[Beowulf] Rear-door heat exchangers and condensation

Ivan Oleynik iioleynik at gmail.com
Tue Dec 9 07:09:51 PST 2008


What is the water rate requirement? Can it be fitted to any standard 42
rack, not only SGI made? How much did it cost (rough estimate would



On Tue, Dec 9, 2008 at 9:52 AM, John Hearns <hearnsj at googlemail.com> wrote:

> 2008/12/9 Kilian CAVALOTTI <kilian.cavalotti.work at gmail.com>
>> Hi all,
>> I'd be curious to know if some of you use or have some real-life
>> experience
>> with rear-door heat exchangers, such as those from SGI [1] or IBM [2].
> Killian, yes indeed. I manage both an SGI Altix with the rear-door heat
> exchangers, and an ICE cluster.
> We are lucky enough to have our own lake for a cooling pond. Grin.
> I think these are the cat's pyjamas - the SGI ones come in four horizontal
> 'stable doors' so you can swing one open for an extended amount of time to
> work on the rear of systems without overheating the whole rack.
> They enable us to run machines in some reasonably small spaces, and have
> been reliable.
> Contact me off-list please for temperature notes.
> John Hearns
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