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Subject: Re: To: Robert Hyatt

Author: Robert Hyatt

Date: 18:46:21 07/24/00

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On July 24, 2000 at 19:50:54, John Coffey wrote:

>On July 24, 2000 at 09:14:43, Robert Hyatt wrote:
>
>>On July 24, 2000 at 07:29:03, Larry Griffiths wrote:
>>
>>>On July 23, 2000 at 21:59:58, Robert Hyatt wrote:
>>>
>>>>
>>>>This is on my list to fix, as it is not quite easy to search > 2B nodes and
>>>>wrap the counter around...
>>>
>>>I understand Robert :)
>>>
>>>Looks like I would have to combine my captures and moves into 1 bitboard to make
>>>my bruteforce faster if I want to compete with Crafty's perft command.
>>>Im sure that adding castleing and pawn promotion will slow my program down even
>>>more.
>>>
>>>Larry.
>>
>>There was a typo in my response.  "not quite easy" should be "now quite easy"
>>as searching over 1M nps will wrap the counter inside an hour.
>>
>>Castling and EP really shouldn't slow you down, as you will skip that code
>>most of the time.  Just make the "should I do this?" test as efficient as
>>possible so that it doesn't impact you when you can't castle, which is most of
>>the game...
>
>Please tell me what hardware allows you to search 1M nps?
>
>John Coffey


My quad xeon/550 will do it.  A 21264 (single cpu) will also do the trick.
(Alpha cpu)



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