Date: Wed, 11 Dec 2002 11:33:56 +0100 From: Andy Sporner <sporner@nentec.de> To: "Ronald G. Minnich" <rminnich@lanl.gov> Cc: "Rouzer, Charles A (Chuck)" <car@vitalit.com>, freebsd-cluster@FreeBSD.ORG Subject: Re: sharing files within a cluster Message-ID: <3DF71494.7040701@nentec.de> References: <Pine.LNX.4.44.0212101531170.1460-100000@carotid.ccs.lanl.gov>
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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
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