Re: AMD64 64bit vs 32bit speed increase
On Fri, Feb 13, 2004 at 07:43:29PM -0500, C. Scott Ananian wrote:
> On Sat, 14 Feb 2004, Paul Brook wrote:
>
> > -msse2 -mfpmath=sse2. It's possible that oggenc also has custom sse based
> > routines which are not enabled when compiled for i386 (the default x86 debian
> > arch).
>
> I looked for these, but could not find any. I think the differences in
> floating-point code generation are most likely responsible.
>
This is another good reason for multiarch. making it possible to have different
compile arguments to support the different instruction sets, SSE, SSE2, 3DNow
and 3DNow+.
I agree that, for the most part, these will not make a major change in overall
system performance but things like oggenc are a great example of the times you
would notice it.
I would be very happy if the next time to go to 'AutoRip' a CD I have to wait
for a much shorter time.
-allen
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