Author: Vincent Diepeveen
Date: 08:07:52 10/11/02
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On October 11, 2002 at 10:38:12, Jeremiah Penery wrote: >Hmm, let's see. If DB gets 'upgraded to 2002 standards", that would mean they >can make a fully custom .13 micron chip running at 300MHz, able to do a full >evaluation every clock cycle. It will also have 20GB/s memory bandwidth to >256MB of RAM for the hash tables on the board. So one single chip will search >300M positions/second, and they can do whatever evaluation they want. Yes, yes, >obviously a 'complete joke'. I'm more afraid for Brutus in like 30Mhz FPGA than i am for a deep blue at 0.13 micron. First of all, deep blue wasn't written in verilog or any 'high level' language. It was simply cut'n pasting the logics to each other. So it would require an entire new design to make something for 0.13 in verilog or whatever. Secondly, that 0.13 process technology including the big salary from Hsu would be around 20 million of investments. This versus a FPGA board with some tools you can get for a couple of thousands of euro's (1 euro = 1 dollar at the moment about). Further, Hsu would have to proof a number of things being capable of implementing all kind of things like nullmove, efficient move ordering, and a lot of evaluative things in hardware. it's not trivial to add ram to the chip, because a single cacheline from RAM is a lot slower than processing a bunch of nodes in hardware. If you run at 300Mhz with say 10 clocks a node on average, you can achieve about 30 million nodes a second. However you can't do 30 million random word lookups a second in the RAM. latency is too big for that. It's not trivial to combine the 2 things. In fact crafty with 1 million nodes a second can't even do all requests to a hashtable. An important point in the end is the price where this all gets produced for, because you need to sell a bunch of these processors, or you won't get back that $20 million of investments. And in the end, when the cpu hits the market after say a year or 5, then i'll be having a 4 processor 10Ghz intel/amd machine delivering millions of nodes a second for DIEP :) >>Of course it gets completely annihilated when appearing in 1997 standards. >> >>So if Hsu upgrades his chip to a single cpu chip with a new and better >>evaluation (it's of course questionable whether he is capable of >>manaqing that) then it will not search deeper than deep blue in 1997 >>of course, unless he adds nullmove and hashtables. > >The above paragraph has no basis in reality.
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