From: Andreas Schulz <accot.schulz@nord-com.net>
Subject: Re: fast computing with GNAT (?)
Date: 2000/04/07
Date: 2000-04-07T09:49:46+00:00 [thread overview]
Message-ID: <38EDAEC0.412E6CC7@nord-com.net> (raw)
In-Reply-To: 38ED9A6E.5809968F@maths.unine.ch
Gautier responded to :
> > The f77 version takes about 7.5 s and the Ada version takes
> > about 38 s on my Linux/laptop.
> > The actual build commands are:
> > gnatmake -O4 test1.adb
> Ok. Try gnatmake -O4 -ffast-math -gnatp test1.adb
Maybe you'll be better off with -O3 ?? According to the manual,
gnat accepts only 0..3 for -O, and I had the impression that
4+ is read as 0.
> The -gnatp is essential (=pragma suppress(all_checks))
> to compare with Fortran!
Andreas
next prev parent reply other threads:[~2000-04-07 0:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-04-07 0:00 fast computing with GNAT (?) Reinert Korsnes
2000-04-07 0:00 ` Gautier
2000-04-07 0:00 ` Andreas Schulz [this message]
2000-04-07 0:00 ` Gisle S�lensminde
2000-04-07 0:00 ` Robert Dewar
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox