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Subject: Re: 6Man and 7Man Tablebase

Author: Slater Wold

Date: 14:52:16 11/05/01

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On November 05, 2001 at 12:56:48, Eugene Nalimov wrote:

>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

Well, my question was actually aimed at this:

Can my computer generate 6 piece TB's?

If you don't know it's a Dual AMD 1.53Ghz with 1GB of RAM (probably be 3GB, the
max, in a month or so) running Windows 2000 Server.

I understand compiling the kppkpp TB is probably out of the question, even with
my "good" hardware.  I doubt it'd even fit it on my HD uncompressed anyway.

I was just curious if I could.



Slate



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