linux-kernel - Re: [Ksummit-2010-discuss] checkpoint-restart: naked patch

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Message-ID: <20101118095300.3ea74268@lxorguk.ukuu.org.uk>
Date:	Thu, 18 Nov 2010 09:53:00 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Anton Blanchard <anton@....ibm.com>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	ksummit-2010-discuss@...ts.linux-foundation.org
Subject: Re: [Ksummit-2010-discuss] checkpoint-restart: naked patch

> The problems found in HPC often turn into more general problems down
> the track. I think back to the heated discussions we had around SMP back
> in the early 2000s when we had 32 core POWER4s and SGI had similar sized
> machines. Now a 24 core machine fits in 1U and can be purchased for
> under $5k. NUMA support, CPU affinity and multi queue scheduling are
> other areas that initially had a very small user base but have since
> become important features for many users.

	I'd prefer the trees to be separate for testing purposes: it 
	doens't	make much sense to have SMP support as a normal
	kernel feature when most people won't have SMP anyway"
			-- Linus Torvalds


Only in this case I can't help feeling that the virtualisation work
already bypassed C/R, solved the problem space that a lot of people care
about and then moved on.

Alan
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