From mboxrd@z Thu Jan 1 00:00:00 1970 From: Erich Focht Date: Mon, 08 Nov 2004 16:30:37 +0000 Subject: Re: removing mm->rss and mm->anon_rss from kernel? Message-Id: <200411081730.37906.efocht@hpce.nec.com> List-Id: References: <4189EC67.40601@yahoo.com.au> <226170000.1099843883@[10.10.2.4]> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Christoph Lameter Cc: "Martin J. Bligh" , Nick Piggin , Benjamin Herrenschmidt , Hugh Dickins , linux-mm@kvack.org, linux-ia64@vger.kernel.org On Monday 08 November 2004 17:04, Christoph Lameter wrote: > Nope. The future of computing seems to be very high numbers of cpus. > NASAs Columbia has 10k cpus and the new BlueGen solution from IBM is > already at 8k. You're talking about clusters, i.e. multiple running instances of the operating system. I don't think anybody really wants to go far beyond 512 nowadays. Application-wise 512 cpus/node isn't really needed (but sometimes nice to have, for marketting). Beyond problems with scalability of the interconnect (and very uneven latency distribution) bigger systems would accumulate a too small MTBF. When a broken CPU, DIMM or other chip takes your entire >1k CPU-machine down, you'll hapilly exchage it agains a cluster. Erich