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Technology Stocks : Intel Corporation (INTC)

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To: Rob Young who wrote (128518)	2/28/2001 1:06:05 PM
From: Tenchusatsu	Read Replies (2) of 186894

Rob, <Are you saying it won't happen, PERIOD?> Period. It's a wild fantasy to think that 256 CPUs can scale UMA-style. For a normal read transaction, the worst-case latency is 14 hops (seven hops for the request, seven hops for the returned data), meaning the average will be seven hops. No UMA system would require an average of seven hops, even if you get the best-case hop latency every time. Besides, the infrastructure cost of a 256-CPU system is astronomical. UMA suggests SHV (Standard High Volume), which EV7 has absolutely no hope of reaching, even with 16-way systems. (Unless you think several gigabytes of RDRAM w/ ECC is going to be cheap, or processor packages w/ over 1,400 pins.) Tenchusatsu

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