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Date: Tue, 29 Jul 1997 12:27:01 +0200
From: Christoph Kukulies <kuku@gilberto.physik.rwth-aachen.de>
To: Sylvain Hubert <hubert@physics.uottawa.ca>
Cc: freebsd-questions@FreeBSD.ORG
Subject: Re: fortran compiler
References: <33D8FF0C.7D6B@physics.uottawa.ca>
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In-Reply-To: <33D8FF0C.7D6B@physics.uottawa.ca>; from Sylvain Hubert <hubert@physics.uottawa.ca> on Fri, Jul 25, 1997 at 03:31:24PM -0400
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On Fri, Jul 25, 1997 at 03:31:24PM -0400, Sylvain Hubert wrote:
> Hi!
> 
> I am testing the f2c compiler on a PentiumPro (freeBSD OS) and
> it seems that the optimization is not very efficient. It
> might be because I do not use the proper options. I only try the
> option -O3 for optimization.
> 
> Do someone knows how to optimize a fortan code for a Pentium Pro,
> in other word, what options should I put?
> 
> Or, do someone knows of any good fortran compiler for a PentiumPro 
> chip?
> 
> Thank you in advance for any reply!
> 
> Sylvain...

In what areas do you want to achieve optiimization? FP performance?
Code size? Code speed?

Optimizing for C is generally speaking also good for f77 (f2c).

You might recompile libmsun with -DHAVE_FPU (/etc/make.conf).
But beware of the consequences of loosing IEEE compliance.


-- 
Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de