Author: Robert Hyatt
Date: 21:04:49 05/01/04
Go up one level in this thread
On May 01, 2004 at 22:36:35, Eugene Nalimov wrote: >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 You should realize that our pitiful knowledge pales in the presence of the world's foremost authority on everything. I really don't see why anyone would enter a tournament where his program plays since they have no chance against his. Wait. Has he ever won one for real? Wait again. Seems that ICC is broken in that it shows that crafty vs diep has looked like this (from crafty's perspective): 468 wins. 156 losses. 166 draws. So maybe there _is_ hope for the rest of us??? I've never seen anyone that knows so much about everybody _else's_ programs. Or at least that _thinks_ he knows so much about everybody else's programs... Fortunately the reality of actually playing in events catches up with the fantasy-land claims and pronouncements...
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