Computer Chess Club Archives




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

Author: Robert Hyatt

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

Go up one level in this thread

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
not that big so it wasn't an issue.  But there are some now that are huge.

>A different compression scheme?


>A different encoding scheme?


>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
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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