Author: Uri Blass
Date: 01:00:46 04/01/02
Go up one level in this thread
On April 01, 2002 at 03:45:35, pavel wrote: >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 I guess that it came as a joke of sarah. Uri
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