On Mon, Mar 8, 2010 at 4:32 PM, Maciej Fijalkowski <fij...@gmail.com> wrote:
>>
>> Try divisors() from sympy/ntheory/factor_.py. I tried that with Cython
>> (pure Python mode, so that you have the same source code, that works
>> both in Python and in Cython) and I forgot which speedup I got, but at
>> least 10x, maybe up to 25x. Should be in the archives of this list.
>>
>> Ondrej
>>
>
> On pure integers like this::
>
> divisors(10000000)
>
> times on my test machine are 1.12s for cpython, 0.091 for pypy (that's
> 12x speedup).
>
> on divisors(Integer(10000000)) speedups are less impressive (5s for
> CPython, 3s for PyPy).
>
> Which one did you try on Cython?

Here are all the details:

http://groups.google.com/group/sympy/browse_thread/thread/4eaf42ba165a2fed/b0948473d159cd50

(the google groups are currently down..., but it will be back up
hopefully later today)

Ondrej

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