From: Christophe Raffalli <Christophe.Raffalli@univ-savoie.fr>
To: Doctor Jerri <caml-list@inria.fr>
Subject: Re: [Caml-list] Comparison of OCaml and MLton for numerics
Date: Thu, 31 May 2007 17:15:50 +0200 [thread overview]
Message-ID: <465EE6A6.7050207@univ-savoie.fr> (raw)
In-Reply-To: <5195a210705302250u6a9e5adey4ed857480f9e5cd8@mail.gmail.com>
Yuanchen Zhu a écrit :
>
> let (kx, ky) = kern.(i) in
You should avoid array of tuples of float in OCaml, tuple of float are
(unfortunatly) not unboxed and array of tuple neither, so you have two
inderection (boxes) inside the array.
Either use array of records (you will have one box), one array of double
size or two separate arrays (no boxing at all). The difference should be
quite big (it would be interesting if you post the result).
One of the point of MLTon (if I remember well) is to always unbox
floats ... While in OCaml, you have to be carefull.
I really would like an "unboxed array" type in OCaml rather than a
special optimisation for floats. Then, the solution with an unboxed
array of records would be reasonnable.
Christophe Raffalli
next prev parent reply other threads:[~2007-05-31 15:15 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-31 5:50 Yuanchen Zhu
2007-05-31 6:17 ` [Caml-list] " Jon Harrop
2007-05-31 6:32 ` skaller
2007-05-31 7:31 ` Yuanchen Zhu
2007-05-31 9:08 ` Jon Harrop
2007-05-31 9:22 ` Yuanchen Zhu
2007-05-31 10:27 ` Jon Harrop
2007-05-31 21:30 ` Alain Frisch
2007-06-01 1:22 ` skaller
2007-06-01 1:36 ` Erik de Castro Lopo
2007-06-01 2:21 ` skaller
2007-06-01 2:49 ` Erick Tryzelaar
2007-06-01 3:05 ` skaller
2007-06-01 5:30 ` Alain Frisch
2007-06-01 5:39 ` Jon Harrop
2007-06-01 6:36 ` Yuanchen Zhu
2007-06-01 8:09 ` skaller
2007-06-01 8:53 ` Richard Jones
2007-06-01 8:59 ` Richard Jones
2007-06-01 9:22 ` Stephan Tolksdorf
2007-06-01 9:49 ` Richard Jones
2007-06-01 9:32 ` Stephan Tolksdorf
2007-06-01 10:02 ` skaller
2007-06-01 11:29 ` Yaron Minsky
2007-06-01 11:43 ` Erik de Castro Lopo
2007-06-01 11:58 ` Jon Harrop
2007-06-01 13:49 ` Julien Signoles
2007-06-01 14:18 ` Stephen Weeks
2007-06-01 14:43 ` Julien Signoles
2007-06-01 14:57 ` Brian Hurt
2007-06-01 15:40 ` Alain Frisch
2007-06-01 15:58 ` Brian Hurt
2007-06-01 16:25 ` Markus Mottl
2007-06-01 16:47 ` Jon Harrop
2007-06-01 23:26 ` skaller
2007-06-01 23:49 ` Brian Hurt
2007-06-02 3:26 ` skaller
2007-06-01 12:40 ` Erik de Castro Lopo
2007-06-01 13:56 ` Julien Signoles
2007-06-01 11:49 ` David MENTRE
2007-06-01 14:41 ` skaller
2007-06-01 16:52 ` Jon Harrop
2007-06-01 23:33 ` skaller
2007-06-01 16:14 ` Markus Mottl
2007-06-01 16:46 ` Jon Harrop
2007-06-01 17:13 ` Jon Harrop
2007-06-04 14:03 ` Mike Furr
2007-06-04 14:39 ` Jon Harrop
2007-06-04 15:33 ` Mike Furr
2007-06-04 18:08 ` skaller
[not found] ` <9d3ec8300706041518y115d22bdsa120d4010261d841@mail.gmail.com>
2007-06-04 22:19 ` Fwd: " Till Varoquaux
2007-06-04 23:40 ` Jon Harrop
2007-06-05 2:24 ` skaller
2007-06-04 22:44 ` Pierre Etchemaïté
2007-06-05 1:42 ` Jon Harrop
2007-06-05 10:30 ` Jon Harrop
2007-06-10 12:10 ` Jon Harrop
2007-06-10 12:58 ` skaller
2007-06-01 14:15 ` Stephen Weeks
2007-06-01 14:37 ` Brian Hurt
2007-06-01 14:39 ` Eric Cooper
2007-05-31 9:24 ` Yuanchen Zhu
2007-05-31 10:25 ` Loup Vaillant
2007-05-31 10:30 ` Jon Harrop
2007-05-31 12:12 ` skaller
2007-05-31 7:11 ` Daniel Bünzli
2007-05-31 15:15 ` Christophe Raffalli [this message]
2007-05-31 15:23 ` Jon Harrop
2007-05-31 15:35 ` Christophe Raffalli
[not found] ` <604682010705310923o5a1ee0eiee5ae697da9d3c60@mail.gmail.com>
2007-05-31 20:14 ` Stephen Weeks
2007-05-31 15:16 ` Christophe Raffalli
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