Author: Joachim Rang
Date: 01:47:52 11/16/04
Go up one level in this thread
On November 16, 2004 at 04:38:57, Günther Simon wrote: >On November 16, 2004 at 03:16:35, Joachim Rang wrote: > >>On November 16, 2004 at 01:46:47, Kurt Utzinger wrote: >> >>>On November 15, 2004 at 15:42:01, Albert Silver wrote: >>> >>>>On November 15, 2004 at 13:37:01, Kurt Utzinger wrote: >>>> >>>>>Nunn2 match (60m+10s) 40 games >>>>>Pro Deo 1.0 vs Fritz 8.0.0.26 >>>>>http://www.utzingerk.com/pro_deo.htm >>>>> >>>>>A little test should show the influence of the option [clear hash table = >>>>>always] and [clear hash table = never]. Below the result against Fritz 8 as Pro >>>>>Deo had the worst result against this engine: >>>>> >>>>>Option [Clear Hash Table = Always] >>>>>PD = 32.5 % >>>>>13.0 - 27.0 >>>>> >>>>>[Clear Hash Table = Never] >>>>>PD = 36,2 % >>>>>14.5 - 25.5 >>>> >>>>I ran some Nunn2 blitz matches as you know, with and without, and the results >>>>were not clear. Against Aristarch and Ruffian the results were better, and >>>>against List, PD scored 1 point less. >>>> >>>> Albert >>> >>> >>> Hi Albert >>> Is it worth to replay all remaining 280 games >>> at time control 60m+10s with clear hash table >>> = never http://www.utzingerk.com/pro_deo.htm >>> Kurt >> >> >>why should clear Hash Table = Never be an improvement? ProDeo looses important >>information when it clears the hashtable? Why is this option tested? Did Ed >>mention that he is not clear whether it helps or not? >> >>regards Joachim > >Hi Joachim, > >You sure meant 'clear hash table = always' in your statement above? >The reason for not using that option is that ProDeo seems to have some >kind of hashtable bug and sometimes plays weird blunder moves from >the hashtable. (users reported such blunders here) >I have experienced such blunders too in RWBC so far, nevertheless I still >use 'never', as Ed suggested this in relief that the overall success >should be better, even with some occasional big blunders. > >Best regards, >Günther Yes Günther you are right. I confused Never/Always. The only think I can imagine clearing the hashtables should help is if there is a bug, like you Uri and other mentioned. I didn't know that there are suspicions of such a bug in Rebel. regards Joachim
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