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From: Jon Harrop <jon@ffconsultancy.com>
To: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] OC4MC : OCaml for Multicore architectures
Date: Fri, 25 Sep 2009 00:28:57 +0100	[thread overview]
Message-ID: <200909250028.57186.jon@ffconsultancy.com> (raw)
In-Reply-To: <4d1b2df20909240738g1ba80204ra8cd138ef5c58956@mail.gmail.com>

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.

-- 
Dr Jon Harrop, Flying Frog Consultancy Ltd.
http://www.ffconsultancy.com/?e


  parent reply	other threads:[~2009-09-24 23:17 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 [this message]
2009-09-24 23:25       ` Philippe Wang
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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