From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261969AbTICMKC (ORCPT ); Wed, 3 Sep 2003 08:10:02 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261971AbTICMKC (ORCPT ); Wed, 3 Sep 2003 08:10:02 -0400 Received: from pc1-cwma1-5-cust4.swan.cable.ntl.com ([80.5.120.4]:34251 "EHLO dhcp23.swansea.linux.org.uk") by vger.kernel.org with ESMTP id S261969AbTICMKA (ORCPT ); Wed, 3 Sep 2003 08:10:00 -0400 Subject: Re: Scaling noise From: Alan Cox To: Bernd Eckenfels Cc: Linux Kernel Mailing List In-Reply-To: References: Content-Type: text/plain Content-Transfer-Encoding: 7bit Message-Id: <1062590946.19059.18.camel@dhcp23.swansea.linux.org.uk> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.4 (1.4.4-4) Date: Wed, 03 Sep 2003 13:09:07 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mer, 2003-09-03 at 07:12, Bernd Eckenfels wrote: > Thats why NUMA gets so popular. NUMA doesn't help you much. > Larry, dont forget, that Linux is growing in the University Labs, where > those big NUMA and Multi-Node Clusters are most popular for Number > Crunching. multi node yes, numa not much and where numa-like systems are being used they are being used for message passing not as a fake big pc. Numa is valuable because - It makes some things go faster without having to rewrite them - It lets you partition a large box into several effective small ones cutting maintenance - It lets you partition a large box into several effective small ones so you can avoid buying two software licenses for expensive toys if you actually care enough about performance to write the code to do the job then its value is rather questionable. There are exceptions as with anything else.