Author: Chris Taylor
Date: 01:38:30 04/01/02
Go up one level in this thread
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
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