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Subject: Re: Which CPU should I buy??

Author: Chessfun

Date: 11:29:18 11/04/05

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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.




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