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Re: compare the executive speed with Matlab
From: |
Sergei Steshenko |
Subject: |
Re: compare the executive speed with Matlab |
Date: |
Fri, 2 Jan 2009 10:20:04 -0800 (PST) |
--- On Fri, 1/2/09, Michael Goffioul <address@hidden> wrote:
> From: Michael Goffioul <address@hidden>
> Subject: Re: compare the executive speed with Matlab
> To: "Howard" <address@hidden>
> Cc: address@hidden
> Date: Friday, January 2, 2009, 6:31 AM
> It's usually much appreciated that such comment comes
> with a concrete example demonstrating the problem.
>
> Saying "octave is slow" is quite vague and nobody
> will
> try to help you, because we just can't figure out why
> octave is slow for you. Saying "octave is slower than
> Matlab on this piece of code" is much more helpful.
>
> Michael.
>
Well, IIRC, if I need to calculate, say, 'sin' function for a vector of
~150000 elements, 'octave' speed is ~5 times slower than the one of the
equivalent code in "C".
Of course, I'm not talking about using loops in 'octave' - just a plain
simple operation on vector.
Since I've discovered this I "outsource" such stuff to "C", i.e. I find it
more efficient for what I need to do to invest extra effort in writing
the needed code in "C".
I mean, I'm trying to implement in 'octave' relatively complex algorithmic
stuff, and where possible to use "C" for straightforward massive
calculations.
Regards,
Sergei.
- compare the executive speed with Matlab, Howard, 2009/01/01
- Re: compare the executive speed with Matlab, Michael Goffioul, 2009/01/02
- Re: compare the executive speed with Matlab,
Sergei Steshenko <=
- Re: compare the executive speed with Matlab, John W. Eaton, 2009/01/02
- Re: compare the executive speed with Matlab, Sergei Steshenko, 2009/01/02
- Re: compare the executive speed with Matlab, Jordi GutiƩrrez Hermoso, 2009/01/02
- Re: compare the executive speed with Matlab, Sergei Steshenko, 2009/01/02
- Re: compare the executive speed with Matlab, John W. Eaton, 2009/01/02
- Re: compare the executive speed with Matlab, Jordi GutiƩrrez Hermoso, 2009/01/02
- Re: compare the executive speed with Matlab, Sergei Steshenko, 2009/01/02
- Re: compare the executive speed with Matlab, John W. Eaton, 2009/01/02
- Re: compare the executive speed with Matlab, Sergei Steshenko, 2009/01/02
- Re: compare the executive speed with Matlab, wim van hoydonck, 2009/01/02