Author: Robert Hyatt
Date: 18:32:12 11/09/01
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On November 09, 2001 at 11:54:42, John Merlino wrote: >Since I am modifying the opening book format in Chessmaster to allow an >"unlimited" number of moves in a book, I was wondering a few things about the >general performance of my PGN importer. > >Some questions: > >1) In general, how long does it take to create a book (i.e. size to time ratio). Crafty can create a book from 3+ million PGN games in about 30 minutes using a single 700mhz cpu with good disk drives (10K scsi). >2) How much memory does the process take (size to RAM ratio). Not very much. It will build in 16mb and more memory doesn't help. > >In my largest test, I used a PGN file with almost 150,000 games in it, and I'm >wondering if my time/RAM usage is anything close to "the norm". I'd rather not >give out the stats of this process just yet, to avoid any bias in responses. ;-) > >Many thanks, > >jm I would suspect that 150K games would take a couple of minutes. I haven't done one that small. I assume you have crafty handy. Assuming you want to make a book that is reasonably deep and which excludes moves played 4 or less times, type this inside crafty: book create xxx.pgn 60 5 and time it. Bob
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