From: Jesse Barnes <jbarnes@engr.sgi.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Lhns-devel] Re: Who's doing what with cpu/memory/node hotplug?
Date: Fri, 14 May 2004 02:09:56 +0000 [thread overview]
Message-ID: <200405131909.56934.jbarnes@engr.sgi.com> (raw)
In-Reply-To: <20040513150842.22F5.YGOTO@us.fujitsu.com>
On Thursday, May 13, 2004 6:28 pm, Dave Hansen wrote:
> I don't see any real reasons why we can't make I/O only nodes. I know
> that we've run into and fixed a few situations where a node came up with
> either no cpus or no memory for various reasons before. Does anybody
> have any philosophical objections to having I/O only nodes?
Well, it's kind of odd conceptually (to me a node implies memory) but SGI has
such nodes. They're simply numalink<->pci bridges, and as such are
individually addressable and have physical NUMA node ids.
> In any case, I'd bet we'll need some form of this eventually. On my
> hardware, It's probably possible to hotplug individual CPUs or sections
> of memory in such a way that a node has no online cpus or memory. So,
> we'll probably have to handle those cases anyway.
Yep, I suppose so.
Jesse
next prev parent reply other threads:[~2004-05-14 2:09 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-14 0:13 [Lhns-devel] Re: Who's doing what with cpu/memory/node hotplug? Yasunori Goto
2004-05-14 1:06 ` Paul Jackson
2004-05-14 1:28 ` Dave Hansen
2004-05-14 2:09 ` Jesse Barnes [this message]
2004-05-14 3:02 ` Keiichiro Tokunaga
2004-05-14 3:21 ` Dave Hansen
2004-05-17 2:34 ` Kenji Kaneshige
2004-05-17 5:31 ` Dave Hansen
2004-05-17 7:35 ` Matthias Fouquet-Lapar
2004-05-17 8:23 ` Dave Hansen
2004-05-17 8:38 ` Matthias Fouquet-Lapar
2004-05-17 15:45 ` Grant Grundler
2004-05-17 15:52 ` Dave Hansen
2004-05-17 16:00 ` Ashok Raj
2004-05-17 19:15 ` Matthias Fouquet-Lapar
2004-05-17 23:01 ` Matthew Dobson
2004-05-17 23:18 ` Luck, Tony
2004-05-17 23:28 ` Dave Hansen
2004-05-17 23:36 ` Jesse Barnes
2004-05-17 23:54 ` Grant Grundler
2004-05-18 20:16 ` Ashok Raj
2004-05-18 21:01 ` Jack Steiner
2004-05-18 21:05 ` Andi Kleen
2004-05-18 21:12 ` Greg KH
2004-05-19 5:25 ` Matthias Fouquet-Lapar
2004-05-19 9:17 ` Paul Jackson
2004-05-19 9:30 ` Matthias Fouquet-Lapar
2004-05-19 10:22 ` Paul Jackson
2004-05-19 14:40 ` Howell, David P
2004-05-19 14:56 ` Matthias Fouquet-Lapar
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