Author: Vincent Diepeveen
Date: 05:37:49 05/02/04
Go up one level in this thread
On May 01, 2004 at 22:36:35, Eugene Nalimov wrote: Show results. >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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