Author: Mike Hood
Date: 15:41:24 03/31/02
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 ;)
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