[Beowulf] Not all cores are created equal

John Hearns hearnsj at googlemail.com
Tue Dec 23 07:01:57 PST 2008


2008/12/23 Prentice Bisbal <prentice at ias.edu>

>  Regarding the issue handling interrupts and how that can affect
> performance is discussed in this paper, which determined that in
> multiprocessors systems, it's best to let one processor do all the
> interrupt handling (and nothing else)


Indeed.
SGI Altix have 'bootcpusets' which means you can slice off one or two
processors to take care of OS housekeeping tasks,
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