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Date: Sat, 7 Feb 2004 06:21:11 +0100
From: Andi Kleen <ak@suse.de>
To: "Martin J. Bligh" <mbligh@aracnet.com>
Cc: piggin@cyberone.com.au, linux-kernel@vger.kernel.org
Subject: Re: [Bugme-new] [Bug 2019] New: Bug from the mm subsystem involving
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On Fri, 06 Feb 2004 20:49:40 -0800
"Martin J. Bligh" <mbligh@aracnet.com> wrote:

> Not quite sure what you mean ... I was driving at pretending an SMP box
> was NUMA ... but the x86_64 is already NUMA ... are you grouping nodes
> together into single nodes with 2 cpus each?

There are Opteron boxes which are not NUMA. Or rather they are NUMA, but only
have a single node. Some of the cheaper boards only connect the DIMM
slots to a single CPU, which gives you only a single node even with
two CPUs. One of the test machines I have here is of this type. 

It's also useful for testing on simulators.

> Andi, do you already set up the mem allocation fallback zonelists like that?

I don't do anything special, it's all generic page_alloc.c logic.
 
-Andi