Facilities Requirements for Beowulf Clusters?

[Cezary Czaplewski]

Hi, 

We have 55 dual PIII 650 nodes in quite small room (to be precise part of
bigger room which divided by two metal cabinets into small 'computer room'
and a workplace with a few desks and desktop computers). While staying
close to the rack you can feel heat produced by all these computer,
maximum CPU's temperature as measured using lm-sensor is around 55C. As
the limit in Intel's documents is 82C for 650 MHz CPU I think it is OK.
Earlier this room had been kept around 22C, after setting up cluster I
asked to increase air flow for A/C in this room and it was enough not to
overheat CPU's.

				czarek 

> I realize I can calculate the power requirements and compare them
> to what's available in the room, but A/C is a little tougher.  Have
> any of you tried jamming 16 to 32 nodes in a small room that's typically 
> kept at around 22C (72F) with any success?  I hear about a number of
> medium-sized systems like the one I'm getting ready to acquire, 
> and I wonder if people are really going all out to spend extra
> bucks on the facilities?
> 
> Thanks,
> 
> Don Morton
> -- 
>    Don Morton                     http://www.cs.umt.edu/u/morton/
>    Department of Computer Science       The University of Montana
>    Missoula, MT 59812 | Voice (406) 243-4975 | Fax (406) 243-5139
> 
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