Messages in this thread | | | Date | Thu, 3 Dec 1998 11:33:59 GMT | From | "Stephen C. Tweedie" <> | Subject | Re: SMP scalability: 8 -> 32 CPUs |
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Hi,
On 03 Dec 1998 12:01:56 +0100, Jes Sorensen <Jes.Sorensen@cern.ch> said:
> I am not sure I understand you right here, on the O2000 you can either > run the whole box as a single image or I _think_ partition it and run > multiple instances of IRIX on it (I think IRIX 6.5 allows this at > least, maybe I'm wrong).
SSI (single system image) != SMP (_symmetric_ multiprocessing, where all memory is always the same distance from each CPU). Non-symmetric memory architectures are NUMA, but that's not necessarily SMP (it depends on just how relaxed your definition of SMP is, and some vendors get pretty relaxed about it).
Even clusters can present a single system image, but they are most definitely not SMP systems.
--Stephen
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