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Subject: Re: Questions about the new Nalimov tablebase files...

Author: Robert Hyatt

Date: 12:50:19 12/13/02

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On December 13, 2002 at 14:50:30, Dann Corbit wrote:

>What is different?

Nothing except that the files > 2.0 gigs are broken into two pieces.  Old files
were
not that big so it wasn't an issue.  But there are some now that are huge.

>A different compression scheme?

no.

>A different encoding scheme?

no.

>Why the change?

the average user can't address files > 2.0 gigabytes on all operating systems.

>Has the interface changed?

Yes.  There is a new egtb.cpp source file.



>What changes will be needed from old code to new code?

just a new egtb.cpp code is it.


>Have the rules for usage changed?



no,  Other than you better have a lot of disk space, and a lot of RAM for the
decompression
indices.  IE perhaps 300-400mb of ram for the current set of 200+ gigs of files.

And when I say 300-400mb, I mean RAM dedicated to the decompression indices, not
including the program, hash tables, cache, etc...




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