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Subject: Re: Fine 70 hashing litmus test (was Re: Rehashing)

Author: Stuart Cracraft

Date: 19:31:22 01/23/98

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On January 23, 1998 at 15:00:17, Johanes Suhardjo wrote:

>Is there a minimum hash table size in order to pass this litmus test?
>I tried my program (2^17 hash entries) and it got stuck at Kb3.  I felt
>horrible.  Curious, I tried gnuchess-4.75 (default hash size) and it
>also
>stuck at Kb3.  Then I tried crafty-11.13 and crafty-14.4, same results.
>This is the output of crafty-14.4 after 35 plies:
>
>               35->   4:13   3.20   Kb3 Ka6 Kc2 Kb6 Kd2 Kc7 Kd3 Kb6 Ke3
>                                    Kc7 Kf3 Kd7 Kg3 Ke7 Kh4 Kf6 Kh5 Kf7
>                                    Kg5 Kg7 Kxf5 Kf7 Kg5 Kg7 f5 Kf7 f6
>                                    Kf8 Kf4 Ke8 Kg4 Kf8 Kg5 Ke8 Kg6 <HT>
>

Hmmm, don't know about that. K2 has only 102400 hash slots and
it didn't get stuck at Kb3.

I think you're having a problem other than the number of slots.
What is your replacement strategy for how table entries get
overwritten?

--Stuart




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