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- Subject: Re: At the edge of LNUM patch
- From: David Kastrup <dak@...>
- Date: Thu, 27 Mar 2008 10:34:54 +0100
Asko Kauppi <askok@dnainternet.net> writes:
> In my view, Mike's results are in line with the Core Duo results I had
> measured.
>
> What cannot be done is treat x86 as a single optimization target. It
> is not.
>
> Then again, modern x86's are utterly fast on FP, which they calculate
> as fast as integers.
No, they don't. Integer arithmetic can be parallelized much more
thoroughly. But when we are working with a byte-code interpreter, the
parallelization will speed up the byte code interpreter itself, but
hardly the arithmetic fed into it: the interpreter will not issue
arithmetic fast enough to make a difference.
--
David Kastrup