From owner-freebsd-stable Wed Dec 22 15:34:12 1999 Delivered-To: freebsd-stable@freebsd.org Received: from relax.dreamfire.net (relax.dreamfire.net [207.113.154.29]) by hub.freebsd.org (Postfix) with ESMTP id 67C3114DA6 for ; Wed, 22 Dec 1999 15:34:04 -0800 (PST) (envelope-from sean@dreamfire.net) Received: from dreamfire.net (indigo.dreamfire.net [192.168.10.8]) by relax.dreamfire.net (Postfix) with ESMTP id 78FEC65 for ; Wed, 22 Dec 1999 15:34:02 -0800 (PST) Message-ID: <38616027.2BB9C789@dreamfire.net> Date: Wed, 22 Dec 1999 15:35:03 -0800 From: Sean-Paul Rees Organization: The Dreamfire Solutions Group X-Mailer: Mozilla 4.7 [en] (X11; I; SunOS 5.6 sun4m) X-Accept-Language: en MIME-Version: 1.0 To: freebsd-stable@FreeBSD.ORG Subject: Re: AMD 3DNow instructions on FreeBSD References: <199912222253.XAA16064@dorifer.heim3.tu-clausthal.de> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Oliver Fromme wrote: > > Sean-Paul Rees wrote in list.freebsd-stable: > > Is there a MMX enabled setiathome for us with non-3DNow! enhanced > > processors? > > No, MMX is completely useless for this kind of stuff, because > MMX does not support floating point operations. Sorry. > > However, I modified the FFT algorithm to optimize memory > throughput, at the cost of memory footprint (it needs about > 2 Mbyte more RAM). The speed increase is not as impressive > as with the 3DNow version, but it's still significant. > Here are some numbers: Thats a pretty big increase. I wish those seti folks would get a clue and build new clients for it. I'm assuming your patches generate the same results? Sean To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message