[Beowulf] A Cluster of Motherboard.

[Jim Lux]

At 07:20 AM 11/10/2005, Josip Loncaric wrote:
>Robert G. Brown wrote:
>>On Sat, 5 Nov 2005, oxylabtech at gmail.com wrote:
>>
>>>It would like to know if is possible to make a cluster of
>>>motherboards? I don't speaking in a cluster of PC's, but of
>>>motherboards. Somebody already saw? If it is possible, Could someone
>>>help me?



>><snip>



>>you pack things too close together without shielding you
>>could conceivably get some electrical oddities that destabilize things.
>
>A cheap bare case can cost less than $20 -- and can save you a lot of 
>work, although perhaps not shelf space.  For safety, ease of installation, 
>and FCC EM reasons, cheap metal cases should be considered.

Don't forget labor.. The case already has holes punched in it, and probably 
those nifty little plastic mounting standoffs, etc.  Do not underestimate 
the time it takes to drill 8 holes in each of 96 plates, insert the 800 
screws, put on a washer, find the nut that you dropped and is now rattling 
around.

The breakeven where the "mechanical hassle" factor becomes really annoying 
is probably in the dozen or so motherboard scale.


I once had to work on a system where we had several thousand lightbulbs to 
wire up.  Never again.



>Sincerely,
>Josip
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James Lux, P.E.
Spacecraft Radio Frequency Subsystems Group
Flight Communications Systems Section
Jet Propulsion Laboratory, Mail Stop 161-213
4800 Oak Grove Drive
Pasadena CA 91109
tel: (818)354-2075
fax: (818)393-6875