Author: Dave Gomboc
Date: 00:44:48 03/03/00
Go up one level in this thread
On March 02, 2000 at 18:26:09, Robert Hyatt wrote: >On March 02, 2000 at 01:42:43, Ed Schröder wrote: > >>On March 01, 2000 at 20:52:52, Jonathan Lee wrote: >> >>>Thanks, Pete on IBM's logic on their selling of chess software. If their >>>software was awesome, they already would have a large share against the top >>>guns. >>> >>>Someday said every 18 months the hardware doubles in speed. >>>Someone else said IBM's hardware "DB" is 1000 times faster than the 500MHZ PIII. >>>In the year 2015, (what a bold prediction) PC's will be as fast as Deep Blue. >>>Do the math: >>>2 ^ 10 = 1024 (twice the speed 10 times equals about 1000 times faster) >>> >>>18 * 10 = 180 (18 months multiplied by ten times equals 180 months) >>> >>>180 months equals 15 years >>> >>>2000 + 15 = 2015 (We are now in the year 2000; add 15 years and you will get >>>2015) >> >>What about today? >> >>Nowadays programs hit a deeper ply depth than DB. See the log files >>on the IBM site. >> >>Ed > > >No... you are mis-reading the logs. When you see depth=10/5, that means >10 ply (full width + extensions) in the software, another 5 plies + everything >but singular extensions in the chess engine. When you look at those numbers, >we are getting crushed in search depth. 10(5) means 15 plies full-width, no >null-move or anything, + their extensions. > >This was covered when we were discussing the DB logs. I confirmed this >point with two different DB team members to be sure we were understanding the >(n) number correctly. Looking at the logs, the hardware searches 4-6 plies >depending on the base software search depth. When you see 11(6) that is a >full-width 17 ply search, which is awesome. Double-check that. 11(6): 17-ply search, yes. _full-width_ 17-ply search, I don't think so. The top of the software search is full-width, the bottom of the software search is selective, and the hardware search is full-width again. At least, that is my understanding. The interesting question is how many of the 11 in software were full-width... and my recollection is that the answer is not 11. Dave
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