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Subject: Re: FMD-ROM : 140 Gb for your tablebases!

Author: blass uri

Date: 09:28:57 03/20/00

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On March 20, 2000 at 03:49:50, Paulo Soares wrote:

>On March 20, 2000 at 00:58:48, Côme wrote:
>
>>On March 19, 2000 at 22:22:34, Paulo Soares wrote:
>>
>>>On March 19, 2000 at 21:48:30, Aloisio Ponti Lopes wrote:
>>>
>>>>...maybe it will be available in the next 2 years.
>>>>
>>>>A. Ponti
>>>
>>>Which would be the largest number of pieces to be used in Nalimov
>>>Tablebases with 140Mgz? 7, 8, 9?
>>>
>>>Paulo Soares, from Brazil
>>
>>Hello,
>>IMHO only 6 pieces.
>>Best Regards
>>Alexandre Côme
>
>Only 6! How many memory for 7 pieces?
>Thanks,
>Paulo

I think that if you want all of them you need about some hundreds times more
memory for adding one piece.

The problem is that the number of possibility of 7 pieces is significantly
bigger than the number of possibility of 6 pieces and not only the fact that you
need about 60 times more memory for one 7 pieces tablebase relative to 6 pieces
tablebase.

You need some Gbytes for 5 pieces tablebases
then you probably need  some hundreds of thoushands of Gbytes for all the 7
pieces tablebases

You need sometimes hundreds of mbytes for one 5 pieces tablebases so you need
something some Gbytes to use one 6 men tablebases and you need something like
100-200 Gbytes to use only one 7 men tablebase.

Uri



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