Uptime data/studies/anecdotes ... ?

[Richard Walsh]

All,

What information is available on typical uptimes
of large-scale, clusters ... say greater than 256
processors and running a multi-user workload. What
gains do single-point-of-administration tools like
SCYLD provide?  Clearly, there are a great number
of things one can do to maximize uptime/utilization
(not the same thing really).  What are the essentials 
from the lists point of view? 

If a good figure is, say, 80% utilization over a 
8760 hour year today, what will this number be in 
three years?  Annual utilization for the 1088 processor 
T3E we run here is about 95%.  How long until a similarly
sized cluster typically yields the same value?

Regards,

rbw

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# Richard Walsh
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