From: Philippe Wang <philippe.wang@lip6.fr>
To: Jon Harrop <jon@ffconsultancy.com>
Cc: Philippe Wang <philippe.wang@lip6.fr>, caml-list@yquem.inria.fr
Subject: Re: [Caml-list] OC4MC : OCaml for Multicore architectures
Date: Fri, 25 Sep 2009 01:25:34 +0200 [thread overview]
Message-ID: <072B557D-6924-4339-AF8A-98FC187DB753@lip6.fr> (raw)
In-Reply-To: <200909250028.57186.jon@ffconsultancy.com>
On Sep 25, 2009, at 1:28 AM, Jon Harrop wrote:
> On Thursday 24 September 2009 15:38:06 Philippe Wang wrote:
>> Very few programs that are not written with multicore in mind would
>> not be penalized.
>> I mean our GC is much much dumber than INRIA OCaml's one.
>> Our goal was to show it was possible to have good performance with
>> multicores for OCaml.
>> Maybe someday we'll find some time to optimize the GC, but it's
>> likely
>> not very soon.
>
> Just to quantify this with a data point: the fastest (serial)
> version of my
> ray tracer benchmark is 10x slower with the new GC. However, this is
> anomalous with respect to complexity and the relative performance is
> much
> better for simpler renderings. For example, the new GC is only 1.7x
> slower
> with n=6 instead of n=9.
Can you tell what data structures (and their sizes if possible) you
are using?
Thanks for your feedbacks.
--
Philippe Wang
Philippe.Wang@lip6.fr
http://www-apr.lip6.fr/~pwang/
next prev parent reply other threads:[~2009-09-24 23:25 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-22 21:30 Philippe Wang
2009-09-23 10:53 ` [Caml-list] " Goswin von Brederlow
2009-09-23 12:21 ` Jon Harrop
2009-09-23 13:00 ` Jon Harrop
2009-09-23 14:26 ` Philippe Wang
2009-09-24 0:21 ` Jon Harrop
2009-09-23 23:15 ` Philippe Wang
2009-09-24 0:05 ` Jon Harrop
2009-09-24 0:01 ` Philippe Wang
2009-09-24 1:47 ` Jon Harrop
2009-09-24 9:49 ` Richard Jones
2009-09-24 10:00 ` rixed
2009-09-24 10:40 ` Florian Hars
2009-09-24 11:45 ` Jon Harrop
2009-09-24 10:00 ` kcheung
2009-09-24 11:52 ` Jon Harrop
2009-09-24 11:55 ` Rakotomandimby Mihamina
2009-09-24 12:11 ` rixed
2009-09-24 15:58 ` Jon Harrop
2009-09-24 12:39 ` Stefano Zacchiroli
2009-09-24 13:09 ` Jon Harrop
2009-09-24 16:49 ` Richard Jones
2009-09-24 16:56 ` Philippe Wang
2009-09-24 17:36 ` Richard Jones
2009-09-24 19:39 ` rixed
2009-09-24 21:09 ` Jon Harrop
2009-09-24 21:26 ` rixed
2009-09-25 4:07 ` Jacques Garrigue
2009-09-25 7:32 ` Hugo Ferreira
2009-09-25 10:17 ` Jon Harrop
2009-09-25 13:04 ` kcheung
2009-09-25 21:39 ` Gerd Stolpmann
2009-09-25 9:33 ` Philippe Wang
2009-09-25 21:39 ` Jon Harrop
2009-09-26 16:55 ` Jon Harrop
2009-09-25 8:08 ` Stéphane Glondu
2009-09-25 15:05 ` Xavier Leroy
2009-09-25 23:26 ` Benjamin Canou
2009-09-26 0:45 ` kcheung
2009-09-26 1:53 ` Jon Harrop
2009-09-26 13:51 ` kcheung
2009-09-26 14:46 ` Jon Harrop
2009-10-10 4:01 ` Jon Harrop
2009-09-24 13:40 ` Rakotomandimby Mihamina
2009-09-24 14:22 ` Philippe Wang
2009-09-24 14:49 ` Stefano Zacchiroli
2009-09-24 13:55 ` Mike Lin
2009-09-24 14:52 ` Stefano Zacchiroli
2009-09-24 15:36 ` Philippe Wang
2009-09-24 15:50 ` Jon Harrop
2009-09-24 12:14 ` Philippe Wang
2009-09-24 13:11 ` Jon Harrop
2009-09-24 14:51 ` Philippe Wang
2009-09-24 14:57 ` Philippe Wang
2009-09-24 14:11 ` Dario Teixeira
2009-09-24 14:38 ` Philippe Wang
2009-09-24 15:20 ` Dario Teixeira
2009-09-24 23:28 ` Jon Harrop
2009-09-24 23:25 ` Philippe Wang [this message]
2009-09-25 14:11 ` Philippe Wang
2009-11-08 18:12 ` Jon Harrop
2009-09-24 18:24 ` David Teller
[not found] <20090924154716.BCD0ABC5A@yquem.inria.fr>
2009-09-24 16:02 ` Pascal Cuoq
2009-09-24 16:30 ` Philippe Wang
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