From: "Will M. Farr" <farr@MIT.EDU>
To: skaller@users.sourceforge.net
Cc: "O'Caml Mailing List" <caml-list@inria.fr>,
Christophe TROESTLER <Christophe.Troestler@umh.ac.be>
Subject: Re: [Caml-list] [Benchmark] NBody
Date: Mon, 7 Feb 2005 20:48:16 -0500 [thread overview]
Message-ID: <80eb59bd970cd828d562f79e8eb565bf@mit.edu> (raw)
In-Reply-To: <1107826151.13571.199.camel@pelican.wigram>
Doesn't caml store records whose types are all floats as a float array
anyway? I thought I remembered this optimization going by in the
manual somewhere.
Will
On 7 Feb 2005, at 8:29 PM, skaller wrote:
> On Tue, 2005-02-08 at 05:57, Christophe TROESTLER wrote:
>
>
>> type planet = {
>> mutable x : float; mutable y : float; mutable z : float;
>> mutable vx: float; mutable vy: float; mutable vz: float;
>> mass : float;
>> }
>
> Advice from old FORTRAN hacker:
>
> This is a bad data structure for Ocaml.
>
> Try using an unboxed float array of 7 times the length instead,
> this will eliminate boxing, eliminate write barriers,
> eliminate garbage collection, reduce memory requirements.
>
>
> --
> John Skaller, mailto:skaller@users.sf.net
> voice: 061-2-9660-0850,
> snail: PO BOX 401 Glebe NSW 2037 Australia
> Checkout the Felix programming language http://felix.sf.net
>
>
>
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next prev parent reply other threads:[~2005-02-08 1:48 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-07 18:57 Christophe TROESTLER
2005-02-07 19:16 ` [Caml-list] " Will M. Farr
2005-02-07 19:36 ` Christophe TROESTLER
2005-02-07 19:55 ` Will M. Farr
2005-02-08 10:34 ` Olivier Andrieu
2005-02-08 10:52 ` Micha
2005-02-07 20:16 ` Markus Mottl
2005-02-07 19:37 ` Martin Jambon
2005-02-07 19:46 ` Christophe TROESTLER
2005-02-07 20:22 ` Martin Jambon
2005-02-07 20:04 ` sejourne_kevin
2005-02-07 20:32 ` Robert Roessler
2005-02-07 22:57 ` Oliver Bandel
2005-02-08 1:29 ` skaller
2005-02-08 1:48 ` Will M. Farr [this message]
2005-02-08 9:01 ` Ville-Pertti Keinonen
2005-02-08 9:37 ` skaller
2005-02-08 10:10 ` Ville-Pertti Keinonen
2005-02-08 16:36 ` skaller
2005-02-08 12:04 ` Marcin 'Qrczak' Kowalczyk
2005-02-08 17:06 ` skaller
2005-02-08 10:25 ` Xavier Leroy
2005-02-08 18:34 ` skaller
2005-02-08 10:43 ` Xavier Leroy
2005-02-08 11:26 ` Ville-Pertti Keinonen
2005-02-08 15:59 ` Florian Hars
2005-02-13 16:40 ` Christoph Bauer
2005-02-13 18:13 ` Christophe TROESTLER
2005-02-24 22:18 ` NBody (one more question) Christophe TROESTLER
2005-02-25 17:06 ` [Caml-list] " John Carr
2005-02-25 17:17 ` Christophe TROESTLER
2005-02-26 16:08 ` John Carr
2005-02-25 17:24 ` Ken Rose
2005-02-25 17:42 ` Oliver Bandel
2005-02-25 17:57 ` Xavier Leroy
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