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Subject: Re: I AM THE KING OF THE WORLD - perft speed comparison!

Author: Sune Fischer

Date: 09:02:15 12/06/01

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On December 06, 2001 at 11:55:05, Severi Salminen wrote:

>>Hehe, nice. I can do it in 12 secs on the Athlon, but apparently I get too many
>>positions so I am disqualified.
>>I don't check for castle rights because it can't be done in 6 plies anyway. King
>>captures checks are on, but I've diabled the sorting of moves so it will iterate
>>deeper and count more nodes before it discovers the positions was actually
>>illegal to begin with :(
>>It will cost some speed to sort the moves and fix it, of cause a linear search
>>would be enough, I just have to check for the king capture. But I can't do perft
>>7 anyway without some attack bitboards to check the castle stuff, so I surrender
>>;)
>
>And if we did only perft 1, I could remove everything but pawn and knight
>portions from move generation and makemove functions ;) That would be fast! And
>actually I could pre-compute all these positions and then just copy them to
>board structure! I'd be VERY fast! But yes, you are disqualified if you don't
>chech castling rights, so: I AM THE KING, AGAIN!

LOL, you rule!!!

>Or maybe we are after all
>comparing apples and oranges: everyone is doing something different so we can't
>compare the figures.
>
>Severi "King" Salminen

Yes that's what I figure, after all it is about getting the overall performance
high, not just one part of the program.

-S.



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