Author: Robert Hyatt
Date: 05:55:04 11/14/01
Go up one level in this thread
On November 14, 2001 at 03:05:02, Slater Wold wrote: >On November 13, 2001 at 18:03:18, Robert Hyatt wrote: > >>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. > >They have released certified 900mhz Xeon's. But they are almost double what the >700's are. > >Even with inflation from when DT was made, it still wouldn't be $10k. Actually, if you look carefully, DT cost probably more than my quad, but not by much. The $5,000 is the figure quoted by Hsu to put together the chip thru project Mosis, and then build the circuit board. That doesn't count the sun workstation they originally used, which was at _least_ $5,000 as well. So they are close in cost, and with the quad 700's, they are close in performance although the quad 700's are a bit faster.
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