Author: Chessfun
Date: 05:50:55 04/01/02
Go up one level in this thread
On April 01, 2002 at 04:38:30, Chris Taylor wrote:
>On April 01, 2002 at 01:01:12, Chessfun wrote:
>
>>On March 31, 2002 at 18:41:24, Mike Hood wrote:
>>
>>>The normal figure thrown about for the size of a complete 6-piece egtb
>>>collection is "about a terabyte". Can we try to make this figure a bit more
>>>accurate? In the tablebase generation program the file size calculation is
>>>separate from the generation itself, so it should be possible to calculate the
>>>size of the uncompressed files exactly. When we have that we can make an
>>>estimation of the size of the compressed tablebases (approx 20% of the
>>>uncompressed size). And when we have that figure we can sit back and watch the
>>>developments in storage media to see when 6-piece TBs become technically
>>>feasible. Constellation 3D promised their FMD technology would produce optical
>>>disks with a capacity of 1.5 terabyte, but they've failed to deliver so far.
>>>
>>>There should be 365 6-piece tablebase pairs of varying importance, in three main
>>>groups:
>>>
>>>Kxx-Kxx : 120 tablebases
>>>Kxxx-Kx : 175 tablebases
>>>Kxxxx-K : 70 tablebases
>>>
>>>If we have the size for each group we'll know how much space a person needs on
>>>his hard drive to generate KPPKPP, KPPPKP and KPPPPK respectively. Or someone
>>>can fire up his university's supercomputer.
>>>
>>>Maybe it's just an academic pursuit at present, but technology has a habit of
>>>overtaking you when you least expect it.
>>>
>>>And when we've finished with the 6-piece tablebases, what about the 7-piece
>>>egtb's?
>>>
>>>Kxxx-Kxx : 525 tablebases
>>>Kxxxx-Kx : 350 tablebases
>>>Kxxxxx-K : 126 tablebases
>>>
>>>I bet you're all dying to get your hands on the KBBBBBK tablebase ;)
>>
>>
>>According to John the next CM will have a 6 person tablebase generator
>>http://www.talkchess.com/forums/1/message.html?220246
>>The generation size of all 6 person bases will be compressed and will only
>>take 15 Gb, generation of all 6 person will take about 8 hours.
>>
>>Sarah.
>
>
>Do to modern DVD theories. The whole lot can be compressed onto a floppy disk.
>3,4,5,6 and some 7 piece!!
>Sorry about only some 7 p’s they are a terror to generate, as I have only a hand
>held calculator??
>The only downside of this software is it can take weeks to get the mix set
>right. Anyone wanting a copy of this software had better beware. You are
>looking at 500+ English Pounds.
>Of course if you want further details...............?
>
> kompress@aol.com
>
>Beta Tester 12g4xx
Chris,
Send me the 7's...i'll let the CM generate the 6's ;-)
Sarah.
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