[Beowulf] scaling SPECint_base2000 for harpertown
tom.elken at qlogic.com
Wed Nov 21 12:01:39 EST 2007
> [mailto:beowulf-bounces at beowulf.org] On Behalf Of andrew holway
> I recently got SPECint_base2000 figures from intel for
> harpertown using low optimisation flags (-O2 -pthread -fPIC).
> This benchmark is commonly used in particle physics circles
> to provide a common base.
> I was expecting the numbers to scale pretty much exactly but
> if you look at the link below the faster the chip the more
> SPECint_base2000 you get per GHz.
> Is this expected? These are aggregate figures for a dual
> socket machine with 1.5GB ram per core.
>From what I can interpret, this URL shows SPECint_base2000 = 11751
for a 3.0 GHz Harpertown at -O2 optimization.
The highest result on the SPEC website for SPECint_base2000 I could find
is 3108 with full optimization (-fast +FDO, etc.). 3.0 GHz Harpertown
is almost surely faster than that "Precision Workstation 390 (Intel Core
2 Extreme processor X6800, 2.93 GHz)" that achieved the 3108, but not by
a factor greater than 3.
How did you come up with the 11751 score?
If you were running SPECint_rate_base2000 at 8 cores, at full
optimization, the score would likely be in the 200-300 range.
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