speed of python vs matlab.

[Aidan Steele]

On 13 Dec 2006 16:07:20 -0800, Chao <devincyu at gmail.com> wrote:
>
> I've been trying to develop some numerical codes with python, however
> got disappointed.
>
> A very simple test,
>
> a = 1.0
>
> for i in range(1000):
>      for j in range(1000):
>            a = a+1
>
> unfortunately, it took 4.5 seconds to finish(my machines is fine. P4
> 3.0G, 1G RAM, it varies according to machine configuration, but should
> be in the same level)
>
> for matlab, the same operation took 0.1 seconds,
>
> I use numpy & scipy, they solve the problem most of the times, but
> there are cases you can't avoid loops by vectors. I appreciate the
> elegancy of python so much, but I guess I have to gave it up in these
> numerical codes.(image processing algorithms),  for application
> dev/scripting, it's still my first choice.
>
> A good news is that the same code takes ruby 9.8 seconds.
>
> --
> http://mail.python.org/mailman/listinfo/python-list


Have you considered looking into Psyco? (http://psyco.sourceforge.net/) For
all the numeric operations that image processing algorithms entail, such a
tool will probably make a tremendous difference in terms of speed of
execution for you. Do yourself a favour and check it out.

Hope this helps,
Aidan Steele.
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