Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Tablebase help

Author: Joakim Nilsson

Date: 03:12:29 07/02/00

Go up one level in this thread


On July 02, 2000 at 06:10:10, Mogens Larsen wrote:

>On July 02, 2000 at 05:41:54, Joakim Nilsson wrote:
>
>>Ahaa...But cant i create all at one command?
>
>I'm not sure if you can, there's no mention of such a command in the
>documentation. I don't know if you got it, but I'm quoting the relevant part
>underneath.
>------------------
></pre>
>2. Run it. You have to have A LOT OF memory if you want to generate 5-man
>   tables that contains pawns (I used machine with 512Mb during debugging,
>   and recommend to have at least 256Mb). 4-man tables can be easily
>   generated at a machine with 32Mb of RAM.
>
>   To generate all 3- and 4-man tables you have to type
>      tbgen -m 10 -p kpkp kppk
>   (program will use 10Mb of RAM for generated tables and will either map
>   or load necessary minor tables into memory). It takes 2 hours to generate
>   all 3- and 4-man tables at PII/400.
>
>   To generate 5-man pawnless table (and all necessary minor tables) you
>   have to type
>      tbgen -m 200 -p <table>
>   It usually takes from several hours to one day to generate such a table
>   at PII/400 with 128Mb of RAM.
>
>   To generate 5-man table, where only one side has pawn, you have to type
>      tbgen -m 580 -p <table>
>   It can take several days to generate such a table at Alpha/533 or PII/400
>   with 512Mb of RAM.
>
>   Unfortunately, 32-bit operating systems have not enough address space to
>   map or load all necessary minor tables into memory when generating 5-man
>   tables with 2 or 3 pawns. You have to use either 64-bit OS, or TB caching
>   code that usually is less efficient but will not use gigabytes of address
>   space, e.g.
>      tbgen -m 572 -c 100 <table>
>   (program will use 572Mb of RAM for generated tables and 100Mb of RAM
>   for minor tables caching).
>--------------
>Hope it helps.
>
>Best wishes...
>Mogens

I got it working now!Thx!



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.