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On Mon, 20 Sep 2004 14:25:53 -0400 "David F. Newman" <dnewman@...>
wrote:
| No, I have no reason aside from pure geek value. I was under the,
| probably false, impression that sparc64 executables could move data
| around faster. i.e. doubles could be loaded in fewer clock cycles.
| So I have 2 questions that maybe you can answer,
|
| 1) Is the only advantage to a sparc64 executable access to memory
| larger than 2G per process?
Pretty much.
| 2) Assuming yes to question 1, then what is with the hype with 64bit
| processors?
x86/amd64 isn't like sparc/sparc64. amd64 CPUs are fast because they
have larger cache and a whole bunch of extra registers, not because
they're 64bit. On sparc, we can gain pretty much all the advantages of a
v9 CPU whilst still running a 32bit userland.
But then, "four times as many general purpose registers!" just doesn't
sound as cool as "64 bit!".
--
Ciaran McCreesh : Gentoo Developer (Sparc, MIPS, Vim, Fluxbox)
Mail : ciaranm at gentoo.org
Web : http://dev.gentoo.org/~ciaranm
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