From: Jon Harrop <jon@ffconsultancy.com>
To: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] OCaml image blending performance
Date: Thu, 7 Feb 2008 14:08:31 +0000 [thread overview]
Message-ID: <200802071408.31568.jon@ffconsultancy.com> (raw)
In-Reply-To: <854c25eb0802070610t1e050875y10de0092f9eb7c4e@mail.gmail.com>
On Thursday 07 February 2008 14:10:22 Ilmari Heikkinen wrote:
> On Feb 7, 2008 1:34 AM, Jon Harrop <jon@ffconsultancy.com> wrote:
> > In this case, most of the speed loss can be regained by simply
> > aggressively inlining everything, which is exactly what you (ab)used C
> > macros for in the C code.
>
> The C macros were more about making the code shorter by emulating HOFs,
> blend2.ml does inline everything. Coming within 2x of C with no major
> hackery on this sort of code is impressive though.
Getting within 2x of C is often regarded as disappointing in the OCaml
community. :-)
I've played with some similar int-intensive algorithms and never managed to
get close to C. OCaml's float performance is where it really shines.
--
Dr Jon D Harrop, Flying Frog Consultancy Ltd.
http://www.ffconsultancy.com/products/?e
prev parent reply other threads:[~2008-02-07 14:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-06 20:29 Ilmari Heikkinen
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 [this message]
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