On Friday, February 28, 2014 1:39:11 PM UTC-6, Mark H. Harris wrote:
> On Friday, February 28, 2014 1:34:27 AM UTC-6, Steven D'Aprano wrote:
>
>
>
> > Now that Python has a fast C implementation of Decimal, I would be happy
>
> > for Python 4000 to default to decimal floats, and require special syntax
>
> > for binary floats. Say, 0.1b if you want a binary float, and 0.1 for a
>
> > decimal.
>
> >
>
> > Steven
>
>
>
> Just a side note on how fast... Stefan Krah's performance specs state 120x
> improvement on many multiplication computations (like PI for instance)...
> well, its not hype.
>
>
>
> On my P7350 dual core 2Ghz Intel box (2009 mac mini) running Gnu/Linux, I
> used the piagm(n) AGM routine from my dmath.py library to benchmark against
> my own C routines, BC, and a couple of other math packages. The results were
> phenomenal... my processor is a low-end gem as compared to modern SOTA
> processors out there, and even yet:
>
>
>
> 1 million digits of PI --- 13 minutes
>
> 10 million digits of PI --- 3 hours 55 minutes
>
Oh, rats(), I forgot the comparison....
Py3.2 [ 1 million digits : 21 hours 21 minutes ] --> Py3.3.4 [ 1 million digits
: 13 minutes ]
... that is astounding. All I did was install 3.3.4, no change in the
AGM routine.
Cheers
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