From: "David McClain" <dmcclain1@mindspring.com>
To: <caml-list@inria.fr>
Subject: [Caml-list] OCaml Speed for Block Convolutions
Date: Mon, 4 Jun 2001 06:25:23 -0700 [thread overview]
Message-ID: <002f01c0ecf9$d028a3b0$210148bf@dylan> (raw)
....well, I hate to say this... but I did recode the innermost loop in C and
it now runs more than 5 times faster... Straight recoding into C bought 4x,
and using better math brought that up to 5x.
I think the big thing here is that the OCaml code was producing huge amounts
of garbage, despite preallocated buffers with which all the processing was
reading and writing data. The ancillary closures and tuple args were just
eating my shirt...
- DM
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next reply other threads:[~2001-06-04 13:23 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-04 13:25 David McClain [this message]
2001-06-04 19:51 ` William Chesters
2001-06-04 20:05 ` Chris Hecker
2001-06-04 20:15 ` David McClain
2001-06-04 22:34 ` Markus Mottl
2001-06-06 20:13 ` William Chesters
2001-06-06 22:29 ` Chris Hecker
2001-06-07 7:42 ` William Chesters
2001-06-05 7:22 ` Chris Hecker
2001-06-06 6:27 ` David McClain
2001-06-04 22:14 ` Tom _
2001-06-04 22:57 ` Chris Hecker
2001-06-05 2:52 ` Brian Rogoff
2001-06-05 15:02 ` Stefan Monnier
2001-06-05 10:48 ` Tom _
2001-06-06 2:03 ` Hugo Herbelin
2001-06-06 4:04 ` Charles Martin
2001-06-06 18:25 ` William Chesters
2001-06-06 18:35 ` William Chesters
2001-06-06 18:40 ` Patrick M Doane
2001-06-07 1:50 ` Hugo Herbelin
2001-06-07 18:20 ` Tom _
2001-06-07 23:49 ` [Caml-list] let mutable (was OCaml Speed for Block Convolutions) Jacques Garrigue
2001-06-08 0:20 ` [Caml-list] Currying in Ocaml Mark Wotton
2001-06-08 10:13 ` Anton Moscal
[not found] ` <Pine.LNX.4.21.0106081015000.1167-100000@hons.cs.usyd.edu.a u>
2001-06-08 0:38 ` Chris Hecker
2001-06-08 8:25 ` [Caml-list] let mutable (was OCaml Speed for Block Convolutions) Ohad Rodeh
2001-06-08 15:21 ` Brian Rogoff
2001-06-08 17:30 ` Pierre Weis
2001-06-08 18:36 ` Stefan Monnier
2001-06-08 19:07 ` Pierre Weis
2001-06-08 19:30 ` Michel Quercia
2001-06-11 6:42 ` [Caml-list] should "a.(i)" be a reference? (was "let mutable") Judicaël Courant
2001-06-11 13:42 ` [Caml-list] let mutable (was OCaml Speed for Block Convolutions) Pierre Weis
2001-06-12 3:21 ` Jacques Garrigue
2001-06-12 7:43 ` Pierre Weis
2001-06-12 8:31 ` Jacques Garrigue
2001-06-12 13:15 ` Georges Brun-Cottan
2001-06-12 21:54 ` John Max Skaller
2001-06-15 9:55 ` Michael Sperber [Mr. Preprocessor]
-- strict thread matches above, loose matches on Subject: below --
2001-06-01 18:38 [Caml-list] OCaml Speed for Block Convolutions David McClain
2001-06-01 22:51 ` Tom _
2001-06-02 0:10 ` Stefan Monnier
2001-06-04 10:12 ` Jacques Garrigue
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