[Beowulf] Servers Too Hot? Intel Recommends a Luxurious Oil Bath

Prentice Bisbal prentice.bisbal at rutgers.edu
Wed Sep 5 06:54:55 PDT 2012

On 09/05/2012 06:22 AM, Eugen Leitl wrote:
> On Tue, Sep 04, 2012 at 02:54:46PM -0400, Ellis H. Wilson III wrote:
>> I know we've been taking things to the uber-scale level with this
>> conversation, but does anyone have suggestions for small (homebrew
>> Beowulf) clusters?  I've considered oil before, but for all the
> A major advantage of these forthcoming ARM server systems is that
> they are air-coolable, and in fact even convection-aircoolable,
> if you add a suitable funnel on top of the rack.
Existing systems are already air-cooled by convection.  Anything that is 
being cooled by the movement of air is convection* When we use fans in 
our servers, it's forced convection. Did you mean natural convection, 
where there the air density difference (caused by the temperature 
difference) causes the movement of air, without any fans?

Where does the funnel come in? To reduce drag that would hinder the 
natural convection?

Sorry - I spent waaaay too much time studying transport phenomena in 

* For the science nerds: Technically, convection is heat transfer by 
flow of any fluid.


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