:03:42 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5BBD5106566C for ; Thu, 7 Aug 2008 15:03:42 +0000 (UTC) (envelope-from mkhitrov@gmail.com) Received: from fk-out-0910.google.com (fk-out-0910.google.com [209.85.128.190]) by mx1.freebsd.org (Postfix) with ESMTP id DEF7F8FC16 for ; Thu, 7 Aug 2008 15:03:41 +0000 (UTC) (envelope-from mkhitrov@gmail.com) Received: by fk-out-0910.google.com with SMTP id k31so572105fkk.11 for ; Thu, 07 Aug 2008 08:03:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:cc:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=XhHeBVNPsI/kHnWd3XkroQH5sL5O3DitzMFkRoKy+Ns=; b=x9Ish5VHGL5tUpH2JHFheD/0HQ1bXO+XYnb1XXC9MT3uIvhsvyh4hPzGiv/cdzF35Q ZPEVLsdLe/MG9yXlVz8qSos+wa9nwxDccyI9UCzVSjhxyFsAbwKnzrNtvTmJ7ELn88Pz dVTjKpXkRkURjehfnWn8nHYfUHH1w0HGVqm94= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=mcEehb7EEPRhjIhitEIIAkzs8gADFQ/6plw3NrDzZjCmtZhm2ajm1hYGXXdflODqZ5 duMql0JHHu/D5AcRYfYT1yL5aJV1jz7ixlJ9W4ztt5+2TrixquqwVaLbaLq9TvT/vqgY rIGrBAaTDxmAEoJoMAGtGRcB86cLdDRK/pCOg= Received: by 10.187.243.17 with SMTP id v17mr139545far.77.1218121420720; Thu, 07 Aug 2008 08:03:40 -0700 (PDT) Received: by 10.187.217.10 with HTTP; Thu, 7 Aug 2008 08:03:40 -0700 (PDT) Message-ID: <26ddd1750808070803v762e536dofd72d8b3f17c5baa@mail.gmail.com> Date: Thu, 7 Aug 2008 11:03:40 -0400 From: "Maxim Khitrov" To: "Sean Cavanaugh" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <26ddd1750808070647yf0a9205u514c6ba87fbf97a5@mail.gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: 64-bit Linux Binary Compatibility (for Matlab) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Aug 2008 15:03:42 -0000 On Thu, Aug 7, 2008 at 10:52 AM, Sean Cavanaugh wrote: > > >> Date: Thu, 7 Aug 2008 09:47:45 -0400 >> From: mkhitrov@gmail.com >> To: freebsd-questions@freebsd.org >> Subject: 64-bit Linux Binary Compatibility (for Matlab) > >> Apparently Matlab tries to allocate a continuous chunk of memory, and >> we needed to upgrade to 64-bit hardware to give it access to more than >> 1GB of memory, which is about the most that it was able to get before. >> It's a lousy explanation, but I wasn't employed at this place when >> this diagnosis was made. >> > > running 32-bit gives you access to 4GB of RAM, not 1. there is some address > space that is used up by hardware such as video cards that will reduce that > number reported by the OS. > I know that, the key word there is continuous space. In either case, I'm only repeating what was said to me as the reason for purchasing a brand new server - run in 64-bit mode to give Matlab more virtual memory. It may end up being the case that the problem was completely unrelated. I'll know in about an hour :) - Max