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To: andy kelly who wrote (165627)5/31/2001 12:43:01 AM
From: rudedog  Read Replies (1) of 176387
 
Andy - Darrell did a pretty good writeup in
Message 15871222
on getting to EPIC in the first place.

But the original EPIC concept was that explicit parallelism would be found and exploited by the compilers. There was almost no hardware real estate in merced devoted to optimization. Unfortunately, the compiler technology was not up to snuff and a variety of post-compile hooks had to be added to McKinley, some of which need instruction help or hints to work right. There are some other minor changes as well.

So while code written and optimized for merced will run on McKinley, it will need to be polished and recompiled to run well... and so many developers of more complex code decided to waste as little time as possible optimizing for merced and will devote that time and energy to McKinley work. That means either a plain vanilla port or no port for merced.
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