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[Caml-list] DFT in OCaml vs. C

Issac Trotts
- Fabrice Le Fessant
  - Issac Trotts
- Markus Mottl
  - Issac Trotts
- Xavier Leroy
  - Falk Hueffner
  - David Monniaux
    - Issac Trotts
  - Issac Trotts

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

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