Author: Robert Hyatt
Date: 07:31:59 05/02/04
Go up one level in this thread
On May 02, 2004 at 08:37:49, Vincent Diepeveen wrote: >On May 01, 2004 at 22:36:35, Eugene Nalimov wrote: > >Show results. Show ignorance. Oops. You always do that so never mind... I'm sure Eugene's Itanium numbers are all made up. My opteron numbers are all made up, regardless of the log files I have put on my web site after last CCT event. All made up... Ever give any serious consideration to seeing a doctor or something??? You might. > >>On May 01, 2004 at 18:20:09, Vincent Diepeveen wrote: >> >>>On May 01, 2004 at 18:10:32, Robert Hyatt wrote: >>> >>>>On May 01, 2004 at 15:18:33, Joachim Rang wrote: >>>> >>>>>On May 01, 2004 at 15:06:24, Robert Hyatt wrote: >>>>> >>>>>>My results... on a quad 700mhz xeon >>>>>> >>>>>>1cpu 289 secs 1.0 speedup 294K nps >>>>>>2cpu 172 secs 1.7 speedup 571K nps >>>>>>3cpu 127 secs 2.4 speedup 833K nps >>>>>>4cpu 100 secs 2.9 speedup 1079K nps >>>>>> >>>>>>Unfortunately this machine was running nfs for the entire department so it >>>>>>wasn't totally idle, but the numbers seem within "reason" of what I would >>>>>>expect. Note also that I didn't run multiple runs and average the times, so >>>>>>there could be some random noise in the above as always... >>>>> >>>>>still below 3 even for such a SMP-Giant like Crafty. >>>>>For an 8-way machine what do you expect? >>>>> >>>>>regards Joachim >>>> >>>> >>>>My estimate is always speedup = 1 + (CPUS - 1) * .7 as a rough number. Some >>>>positions go higher, some go lower... >>>> >>>>So figure about 6x on 8-way... I have tested that myself. 16 and beyond are >>>>not so clear yet... >>> >>>8 ways are kind of NUMA, so forget it for crafty. >> >>As well as 32-way Itanium on which I tested Crafty some time ago... >> >>Thanks, >>Eugene
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