From: toback2 <[log in to unmask]>
Date: Friday, October 31, 1997 12:02 PM
Subject: Re: Interex Hot News on IA-64 - who's the 5%


>>If I remember correctly, when we went from MPE-V to MPE-XL (16 to 32-bit),
>>we needed to at least, recompile.  In some cases, we had to do more than
>>that.
>
>Actually, the vast majority of user applications didn't require any sort
>of "migration" except store/restore. Recompiling got the next level of
>performance, but compatibility mode (emulation) worked -- works! --
>perfectly well.

You are correct Bruce, and I should have clarified the statement with "if
you wanted to migrate your applications to the PA-RISC architecture.  You
can run in Compatibility Mode (CM) in most cases, OCTCOMP your code to gain
some performance advantage, but to get full NM performance advantages, a
recompile (or more) was needed.

I got quite a bit of mail over that statement...apologies to those who may
have misunderstood, and "thank you's" for those who nicely pointed out my
omission.

Joe

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