Author: Gregory Owett
Date: 11:51:07 11/04/05
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On November 04, 2005 at 14:29:18, Chessfun wrote: >On November 04, 2005 at 14:23:44, Gregory Owett wrote: > >>On November 04, 2005 at 07:13:03, Chessfun wrote: >> >>>On November 04, 2005 at 06:04:34, Greg Simpson wrote: >>> >>>>Tablebase access can easily saturate the disk IO, so having two engines using >>>>them at once could be a problem. You could buy a small second hard disk and >>>>store a copy of the tablebases there and avoid this problem by directing one >>>>engine to use the tablebases on the main disk and the other the tablebases on >>>>the secondary disk. >>>> >>>>Other than tablebases, there should be some slow down from memory bus contention >>>>when two engines are running, mostly from hash table access I guess (hard to >>>>cache). I don't think think this would be a big issue for the X2 processors, >>>>but like you I would be interested if anyone could provide some real data. >>>> >>>>If you don't want to run ponder on you could get a bigger benefit from the dual >>>>core system by running two matches at once. >>> >>>That is exactly what I am doing right now x2 4200+. Except with tablebases I >>>have identical 5 piece placed on the same drive. C:\Nalimov and C:\Nalimov 1 >>>told each program in options where to go and thus far no problem. Originally >>>probing the same folder C:\Nalimov was a problem. >>> >>>Haven't noticed any other problems. If the two interfaces are CB then you need >>>to install the path to bases different naturally when installing the software, >>>so you'll end up with two locations where the tournaments or matches are taking >>>place. >>> >>>Sarah. >> >>Hello Sarah, >> >>In my opinion, in the event of tournament this solution can also not function. >>Obviously, always on "ponder on". Don't you think so? >> >>Gregory > >Both mine are ponder=off so I'm not exactly sure I see what you are saying? > >Sarah. I want to say about different tablabases under different paths. In the case of several engines, the realization is rather difficult. Gregory
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