Messages in this thread | | | Date | 27 Apr 2004 04:33:27 +0200 | Date | Tue, 27 Apr 2004 04:33:27 +0200 | From | Andi Kleen <> | Subject | Re: sched_domains and Stream benchmark |
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> I noticed your binary ran with N=2000000 which is only sufficient for a > 2 proc 1 MB cache opteron box according to the documentation on the
It does not seem to make any difference.
> stream faq. I also noticed wide variation in results (25% or so) when > running with 4 threads on a 4 proc opteron on linux-2.6.5-mm5. Can you > provide me with the specs of the system you ran your tests on?
Yes, mm5 is still broken because it has the "tuned to numasaurus" numa scheduler. Run it on a standard (non mm*) kernel or with Ingo's early load balance patch.
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