Author: Christophe Theron
Date: 00:11:50 04/27/01
Go up one level in this thread
On April 26, 2001 at 23:52:17, Thomas Scherk wrote:
>>On this computer I would recommend 192Mb hash tables and 32Mb TB cache.
>>
>>But please make sure that this setting does not slow the program down
>>dramatically. It depends on your system, so please try with for example one
>>middlegame position and one deep endgame position.
>>
>>Try with 64Mb HT and 192Mb HT. Set up the program to reach a fixed depth on your
>>middlegame position. If the NPS is almost the same with 64Mb and 192Mb, then
>>it's OK to use 192Mb HT.
>>
>>Then set the HT to 192Mb (if it is OK), then load the endgame position. Same
>>experiment at fixed depth, but this time with 1Mb TB cache and 32Mb TB cache.
>>
>>But that's a very classical way to test these things, I'm sure you are used to
>>this procedure already.
>>
>>
>>
>> Christophe
>
>Dear Christophe,
>
>I think Bertil tells us, that the Computer has 256 MB. Depending on the OS, he
>is using, and depending on the loading of some drivers, maybe Ethernet, Sound,
>VGA with high resolution and 32 Bits depth Colour, there will be only about 180
>MB left from these 256 MB.
>
>You write "...same with 64 MB and 192 MB...". Is this right? I was told by
>ChessBase that you can use any amount of hashtables but it must be an amount
>computed with the formula 3*2^n MB. Is this right?
>
>Regards, Thomas
Yes you are right. Tiger cannot use 64Mb of HT. It is either 48Mb or 96Mb.
Sorry, my mistake.
It is true that depending on what is loaded, maybe 192Mb will not be available.
So it is important to test before you give Tiger 192Mb of hash tables.
It is possible that only 96Mb will work.
The same problem will happen with other chess programs actually.
Christophe
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