Re: P4 optimized Debian GNU/Linux?
On Wed, 25 Feb 2004 19:34, Chris Cheney <firstname.lastname@example.org> wrote:
> I have personally seen cases where compiling for amd64 speeds things up
> to 50% faster on the same box, but it has more general purpose registers
> as well.
AMD64 is totally different.
64bit registers can make a factor of 10 difference for some algorithms.
More registers can also make a huge difference.
Then you have a different version of EVERY shared object.
Think of AMD64 as a different CPU not as an optimisation.
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