From: Jon Harrop <jon@jdh30.plus.com>
To: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Memory allocation nano-benchmark.
Date: Thu, 10 Feb 2005 14:56:13 +0000 [thread overview]
Message-ID: <200502101456.13367.jon@jdh30.plus.com> (raw)
In-Reply-To: <420B7A7E.90504@or.uni-bonn.de>
On Thursday 10 February 2005 15:15, Christian Szegedy wrote:
> Let us look at another example where ocaml not really shines:
> ...
I brought this up a while ago. IIRC, performance is poor here because of:
1. Run-time polymorphism in Array.init.
2. Blitting the array twice (once for initialisation, once for filling).
I believe the former could be fixed by running source through a whole-program
preprocessor to remove all polymorphism.
The latter could be addressed by extending the functionality of the GC to
permit extensible arrays. However, this is tricky, error-prone work on a
safety-critical part of the compiler.
PS: Note that this is not a test of "memory allocation" as you state but,
rather, it is mainly a test of the cost of run-time polymorphism. Remove the
polymorphism for a better test of memory allocation.
--
Dr Jon D Harrop, Flying Frog Consultancy Ltd.
next prev parent reply other threads:[~2005-02-10 14:54 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-10 15:15 Christian Szegedy
2005-02-10 14:47 ` [Caml-list] " Frédéric Gava
2005-02-10 15:19 ` skaller
2005-02-10 16:36 ` Frédéric Gava
2005-02-10 17:56 ` Frédéric Gava
2005-02-10 19:56 ` Christian Szegedy
2005-02-10 23:58 ` Frédéric Gava
2005-02-11 9:22 ` Frédéric Gava
2005-02-11 13:04 ` skaller
2005-02-11 13:33 ` skaller
2005-02-11 21:07 ` Oliver Bandel
2005-02-12 0:44 ` skaller
2005-02-15 14:17 ` Frédéric Gava
2005-02-15 19:19 ` Christian Szegedy
2005-02-15 20:51 ` Jon Harrop
2005-02-16 8:19 ` Ville-Pertti Keinonen
2005-02-16 9:54 ` Jon Harrop
2005-02-16 10:56 ` Ville-Pertti Keinonen
2005-02-11 0:55 ` skaller
2005-02-10 14:56 ` Jon Harrop [this message]
2005-02-10 15:32 ` Ville-Pertti Keinonen
2005-02-10 14:59 ` John Prevost
2005-02-10 16:50 ` Marwan Burelle
2005-02-10 19:20 ` Christian Szegedy
2005-02-10 19:40 ` Jon Harrop
2005-02-11 11:26 ` Oliver Bandel
2005-02-12 13:42 ` Christian Szegedy
2005-02-11 1:04 ` skaller
2005-02-11 11:28 ` Oliver Bandel
2005-02-12 0:01 ` Guillaume
2005-02-12 0:36 ` skaller
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