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Subject: Re: Why max Hashtable Limit for Fruit is 1024 ?

Author: Günther Simon

Date: 11:07:36 11/23/05

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On November 23, 2005 at 13:52:51, chandler yergin wrote:

>On November 22, 2005 at 02:35:15, Alexander Ermolenko wrote:
>
>>Why max Hashtable Limit for Fruit is 1024 ?
>
>It's based on the Optimum amount set by the speed of your Processor.
>In the Analysis Window 'right click' on the Engine, use menu and click on
>parameters, it will tell you the Maximum Hash allowed for your system.

No, this is an internal limit of Fruit and the option line
for this was already posted here. It has nothing to do of course
with any persons system.

'option name Hash type spin default 16 min 4 max 1024'

You can verify this for yourself by starting the Fruit.exe itself
(e.g. double clicking). Type UCI and you will see all options,
which can be changed and their default values:
(I choose 2.1 here, because my test version of 2.21 on this machine
was running out of time, the hash option is identically)

Guenther

uci
id name Fruit 2.1
id author Fabien Letouzey
option name Hash type spin default 16 min 4 max 1024
option name Ponder type check default false
option name OwnBook type check default true
option name BookFile type string default book_small.bin
option name NullMove Pruning type combo default Fail High var Always var Fail
High var Never
option name NullMove Reduction type spin default 3 min 1 max 3
option name Verification Search type combo default Endgame var Always var
Endgame var Never
option name Verification Reduction type spin default 5 min 1 max 6
option name History Pruning type check default true
option name History Threshold type spin default 60 min 0 max 100
option name Futility Pruning type check default false
option name Futility Margin type spin default 100 min 0 max 500
option name Delta Pruning type check default false
option name Delta Margin type spin default 50 min 0 max 500
option name Quiescence Check Plies type spin default 1 min 0 max 2
option name Material type spin default 100 min 0 max 400
option name Piece Activity type spin default 100 min 0 max 400
option name King Safety type spin default 100 min 0 max 400
option name Pawn Structure type spin default 100 min 0 max 400
option name Passed Pawns type spin default 100 min 0 max 400
uciok



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