From owner-freebsd-current@FreeBSD.ORG Fri Dec 15 05:43:17 2006 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 2F38516A407 for ; Fri, 15 Dec 2006 05:43:17 +0000 (UTC) (envelope-from scottl@samsco.org) Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57]) by mx1.FreeBSD.org (Postfix) with ESMTP id 380B943CA1 for ; Fri, 15 Dec 2006 05:41:36 +0000 (GMT) (envelope-from scottl@samsco.org) Received: from [192.168.254.14] (imini.samsco.home [192.168.254.14]) (authenticated bits=0) by pooker.samsco.org (8.13.4/8.13.4) with ESMTP id kBF5h8Bs029837; Thu, 14 Dec 2006 22:43:13 -0700 (MST) (envelope-from scottl@samsco.org) Message-ID: <458235EC.80300@samsco.org> Date: Thu, 14 Dec 2006 22:43:08 -0700 From: Scott Long User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.7) Gecko/20050416 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Steve Kargl References: <20061213192150.CF83D16A417@hub.freebsd.org> <20061214183026.GA1532@turion.vk2pj.dyndns.org> <4581A3E3.9060807@samsco.org> <200612151450.39260.doconnor@gsoft.com.au> <20061215044453.GB9381@troutmask.apl.washington.edu> In-Reply-To: <20061215044453.GB9381@troutmask.apl.washington.edu> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-1.4 required=3.8 tests=ALL_TRUSTED autolearn=failed version=3.1.1 X-Spam-Checker-Version: SpamAssassin 3.1.1 (2006-03-10) on pooker.samsco.org Cc: freebsd-current@freebsd.org, Peter Jeremy Subject: Re: Let's use gcc-4.2, not 4.1 -- OpenMP X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Dec 2006 05:43:17 -0000 Steve Kargl wrote: > On Fri, Dec 15, 2006 at 02:50:30PM +1030, Daniel O'Connor wrote: > >>On Friday 15 December 2006 05:50, Scott Long wrote: >> >>>Yes, the industry moves fast, but that's no reason to fool ourselves >>>into thinking that the FSF will support GCC 4.2 a day after they release >>>4.3 and start working on 4.4. Your point above about the lifespan of >>>FreeBSD 7.x is a valid one, and I agree that it should be a >>>consideration. Vendor support is a myth and should not be a >>>consideration. >> >>Not to mention it is *trivial* to install a compiler using ports or packages. >> >>If you are serious about high performance computing installing a new compiler >>is about the lowest barrier you'll find. >> > > > Actually, 4.1.x will produce much worse code than 3.4.6. > You can search the gcc mail listings for extensive comparison > by Clinton Whaley (the author of math/atlas) for details. > Has this been fixed in GCC 4.2? If the FSF claims to have fixed it, has it been actually verified? I thought that gcc 4 was supposed to solve the world's problems with vectorization. Scott