Greg Lindahl wrote:
> On Sun, Nov 28, 2004 at 12:41:38PM +0100, Toon Moene wrote:
>>Well, that would put Suns (SPARCS running Solaris) at a severe
>>disadvantage, I agree - most systems seem to cope, though ..
> Now Toon, be nice and don't bait the Sun employee. Sparc is not the
> only architecture which doesn't do well computing lots of denorms.
> For example, flush to zero is important for getting good performance
> on Opteron, Alpha, and some MIPS implementations.
You probably thought this would go to me alone - no siree. The list
software rightly redirects all replies to the list.
As of the case in point: Tell me how changing 3 lines in a 300,000 line
Fortran program could gain you 45 % elapsed time on an Opteron, Alpha,
or MIPS running a sensible operating system (i.e., GNU/Linux).
[ Keith might want to contact Hans Joraandstad for the answer on
Solaris].
--
Toon Moene - e-mail: [log in to unmask] - phone: +31 346 214290
Saturnushof 14, 3738 XG Maartensdijk, The Netherlands
Maintainer, GNU Fortran 77: http://gcc.gnu.org/onlinedocs/g77_news.html
A maintainer of GNU Fortran 95: http://gcc.gnu.org/fortran/
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