Version française
Home     About     Download     Resources     Contact us    
Browse thread
[Caml-list] DFT in OCaml vs. C
[ Home ] [ Index: by date | by threads ]
[ Search: ]

[ Message by date: previous | next ] [ Message in thread: previous | next ] [ Thread: previous | next ]
Date: -- (:)
From: Falk Hueffner <falk.hueffner@s...>
Subject: Re: [Caml-list] DFT in OCaml vs. C
Xavier Leroy <xavier.leroy@inria.fr> writes:

> It can be done, but not on a Pentium 3.  Here are my timings:
> 
>                        Pentium 4        Pentium 4 SSE2     Alpha 21264
>                        (2 GHz)          (2 GHz)            (500 MHz)
> 
> C                       20                20                 36
> OCaml (your code)      113                40                 52
> OCaml (variant 1)       90                26                 40
> OCaml (variant 2)       72                38                100

Hmm, on an Alpha with 800 MHz, I measured 25 seconds C versus 69
seconds Ocaml, i. e. a factor of 2.8 instead of 1.4... does your
version contain optimizations for non-i386, too? I'm using 3.06.

-- 
	Falk

-------------------
To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
Beginner's list: http://groups.yahoo.com/group/ocaml_beginners