Author: Eugene Nalimov
Date: 09:56:48 11/05/01
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On November 05, 2001 at 12:46:36, Slater Wold wrote: >On November 05, 2001 at 12:27:26, Eugene Nalimov wrote: > >>On November 05, 2001 at 07:04:57, Mike Hood wrote: >> >>>On November 04, 2001 at 17:49:04, Manuel Rodriguez Blanco wrote: >>> >>>>Threre is a free program for generate 6Man Tablebase? and some 7man? >>>>if yes where? >>>> >>>>I know that Hiarcs7.32 come with TBGEN that generate 5man Tablebase but no 6Man, >>>>i think. >>>> >>>>Thanks very much, >>>> >>>>Manuel >>> >>>You'll find a few 6-piece tablebases at ftp://ftp.cis.uab.edu/pub/hyatt/TB/six >>> >>>If you remember that these are the compressed tablebases, and they have to be >>>generated in their uncompressed form (5 to 10 times bigger) you'll get an idea >>>of the memory requirements. TBGEN is able to generate 6-piece tablebases, but >>>you'll need to recompile the source code (it's also on this ftp site) and run it >>>on a 64-bit operating system with more than 2 GB of memory. Poor Windows :( >> >>All 6-man TBs on Bob's site were generated on the machine running Windows NT. >> >>Eugene > >LOL - Talking trash to a MS man. Not smart when you don't know the facts. :) > >That was NT for Alpha's though, correct? It does have to be a 64-bit system, >AFAIK. Am I wrong? Yes and no :-) Some of TBs were really generated on Alphas. But NT on Alpha runs as 32-bit system: it uses 64-bit integers if you explicitely specified that, but all the 'ints' and 'longs' -- as well as pointers -- are 32-bit. That means that the program cannot use more than 2Gb of address space for its data. And majority of the TBs were generated on the x86 system. It happened that for TB generation that system (dual Xeon-550, 2Gb RAM) is faster than dual 21164A Alpha. Mainly because Compaq dropped NT on Alpha, so there was no reason for MS to buy newer hardware. We have to support installed software, so we cannot just dump those Alpha systems into garbage, but no new development. Eugene
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