[Beowulf] RE: Capitalization Rates - How often should you replace a cluster? (resent - 1st sending wasn't posted ).

Lux, James P james.p.lux at jpl.nasa.gov
Tue Jan 20 09:34:40 EST 2009




On 1/19/09 11:14 PM, "Jon Aquilina" <eagles051387 at gmail.com> wrote:

> in all honesty is there a need really to replace the cluster. why not just add
> onto it?
>

1) If all the processors work at the same speed, it's "easier" to distribute
work among them, especially if there are synchronization steps periodically,
where all the work quanta need to be aligned and redistributed for the next
step.

2) Newer machines do more computing/kWh of electricity, in general, so it
reduces operating costs.



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