linux-kernel - Re: [PATCH 00/10] x86: Reduce memory and intra-node effects with large count NR

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Message-ID: <Pine.LNX.4.64.0801161006000.9061@schroedinger.engr.sgi.com>
Date:	Wed, 16 Jan 2008 10:07:36 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Nick Piggin <nickpiggin@...oo.com.au>
cc:	Andi Kleen <ak@...e.de>, Ingo Molnar <mingo@...e.hu>,
	travis@....com, Andrew Morton <akpm@...ux-foundation.org>,
	Jack Steiner <steiner@....com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/10] x86: Reduce memory and intra-node effects with
 large count NR_CPUs

On Wed, 16 Jan 2008, Nick Piggin wrote:

> Oh, just while I remember it also, something funny is that MAX_NUMNODES
> can be bigger than NR_CPUS on x86. I guess one can have CPUless nodes,
> but wouldn't it make sense to have an upper bound of NR_CPUS by default?

There are special configurations that some customers want which involves 
huge amounts of memory and just a few processors. In that case the number 
of nodes becomes larger than the number of processors.

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