From: Florian Hars <hars@bik-gmbh.de>
To: caml-list@inria.fr
Cc: jon@ffconsultancy.com
Subject: Re: [Caml-list] Re: Mini ray tracer
Date: Wed, 04 May 2005 08:24:22 +0200 [thread overview]
Message-ID: <42786A96.3030204@bik-gmbh.de> (raw)
In-Reply-To: <slrnd7d1d1.dg5.brown@panic.cs.bris.ac.uk>
Julian Brown wrote:
>> Re:
>
> http://www.ffconsultancy.com/free/ray_tracer/comparison.html
>
> Interesting results, but it's kind of unfair to leave optimisation turned
> off for g++!
I did some comparisions (the ml code on that page doesn't compile, but the
fix is trivial) and told gcc 3.3.5 to actually optimize the c++ (-O2
-march=x86-64 -msse2 -ffast-math) and the c++ was consistently faster than the
ocaml code for detail levels of 4 and greater, marginally at 4, about 20% at a
level of 10, twice as fast at 12, and infinitely faster at a level of 14 (the
c++ program finished in less than three minutes, the ocaml program started to
trigger the oom killer after about an hour, and I finally had to push the
friendly red button labeled "reset" to get my computer back).
This looks like a suboptimal example for the speed of ocaml.
Yours, Florian.
next prev parent reply other threads:[~2005-05-04 6:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-28 9:37 Jon Harrop
2005-05-02 19:48 ` Julian Brown
2005-05-03 22:47 ` [Caml-list] " Jon Harrop
2005-05-04 6:24 ` Florian Hars [this message]
2005-05-04 7:27 ` Jon Harrop
2005-05-04 11:22 ` Jon Harrop
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