From owner-freebsd-hardware@FreeBSD.ORG Fri Mar 12 10:01:34 2004 Return-Path: Delivered-To: freebsd-hardware@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1DE9D16A4CE for ; Fri, 12 Mar 2004 10:01:34 -0800 (PST) Received: from copper.ucsc.edu (copper.ucsc.edu [128.114.129.186]) by mx1.FreeBSD.org (Postfix) with ESMTP id 10A6A43D45 for ; Fri, 12 Mar 2004 10:01:34 -0800 (PST) (envelope-from brianm@moffetimages.com) Received: by copper.ucsc.edu (CommuniGate Pro PIPE 4.1.8) with PIPE id 2153296; Fri, 12 Mar 2004 10:01:34 -0800 Received: from [128.114.20.94] (HELO moffetimages.com) by copper.ucsc.edu (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2153297; Fri, 12 Mar 2004 10:01:26 -0800 Date: Fri, 12 Mar 2004 10:01:52 -0800 Content-Type: text/plain; charset=US-ASCII; format=flowed Mime-Version: 1.0 (Apple Message framework v553) To: "Jin Guojun [DSD]" From: Brian D.Moffet In-Reply-To: <4051F524.619DAACD@lbl.gov> Message-Id: <57373EA4-744F-11D8-80C3-000A957CD220@moffetimages.com> Content-Transfer-Encoding: 7bit X-Mailer: Apple Mail (2.553) X-UCSC-CATS-MailScanner-Information: This message was scanned by Mailscanner X-UCSC-CATS-MailScanner: Found to be clean X-UCSC-CATS-MailScanner-SpamCheck: not spam, SpamAssassin (score=-4.9, required 8, BAYES_00 -4.90) cc: Artem Koutchine cc: "freebsd-hardware@freebsd.org" Subject: Re: Multiprocessor system VS one processor system X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 12 Mar 2004 18:01:34 -0000 Curious, Hmm, if that's true, then I'll have to check and see what is going on. I have a program which gains about 30 percent increase in speed by turning on threads with a dual-CPU FreeBSD 4.8 system. It's a simple mandelbrot generator, with two threads, one starting at the beginning going forward, and one starting at the end and going backward. Brian On Friday, March 12, 2004, at 09:36 AM, Jin Guojun [DSD] wrote: > I do not think FreeBSD has yet supported SMP thread, which I hoped > to happen for a long time. -- Brian D. Moffet -- Film and Digital Media Dept. 1156 High Street, Santa Cruz CA 95064 831-459-4242