Author: pavel
Date: 00:45:35 04/01/02
Go up one level in this thread
On April 01, 2002 at 03:20:02, Uri Blass wrote: >On April 01, 2002 at 01:16:22, pavel 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. >> >> >>Even though that would be great, it sounds very unrealistic (atleast to me), did >>you get that information from John? >> >>only 8 hours and 15 gb ! WOW. >> >>pavs ;) > >I guess that the numbers of 15 gb is going to be >changed in 2.4 to more realistic numbers. I thought 15gb is too less. 2.4 sounds like even more unrealitic. > >The 8 hours is realistic and I expect the computers of 1.4.2020 >to be able to generate all the 6 piece tablebases in 8 hours I dont expect CM9000 to come at 1.4.2020 ;) Either this is meant as a joke by sarah or something is seriously wrong somewhere. :) pavs
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