[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Speed of Ocave vs Matlab?
From: |
Carlo De Falco |
Subject: |
Re: Speed of Ocave vs Matlab? |
Date: |
Tue, 8 Sep 2015 09:43:24 +0000 |
On 8 Sep 2015, at 10:01, Alexander Barth <address@hidden> wrote:
>
> On Mon, Sep 7, 2015 at 11:14 PM, Michael Barnes <address@hidden> wrote:
> I just got asked this question at a computer vision conference. Does anyone
> have any benchmark examples I can quote?
>
>
> It strongly depends on the type of benchmark. In my tests, octave turned out
> the be faster than Matlab:
>
> http://www.geosci-model-dev.net/7/225/2014/gmd-7-225-2014.pdf
> (table 4 on page 9, open access journal under creative commons).
>
> The code needs to solve a sparse system defined by a partial differential
> equation. Large-parts of the code are vectorized and the only loops are
> essentially the number of dimensions (which is typically 2 or 3).
>
> I was actually surprised by this results and I did not perform any
> optimization specific to octave. I only vectorized the code which is
> beneficial for octave and Matlab.
>
> In the above mentioned paper, you will however also find some references
> where Matlab was faster than Octave.
>
> The conclusion for me is: if performance is important, you need to vectorize
> the code as much as possible. This is not only necessary for octave but also
> for Matlab. If this is not possible, then I use a compiled language like
> Fortran.
>
> I hope this helps,
> Alex
>
Alexander,
I guess you still have all the scripts to run these tests again?
I would be curiuos to see what is the comparison between Octave 3.6.4 and 4.x,
as a few users reported significant slowdown in some aplications.
c.
- Re: Speed of Octave vs Matlab?, (continued)
Re: Speed of Ocave vs Matlab?, Markus Bergholz, 2015/09/07
Re: Speed of Ocave vs Matlab?, Sebastian Schöps, 2015/09/08
Re: Speed of Ocave vs Matlab?, Alexander Barth, 2015/09/08
- Re: Speed of Ocave vs Matlab?,
Carlo De Falco <=
- Re: Speed of Ocave vs Matlab?, Alexander Barth, 2015/09/08
- Re: Speed of Ocave vs Matlab?, Chechu Garguez, 2015/09/08
- Re: Speed of Ocave vs Matlab?, Alexander Barth, 2015/09/08
- Re: Speed of Ocave vs Matlab?, chechu, 2015/09/09
- Re: Speed of Ocave vs Matlab?, Alexander Barth, 2015/09/09