Author: Robert Hyatt
Date: 15:03:18 11/13/01
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On November 13, 2001 at 15:37:52, Slater Wold wrote: >On November 13, 2001 at 13:02:34, Joshua Lee wrote: > >>I have seen many argue this point weather or not DB had much in the way of >>intellegence which makes no sense do you really think that IBM would risk just >>having a node cruncher? Don't you think that Someone on the DB team would >>explain how there are many positions where brute force wouldn't work even if >>every cpu in the world were connected together? >> >>What technigues Can be used together and on micros? Has anyone tried to make >>their program more like this enigma? >> >>Here's what i found: >> >>sophisticated quiescence search >> - endgame heuristics >> - a few small endgame databases >> - position repetition detection >> - calculates mobility >> - evaluates space >> - close to 50 tables to evaluate a chess move >> (implied that this includes: >> piece square tables >> pawn bitmaps >> open file >> coefficient updates after each move (incremental evaluation) >> >>Deep Blue can recognize (in hardware) approximately 6,000 >>chess-specific features > >DB's features were 75% hardware and 25% software. > >With a micro, they have to be 100% software. > >Hence the catch on trying to make something "like" it. > >DB was the last chess "super computer". Chess software is made to make money, >or as a hobby. Chess hardware is made to spend money, and lots of it. > >Although DT I only cost about $5,000. Less than *most* servers now. A LOT less >than Hyatt's quad 700. (A 700mhz Xeon CPU is about $1,300 right now. That's >$5,200 just in CPU's.) My total machine is worth about $10,000 now. We just bought another one identical to my machine to use for our departmental file server. Only difference it that the new one has 6 36 gig 10K scsi drives and a raid-5 (hardware) controller. The chassis is now under $2K. $5K for the processors, a couple of hundred bucks for 512mb of RAM, and then the disks of your choice will give you a quad for under 10K. I don't know if Intel has released any quad 900 or quad 1000 certified processors. They will work in this chassis when/if they do.
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