Kevin N. Carpenter wrote:
> (1) SetiAtHome finishes in 6 hours, 51 minutes (not bad)
> (2) SetiAtHome's finish in 10 hours, 3 minutes (a 3 hour, 12 minute slowdown
> per instance)
>
> That implies to me about a 50% contention for memory between the two
> processors.
Right. And that depends on what you're trying to do. For example, on a
kernel compile, I get a performance level of about 170% of a single
processor. That means 30% memory contention.
And we know that SetiAtHome is a memory hog. My colleage takes
pleasure in running it, and thinks that it's acceptable to dedicate a
quarter of his RAM to that stuff. (You know, RAM, that
more-expensive-than-gold stuff that you put into the PC?)
Roger.
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