From: Chris Hecker <checker@d6.com>
To: David McClain <dmcclain1@mindspring.com>, caml-list@inria.fr
Subject: Re: [Caml-list] OCaml Speed for Block Convolutions
Date: Tue, 05 Jun 2001 00:22:03 -0700 [thread overview]
Message-ID: <4.3.2.7.2.20010605002003.027deaa0@shell16.ba.best.com> (raw)
In-Reply-To: <002a01c0ed33$0b3d5de0$210148bf@dylan>
>I think the constant creation of new arrays to hold intermediate results
>(i.e., immutable data) is costing too much. Many of the intermediate values
>could be overwritten in place and save a lot of time.
>... of course... don't ask how long it took to write all this stuff in the
>inner loops of the convolution in C, nor how long it took to debug that
>stuff.... And immutable data definitely helps to get the code correct. OCaml
>still rules!
I think I'm missing something. The ocaml loops allocate memory for temps, but the C loops reuse storage? Did you do a version for ocaml that's got the same level of optimizations as the C version (not allocating, etc.)?
If the code's not to big, could you post it?
Chris
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next prev parent reply other threads:[~2001-06-05 17:31 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-04 13:25 David McClain
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 [this message]
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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