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Subject: Re: Perft vs Search Re: Cache size does matter

Author: Brian Richardson

Date: 06:18:53 12/04/05

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On December 03, 2005 at 22:21:20, Reinhard Scharnagl wrote:

>On December 03, 2005 at 22:14:20, Brian Richardson wrote:
>
>>How similar are perft and alpha/beta trees?
>>Can perft caching can really be used to guide PVS or other actual search
>>caching?
>
>The test was targeting to find a relation between intended thinking time and
>cache size. Thus the absence of specialized search strategies has been intended.
>
>Reinhard.

I thought perft just counts moves to a specified depth, so I'm not clear on what
"intended thinking time" means in this context.  Of course, this could just be a
minor ENFLI English not first language issue :)
[As in someone who knows 2 languages is bilingual, and 3 is trilingual, but only
1 language is an American]

Clearly, it is fair to say that caching does significantly impact perft time to
depth performance (although I suspect few engines use cache for perft).



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