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Subject: Re: How is Hydra faster and better than Deep Blue?

Author: Ricardo Gibert

Date: 00:15:33 05/31/05

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On May 30, 2005 at 12:46:24, Ricardo Gibert wrote:

>On May 30, 2005 at 11:32:48, Bo Persson wrote:
>
>>On May 30, 2005 at 06:16:02, Joost Buijs wrote:
>>
>>>40 mln nodes /sec. is for the old Hydra-Chimera.
>>>
>>>The new Hydra-Scylla is much faster. I saw it run at 130 mln nodes/sec. on
>>>several occasions. So the speed of Hydra is roughly comparable with the speed of
>>>Deeper Blue.
>>
>>That's not an accurate comparison. Deep Blue's 200M nodes/s where an average
>>number. It was seen to peek at 1 billion nodes/s "on several occations".
>
>Average          120M NPS
>Practical Peak   200M NPS
>Theoretical Peak   1B NPS
>
>You will [find]


>conflicting information on this even in his book, but the above is
>correct as per Hsu.
>
>>
>>>
>>>The search of Hydra is much more advanced. The software part of Deep Blue was
>>>probably nothing more than a souped up version of GNU-Chess.
>>
>>The Deep Blue teem chose not to complicate the search too much, because their
>>speed advantage was big enough anyway at the time.
>>
>>
>>Bo Persson



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