[mdlug] [Fwd: Re: [opensuse] 64 bit vrs 32 bit advantages speedetc.]

[David Lane]

If I had a non-Intel cpu I would not use an intel compiler though.  The "OP" code is specific to that cpu.  Does AMD have compilers for Linux?

I have enough problems with motherboards. 


----- Original Message ----
From: "Ingles, Raymond" <Raymond.Ingles at compuware.com>
To: MDLUG's Main discussion list <mdlug at mdlug.org>
Sent: Wednesday, October 31, 2007 11:52:51 AM
Subject: Re: [mdlug] [Fwd: Re: [opensuse] 64 bit vrs 32 bit advantages speedetc.]


> From: David Lane
> I keep thinking about how things change with a 64bit Intel based
 Linux bow.

Of course, you also have to look out for sneaky corporations. Intel's
 compilers
produce deliberately slower code for AMD's 64-bit chips:

 http://www.swallowtail.org/naughty-intel.html

 The other point is that, aside from the larger address space, the
 64-bit Intel
architecture has 16 general-purpose registers instead of 4 on 32-bit
 Intel. Some
code likes lots of registers, and that can be a win in those cases.

 Sincerely,

 Ray Ingles                                          (313) 227-2317

 "...as we enjoy great advantages from the inventions of others, we
  should be glad of an opportunity to serve others by any invention
       of ours; and this we should do freely and generously."
         - Benjamin Franklin, prolific inventor, on patents
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