From owner-freebsd-cluster Wed Dec 11 2:34:19 2002 Delivered-To: freebsd-cluster@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8812B37B401 for ; Wed, 11 Dec 2002 02:34:17 -0800 (PST) Received: from gate.nentec.de (gate2.nentec.de [194.25.215.66]) by mx1.FreeBSD.org (Postfix) with ESMTP id D6FD543EA9 for ; Wed, 11 Dec 2002 02:34:15 -0800 (PST) (envelope-from sporner@nentec.de) Received: from nenny.nentec.de (root@nenny.nentec.de [153.92.64.1]) by gate.nentec.de (8.11.3/8.9.3) with ESMTP id gBBAY4P13069; Wed, 11 Dec 2002 11:34:05 +0100 Received: from nentec.de (andromeda.nentec.de [153.92.64.34]) by nenny.nentec.de (8.11.3/8.11.3) with ESMTP id gBBAXut29629; Wed, 11 Dec 2002 11:33:56 +0100 Message-ID: <3DF71494.7040701@nentec.de> Date: Wed, 11 Dec 2002 11:33:56 +0100 From: Andy Sporner User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2a) Gecko/20020910 X-Accept-Language: en-us, en MIME-Version: 1.0 To: "Ronald G. Minnich" Cc: "Rouzer, Charles A (Chuck)" , freebsd-cluster@FreeBSD.ORG Subject: Re: sharing files within a cluster References: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: by AMaViS-perl11-milter (http://amavis.org/) Sender: owner-freebsd-cluster@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG I think here there needs to be made a distinction between farm computing such as Ron is talking about and he is then of course correct. However in a single-image environment these concepts are actually sort of desirable. Example if I have a process that is attached to shared memory, how can it migrate. It should be able to! The answer is to map the memory pages in a way so as to allow them to be swappable from node to node at the VM layer. Sequent used a Numa concept on their new machines (before IBM killed them) and I am very familiar with this approach. This allowed standard applications to run without modifications (such as Oracle)... Andy Ronald G. Minnich wrote: >On Tue, 10 Dec 2002, Rouzer, Charles A (Chuck) wrote: > > > >> Lets not put Linux down like that. ;-)) I like "Linux is the new Unix." >>better. ;-) >> >> > >I think FreeBSD would run all these Linux things just as well as Linux >does. I sure wish somebody would look at bproc for FreeBSD. > > > >>GlobalFS for potential ports would be a good start. I don't know anyone who >> >> > >"GlobalFS" in general is bad. global anything is bad. Consider Private >Name Spaces. > > > > >>- Process migration, cluster wide /proc, GlobalFS or Other (ClusterFS?), >> >> > >no, please check out Plan 9, cluster-wide /proc is not a good thing. At >most you want the bproc-style proc. > >Anything that involves global consensus is going to give you headaches. > > > >>- Scale to 100s of nodes. >> >> > >start at 1024. > > > >>- Cluster wide shared memory. >> >> > >eek. > >ron > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-cluster" in the body of the message > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-cluster" in the body of the message