Author: Robert Hyatt
Date: 12:33:19 08/30/04
Go up one level in this thread
On August 30, 2004 at 14:51:01, Uri Blass wrote: >On August 30, 2004 at 13:51:48, Robert Hyatt wrote: > >>On August 30, 2004 at 12:24:54, Volker Böhm wrote: >> >>>On August 30, 2004 at 10:02:54, Robert Hyatt wrote: >>> >>>>On August 30, 2004 at 08:30:34, Kurt Utzinger wrote: >>>> >>>>>On August 30, 2004 at 08:12:52, Jouni Uski wrote: >>>>> >>>>>>Eine FPGA-Karte untersucht momentan ca. 3 Millionen Positionen/Sekunde. 16 >>>>>>Karten machen daher theoretisch 48 MPos/sec. (Donninger) >>>>>> >>>>>>Jouni >>>>> >>>>> If Hydra made 48 Mpos/sec this again proves (in comparison >>>>> with the 2 Mpos/sec on Quad-Opteron server with 4 CPU's of >>>>> Shredder) that the number of pos/sec can't be taken as a >>>>> reliable value for the goodness of a chess program. It's >>>>> of course simply impossible to compare apples and organes. >>>>> Kurt [http://www.utzingerk.com] >>>> >>>> >>>>Don't forget that Hydra ripped Shredder's head off. So the NPS _might_ be >>>>significant here... >>> >>>Didn´t I´ve heard you saying that 10 games are not enough to draw a >>>statistically significant conclusion on the playing strength? >>> >>>Greetings Volker >> >> >>With two _close_ opponents, correct. But if one is seriously stronger, as hydra >>appeared to be, 10 games is plenty. > >We do not know if hydra is seriously stronger. We have a pretty good clue that it is. It is over 10x faster, potentially, than other programs. 1. I first assume that the programmer / designer is no dummy. 2. all else being "equal" 10x faster is a _serious_ advantage. 3. the above two points translate into a signficant strength advantage. > >You cannot start by assuming that hydra is significantly stronger when this is >the question. With evidence, you can. IE I can certainly assume that Crafty on an 8-way opteron is significantly stronger than Crafty on my dual xeon. > >If you see 10-0 you can say based on the result that Hydra is significantly >stronger but when you see 5.5-2.5 you cannot claim it based on the result and >you only can say that you do not know if it is significantly stronger based on >the result. > If you only look at the results, maybe or maybe not. But I watched many of the games with Crafty analyzing. That tells you even more. >Uri
This page took 0.01 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.