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Subject: Re: What kind of difference will the Xeon's with 2MB of Cache make?

Author: Dann Corbit

Date: 18:39:20 01/24/02

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On January 24, 2002 at 21:15:26, Tom Kerrigan wrote:

>On January 24, 2002 at 20:31:11, Dann Corbit wrote:
>
>>>0.4% and the chance it's in a 256k cache is 0.05%. Seems like the most it could
>>>speed your program up is 0.35%, and that's not taking into account the stuff
>>I suspect the relationship is not linear, but then again, hashing itself
>>scatters the data on purpose, so it might be.
>
>Exactly, one has to hope that it's linear.
>
>>>'Course, if you're doing very small searches, the hash table would fit in the
>>>cache and be accessed with relative frequency due to iterated searching, but I
>>>don't consider this a very interesting case.
>>True, but it will be a big help in some operations like EGTB lookup.  I doubt if
>
>I'm not sure if it would be. If the hash table is being accessed way more
>frequently than the EGTB cache then it will push out the EGTBs.

Yes, you're clearly right.  Probably not a good choice at all when it comes to
MIPS/dollar for chess.



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