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Subject: Re: What kind of tablebases could you have with 11 terabytes of storage?

Author: José de Jesús García Ruvalcaba

Date: 10:19:43 07/27/99

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On July 26, 1999 at 21:54:00, James Robertson wrote:

>On July 26, 1999 at 14:49:33, José de Jesús García Ruvalcaba wrote:
>
>>On July 26, 1999 at 14:08:44, Michel Langeveld wrote:
>>
>>>On July 26, 1999 at 14:05:08, José de Jesús García Ruvalcaba wrote:
>>>
>>>>On July 26, 1999 at 11:24:58, Paul Richards wrote:
>>>>
>>>>>IBM announced a new Enterprise Storage Server that scales up to 11 terabytes.
>>>>>Just wondering what some idly rich chess fanatic could do with that. :)
>>>>
>>>>	I could be wrong, but it seems to me that full uncompressed six-men tablebases
>>>>would barely fit in 11 terabytes.
>>>>José.
>>>
>>>If I'm not wrong the the size of all 5 men tablebases should represent one 6 men
>>>tablebase. The size of all commonly used tablebases is about 5Gb compressed.
>>
>>	It is 5.9Gb, and it is not even full five-men tablebases.
>>
>>>So
>>>I think the size of a one 6 men compressed endgame should fit under 10Gb...
>>>
>>>Michel Langeveld
>>
>>	1870 files (according to my computations which can be wrong) are required for
>>full six-men tablebases. If we take them uncompressed, I think we are close to
>>11Tb.
>>José.
>
>If you finger Crafty on ICC, it says 20GB for all 5-man tablebases.
>
>James

	Uncompressed Nalimov tablebases, full four men plus all the 3+2 five men
tablebases need 22Gb. Compressed they are a lot smaller. The real Crafty uses
them uncompressed, as that way it is faster for it. Probe time is critical, I
think.
José.



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