From: Martin Krischik <krischik@users.sourceforge.net>
Subject: Re: 'Base
Date: Mon, 12 Dec 2005 20:08:34 +0100
Date: 2005-12-12T20:08:34+01:00 [thread overview]
Message-ID: <3009058.VDBX7uInMf@linux1.krischik.com> (raw)
In-Reply-To: wvbrwtia65j5.fsf@sun.com
Ole-Hjalmar Kristensen wrote:
> My gut reaction was also that Ada will always outperform Java, but I
> have found at least one case there this is not true. I recently wrote
> a simple test program to transpose a two-dimensional array in Java,
> Ada, C++, and C. The purpose was not really to compare languages, but
> to see the effects of caching. There were two different alogrithms
> used, one a simple nested loop, the other a recursive subdivision with
> a nested loop at the lowest level. When the simple nested loop was
> tested with large data sets (~ available RAM on the machines) the
> diffence between Ada, C, and C++ was insignificant, all being 3-4
> times faster than Java. However, when testing the recursive version, I
> found that Java was actually about 10% faster than the other three,
> which again came extremely close to each other. Apparently the JIT
> compiler had plenty of time to do its work and come up with pretty
> optimal code. The other interesting result from the experiment was
> that the recursive version was from 3-4 to 20 times faster than the
> simple nested loop.
Interesting.
Martin
--
mailto://krischik@users.sourceforge.net
Ada programming at: http://ada.krischik.com
next prev parent reply other threads:[~2005-12-12 19:08 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-08 15:21 'Base ada_student
2005-12-08 18:08 ` 'Base Matthew Heaney
2005-12-08 18:44 ` 'Base Martin Dowie
2005-12-08 18:49 ` 'Base Martin Dowie
2005-12-08 19:24 ` 'Base Matthew Heaney
2005-12-08 20:27 ` 'Base Martin Dowie
2005-12-08 19:51 ` 'Base Jeffrey R. Carter
2005-12-08 20:07 ` 'Base Matthew Heaney
2005-12-09 2:57 ` 'Base Randy Brukardt
2005-12-09 2:13 ` Avoiding constraint checks w/ 'Base Anonymous Coward
2005-12-09 3:11 ` Randy Brukardt
2005-12-09 13:11 ` 'Base krischik
2005-12-09 13:52 ` 'Base Matthew Heaney
2005-12-09 20:42 ` 'Base Randy Brukardt
2005-12-08 19:11 ` 'Base Martin Krischik
2005-12-09 20:42 ` 'Base ada_student
2005-12-09 21:39 ` 'Base Pascal Obry
2005-12-10 3:30 ` 'Base Matthew Heaney
2005-12-10 14:50 ` 'Base ada_student
2005-12-10 7:52 ` 'Base Martin Krischik
2005-12-10 12:55 ` 'Base Larry Kilgallen
2005-12-10 13:37 ` 'Base Björn Persson
2005-12-11 11:00 ` 'Base Martin Krischik
2005-12-10 15:01 ` 'Base Robert A Duff
2005-12-11 10:59 ` 'Base Martin Krischik
2005-12-12 9:14 ` 'Base Ole-Hjalmar Kristensen
2005-12-12 19:08 ` Martin Krischik [this message]
2005-12-13 19:24 ` 'Base tmoran
2005-12-13 21:00 ` 'Base Georg Bauhaus
2005-12-14 19:43 ` 'Base Per Sandberg
2005-12-15 20:08 ` 'Base Martin Krischik
2005-12-16 19:19 ` 'Base Jeffrey R. Carter
2005-12-17 7:52 ` 'Base Martin Krischik
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