Author: Uri Blass
Date: 12:50:12 07/23/04
Go up one level in this thread
On July 23, 2004 at 11:25:20, Uri Blass wrote: >On July 23, 2004 at 11:11:27, Jorge Pichard wrote: > >>On July 23, 2004 at 06:37:58, Uri Blass wrote: >> >>>On July 23, 2004 at 06:19:02, Joachim Rang wrote: >>> >>>>On July 22, 2004 at 12:56:49, Uri Blass wrote: >>>> >>>>>Conditions: >>>>> >>>>>Jonny 256 mbytes hash >>>>>Movei 64 mbytes hash(I suspect that more than it is counter productive for all >>>>>time controls and even 64 mbytes is counterproductive for fast time control >>>>>except very fast time control of 3 minutes per game or faster because in very >>>>>fast time control movei does not waste time on clearing the hash because it >>>>>assumes that it has no time for it and the old entries in the hash are still >>>>>productive for better order of moves and movei does not suffer much from useless >>>>>entries) >>>>> >>>>>Hardware A64 3000(2ghz) >>>>> >>>>>Movei-Jonny 36.5-13.5 at 1 minutes per game >>>>>Movei-Jonny 34.5-15.5 at 2 minutes per game >>>>>Movei-Jonny 33.5-16.5 at 3 minutes per game >>>>>Movei-Jonny 27-23 at 4 minutes per game >>>>>Movei-Jonny 23.5-26.5 at 10 minutes per game >>>>>Movei-Jonny 2.5-3.5 at 20 minutes per game >>>>> >>>>>games played under winboard. >>>>>It seems that Movei is simply weaker at long time control and it is not >>>>>surprising because it has poor order of moves and bad use of hash tables. >>>>> >>>>>The surprise that I have so far is the good results of it in WBEC. >>>>> >>>>>Uri >>>> >>>> >>>>what is a bit disturbing it, that you gave different Hash to different >>>>opponents. As you wrote 256 MB is more than enough for a 1 0 game and perhaps >>>>even hurts Jonny in the fast games (just a speculation). >>>> >>>>regards Joachim >>> >>>Based on watching some games it did not seem to me that big hash hurted Jonny(it >>>is not a program that clears it's hash after it's moves and I believe that it >>>did not lose games on time but I will check later). >> >> >>I used 64 Mb of hash for Jonny at blitz and it did great at Blitz, but at longer >>time control game in 5 hours I'm giving Jonny 256 MB. >> >> >>Jorge > >I cannot treat the match when Aristarch searched 2 plies seriously. >No engine searched 2 plies in the match of movei against Jonny. > >I guess that 64 mbytes or 256 mbytes does not change much in blitz for Jonny but >the author may give better opinion about it. > >I think that Movei does not get advantage from more than 64 mbytes at long time >control. > >I do not know what is the optimal hash for movei but I guess that at some point >adding more hash may be counter productive even without considering time to >clear hash because of some other history based pruning. > >Uri Unfortunately I have some bad news and I will not know results of the match before sunday. There was a power failure in the office that I put the computer(unfortunately power failures happen often in that office and I guess the average is one time per week in the last month). It is weekend so there is nobody in the office and people will not be there even tomorrow. I also got an advice not to try to fix things by myself in the past so I will not be able to see information about this match before sunday. I also will not be able to get emails before sunday in the usual address and if people want to send me an important email they can send it to my hotmail account uuu0123@hotmail.co.il Uri
This page took 0 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.