linux-kernel - Re: [PATCH] x86: Consider multiple nodes in a single socket to be "sane"

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Message-ID: <20140916160134.GB2848@worktop.localdomain>
Date:	Tue, 16 Sep 2014 18:01:34 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Chuck Ebbert <cebbert.lkml@...il.com>
Cc:	Ingo Molnar <mingo@...nel.org>, Dave Hansen <dave@...1.net>,
	linux-kernel@...r.kernel.org, borislav.petkov@....com,
	andreas.herrmann3@....com, hpa@...ux.intel.com, ak@...ux.intel.com
Subject: Re: [PATCH] x86: Consider multiple nodes in a single socket to be
 "sane"

On Tue, Sep 16, 2014 at 02:03:00AM -0500, Chuck Ebbert wrote:
> Hmm, looking closer at the diagram, each ring has its own memory controller, so
> it really is NUMA if you break the interconnect between that caches.

How does it do that? Does it split the DIMM slots in two as well, with
half for the one node and the other half for the other? Or will both
'nodes' share the same local memory?

In the first case its full NUMA, in the second case, not so much.
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