From: Gautier <Gautier.deMontmollin@Maths.UniNe.CH>
Subject: Re: Ada95 speed
Date: 1999/05/18
Date: 1999-05-18T00:00:00+00:00 [thread overview]
Message-ID: <3741B203.4890880B@Maths.UniNe.CH> (raw)
In-Reply-To: 3741aa37.3892645@news.pacbell.net
> >>Is Ada95 slow in order to be safe?
> >With run-time checks, yes; without them, no.
> >-gnatp suppresses all.
> On Win95, I see a very modest difference between "-O3" and "-gnatp
> -O3" on this Mandelbrot code.
The main suppressed checks are for conversions, discrete range checks,
array bound checks etc.; there are no standard checks for floating
point operations (are there ?) - this could explain your observation.
But -O2 or -O3 could help... and even, in that case, the choice
of a good algorithm and the removal of the hidden Sqrt helps surely
even more...
--
Gautier
next prev parent reply other threads:[~1999-05-18 0:00 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <374182F2.B10AD449@Maths.UniNe.CH>
1999-05-18 0:00 ` Ada95 speed Tom Moran
1999-05-18 0:00 ` Gautier [this message]
1999-05-19 0:00 ` Robert Dewar
1999-05-20 0:00 ` Clifford J. Nelson
1999-05-20 0:00 ` Tucker Taft
1999-05-20 0:00 ` Tom Moran
1999-05-20 0:00 ` Tom Moran
1999-05-21 0:00 ` Tom Moran
1999-05-31 0:00 ` James E. Hopper
1999-06-01 0:00 ` Clifford J. Nelson
1999-06-01 0:00 ` James E. Hopper
1999-06-02 0:00 ` Clifford J. Nelson
1999-06-04 0:00 ` Clifford J. Nelson
1999-06-02 0:00 ` James E. Hopper
1999-06-02 0:00 ` Clifford J. Nelson
1999-06-02 0:00 ` James E. Hopper
1999-06-02 0:00 ` Clifford J. Nelson
1999-06-02 0:00 ` Gautier
1999-06-02 0:00 ` John B. Matthews, M.D.
1999-06-03 0:00 ` Ada95 speed (wandering off topic slightly) Dale Stanbrough
1999-06-03 0:00 ` Larry Kilgallen
1999-06-04 0:00 ` Aidan Skinner
1999-06-02 0:00 ` Ada95 speed John B. Matthews, M.D.
1999-06-02 0:00 ` Clifford J. Nelson
1999-06-02 0:00 ` Robert Dewar
1999-06-04 0:00 ` Clifford J. Nelson
1999-06-04 0:00 ` Ole-Hjalmar Kristensen
1999-06-04 0:00 ` David C. Hoos, Sr.
1999-06-01 0:00 ` Clifford J. Nelson
1999-06-01 0:00 ` James E. Hopper
1999-06-02 0:00 ` Robert Dewar
1999-06-04 0:00 ` Clifford J. Nelson
1999-06-05 0:00 ` Robert Dewar
1999-06-03 0:00 ` Robert I. Eachus
1999-05-31 0:00 ` Gautier
1999-05-19 0:00 ` Robert Dewar
1999-06-07 0:00 Robert I. Eachus
1999-06-07 0:00 ` tmoran
-- strict thread matches above, loose matches on Subject: below --
1999-06-06 0:00 tmoran
1999-06-06 0:00 ` Robert Dewar
1999-06-06 0:00 tmoran
1999-06-06 0:00 ` David C. Hoos, Sr.
1999-06-06 0:00 ` tmoran
1999-06-07 0:00 ` Robert Dewar
1999-06-06 0:00 ` Brian Rogoff
1999-06-06 0:00 ` David C. Hoos, Sr.
1999-06-07 0:00 ` Robert Dewar
1999-06-05 0:00 tmoran
1999-06-05 0:00 ` Al Christians
1999-06-05 0:00 ` David C. Hoos, Sr.
1999-06-05 0:00 tmoran
1999-06-05 0:00 ` Robert Dewar
1999-06-05 0:00 ` Ehud Lamm
1999-06-05 0:00 ` William Starner
1999-06-05 0:00 ` Ehud Lamm
1999-06-05 0:00 ` Clifford J. Nelson
1999-06-06 0:00 ` David Botton
1999-06-06 0:00 ` Ehud Lamm
1999-06-07 0:00 ` Robert Dewar
1999-06-07 0:00 ` Ehud Lamm
1999-05-18 0:00 Clifford J. Nelson
1999-05-17 0:00 ` David Starner
1999-05-18 0:00 ` Clifford J. Nelson
1999-05-18 0:00 ` Florian Weimer
1999-05-18 0:00 ` Larry Kilgallen
1999-05-18 0:00 ` Tucker Taft
1999-05-18 0:00 ` Clifford J. Nelson
1999-05-20 0:00 ` Tom Moran
1999-05-21 0:00 ` Clifford J. Nelson
1999-05-21 0:00 ` Tom Moran
1999-05-21 0:00 ` Clifford J. Nelson
1999-05-21 0:00 ` Tom Moran
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