Author: Chessfun
Date: 12:19:48 11/04/05
Go up one level in this thread
On November 04, 2005 at 14:51:07, Gregory Owett wrote: >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 Well as I said I have not noticed any problems. I have looked at all engines in task manager during tablebase probing by two engines and see nothing odd. I can move one set to a second drive and maybe it's wise to simply do that. Sarah.
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