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Subject: Re: Hash Tables in CB Tiger GUI - Another Question

Author: Slater Wold

Date: 18:32:09 10/03/01

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On October 03, 2001 at 17:36:33, Ian Aston wrote:

>
>The penny has finally dropped and I have just realized that you mean the
>Fritz 5.32 engine and not an old Fritz 5.32 GUI. I got a bit of a shock to
>see that it only takes about a minute to fill a 128MB hash allocation on
>my 1.3 mhz AMD. This means that if I play a 40/120 tournament game, between
>say Fritz and Junior, then my 512 MB total memory is probably not enough to
>give these engines all the hash tables they can use. As I don't have the
>patience to use this time control, I won't be rushing out to buy some more
>memory :)

You are right.  They fill faster than most people think.

>
>My question is :-
>
>Is it fair to equate NPS to hash table size for all engines. For arguments sake,
>if Fritz is getting 1 million NPS and Tiger 350K NPS, will Tiger only use
>35% of the hash tables that Fritz uses or do some engines use significantly more
>bytes per entry than others? If I can get the answer to this question then
>perhaps I can set the hash table sizes more efficiently.

YES!  My Deep Shredder gets about 600k nps, and I can fill 256MB hash in about
1:15.  I can fill 818MB of hash using Fritz 5.32 in about 2:50.

Anything over 5/0, I usually use 512MB.

>
>Thanks
>
>IA
>
>
>
>On October 02, 2001 at 19:02:38, Slater Wold wrote:
>
>>On October 02, 2001 at 18:57:40, Ian Aston wrote:
>>
>>>Does anyone know if it is possible to force the CB Tiger GUI to display the
>>>percentage of the allocated hash tables that it has filled.
>>>According to help, the time display sometimes displays this information but I
>>>have yet to see it.
>>>
>>>Thanks
>>>
>>>IA
>>
>>Those help files where written for Fritz 5.32.  And if you put it on Fritz 5.32,
>>it will show you this.
>>
>>But for 99.9% of the new engines, there isn't anyway to tell.
>>
>>
>>
>>Slate



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