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From: "Ilmari Heikkinen" <ilmari.heikkinen@gmail.com>
To: caml-list@yquem.inria.fr
Subject: OCaml image blending performance
Date: Wed, 6 Feb 2008 22:29:05 +0200	[thread overview]
Message-ID: <854c25eb0802061229o34a6155dncca9d8492cfe6932@mail.gmail.com> (raw)

Hi,

I was writing some image blending operations to get to grips with OCaml,
and wrote the same code in C as well. Asking (and receiving) advice for
optimizing the code on freenode #ocaml, I was told to post the code here
as it might be an interesting compiler test.

The C and Caml versions don't produce the same results, but should
have the same amount of computation (don't take my word for it though,
I don't know why the results differ.)

The source files are:
 http://glimr.rubyforge.org/cake/blend.ml
 http://glimr.rubyforge.org/cake/blend2.ml
 http://glimr.rubyforge.org/cake/blend.c

Or as a tarball:

wget http://glimr.rubyforge.org/cake/blend_test.tar.gz
tar zxf blend_test.tar.gz
cd blend_test
./build.sh

cblend

real	0m1.466s
user	0m1.456s
sys	0m0.008s

blend

real	0m5.463s
user	0m5.456s
sys	0m0.012s

blend2

real	0m3.423s
user	0m3.404s
sys	0m0.012s

Use them as you wish.

--
Ilmari Heikkinen


             reply	other threads:[~2008-02-06 20:29 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-06 20:29 Ilmari Heikkinen [this message]
2008-02-06 22:12 ` [Caml-list] " Pal-Kristian Engstad
2008-02-06 23:30   ` Jon Harrop
2008-02-06 23:34 ` Jon Harrop
2008-02-07 11:01   ` Richard Jones
2008-02-07 11:13     ` Dominique Martinet
2008-02-07 12:29     ` Mauricio Fernandez
2008-02-07 15:04     ` Jon Harrop
     [not found] ` <854c25eb0802070607t4b2ed641xa3bc19e8384ce23@mail.gmail.com>
2008-02-07 14:10   ` Ilmari Heikkinen
2008-02-07 14:08     ` Jon Harrop

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