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To: Tenchusatsu who wrote (160757)2/28/2002 10:36:41 PM
From: Joe NYC  Respond to of 186894
 
Tenchusatsu,

You've got to be kidding me. If that's the case, then there is no need for chipsets supporting Intel's FSB to enable 2+ way configs either. All you do is add another processor to the bus. It's that simple!

Trust me, Joe. It IS harder to implement multiprocessor configs with HyperTransport than it is with the FSB. The reward is better scalability, but don't kid yourself into thinking that it's a walk in the park.

I didn't say that it is simple. The difference is that all the work is on the CPU end, which includes all the logic + switching (which is not an issue in a shared bus). And there is no external chipset managing the communication between the CPUs, only traces connecting them (if my understanding is correct).

The complexity of HT is a reason (I just posted on the "other" thread) that I think it would be the best idea for AMD to initially release Clawhammer with single HT link and dual channel DDR, which would completely sidestep the the need to debug multiprocessing for now, so that it does not become a show-stopper for the desktop release at the end of 2002.

Joe



To: Tenchusatsu who wrote (160757)2/28/2002 11:15:12 PM
From: combjelly  Read Replies (2) | Respond to of 186894
 
"It IS harder to implement multiprocessor configs with HyperTransport than it is with the FSB."

Sure it is. But there is as much reason to believe that AMD can do it to some small multiple of 4 processors (with a reasonable switch), as there is to believe they can't. And that is the biggest threat to Intel.