> -----Original Message----- > [mailto:[EMAIL PROTECTED] On Behalf Of Tom Elken > Sent: Wednesday, November 21, 2007 9:02 AM > To: andrew holway; Beowulf Mailing List > Subject: RE: [Beowulf] scaling SPECint_base2000 for harpertown >
> > http://www.moonet.co.uk/2004 > > >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.). > > How did you come up with the 11751 score? Andrew and I exchanged some private e-mails and here is where it came from: Someone from Intel ran SPECint with gcc/g++ using low optimisation flags (-O2 -pthread -fPIC) on one core of the system(s). Then they multiplied the result by the # of cores, 8, to come up with the 11751 score on the 3 GHz CPU. Note that this NOT what the SPEC rate benchmark would do -- SPEC rate would run 8 copies simultaneously and time the slowest completion of each benchmark -- and the score is on a different scale than SPECint_rate_base2000 uses. But if you interpret it as a measure of single core performance and not full system performance, it's fine. -Tom > > If you were running SPECint_rate_base2000 at 8 cores, at full > optimization, the score would likely be in the 200-300 range. > > Cheers, > -Tom Elken > > > > > > Cheers > > > > Andy > > _______________________________________________ > > Beowulf mailing list, Beowulf@beowulf.org To change your > subscription > > (digest mode or unsubscribe) visit > > http://www.beowulf.org/mailman/listinfo/beowulf > > > > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org To change your > subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf > _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
