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Subject: Re: Question about generating Nalimov TB's

Author: Robert Hyatt

Date: 15:08:36 05/01/04

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On May 01, 2004 at 17:37:05, GeoffW wrote:

>Hi
>
>I thought I might put my old PC to use calculating the 3-4-5 Piece Nalimov
>Tablebases. I have started it off running a while ago, but just realised there
>might be a problem.
>When I get to calculate 5 Piece KPPKP for example would that need all of the
>minor tables to be on disk at once ?

Yes...


>I was thinking I could calculate a bunch of 50 or so at a time, then compress
>them to the *.emd format and then delete the uncompressed originals. Can the
>generator program cope with the minor tables in compressed format ?

If I recall, no.  I think Eugene answered this at some point in the past..


>I suspect not, but that means I would need a huge amount of disk space to be
>able to calculate KPPKP. Any clarification of this would be appreciated. Thanks
>

I think the 5's take 20+ gigs uncompressed.  Not _that_ big...






>Incidentally this Tbgen program makes a wonderful torture tester for your hard
>drive, hope my disk even survives till I get to the pawn tables !!
>

You might be low on memory which will make it page a bunch, also...





> Regards Geoff



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