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Subject: Re: TB cache size recommendations, please!

Author: Robert Hyatt

Date: 17:28:50 04/10/00

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On April 10, 2000 at 10:00:40, Stefan Meyer-Kahlen wrote:

>On April 10, 2000 at 09:00:39, Robert Hyatt wrote:
>
>>On April 10, 2000 at 06:10:22, Jouni Uski wrote:
>>
>>>Has anybody found good values for TB cache with 3+4 piece tablebases and 5 piece
>>>set (compressed Nalimov of course)? Is it different? Or is 4 MB always enough?
>>>Is same value good under Fritz and Winboard? thanks
>>>
>>>Jouni
>>
>>
>>Here is what I do on a machine with decent memory, assuming I am playing in
>>a tournament that is playing long time controls:
>>
>>memory=512mb
>>
>>hash=384M
>>hashp=32M
>>cache=32M
>>
>>which leaves 64M for the O/S and filecache buffers.
>>
>>works well for me.  In general, egtb cache is only important in egtb positions,
>>but then it is very important for performance.
>
>I haven't seen much difference for Shredder if I set the tb cache to 1 or 32 or
>256 MB. Any comments?
>
>Stefan


Depends on the position...  I ran several tests last year when Eugene first got
this stuff going, and I decided that for ICC level time controls, 32mb was a
good number.  I rarely see my NPS drop drastically.  It all depends on the
position and how many different databases are getting probed...



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