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Date: Mon, 20 Jan 2003 18:04:36 +0100 (CET)
From: Ingo Molnar <mingo@elte.hu>
Reply-To: Ingo Molnar <mingo@elte.hu>
To: Erich Focht <efocht@ess.nec.de>
Cc: Michael Hohnbaum <hohnbaum@us.ibm.com>,
       "Martin J. Bligh" <mbligh@aracnet.com>,
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Subject: Re: [patch] sched-2.5.59-A2
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On Mon, 20 Jan 2003, Ingo Molnar wrote:

> ie. SMP is just the first level in the cache-hierarchy, NUMA is the
> second level. (lets hope we dont have to deal with a third caching level
> anytime soon - although that could as well happen once SMT CPUs start
> doing NUMA.)

or as Arjan points out, like the IBM x440 boxes ...

i think we want to handle SMT on a different level, ie. via the
shared-runqueue approach, so it's not a genuine new level of caching, it's
rather a new concept of multiple logical cores per physical core. (which
needs is own code in the scheduler.)

	Ingo

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