how fast is Python?

Michele Simionato mis6 at pitt.edu
Sat Aug 23 13:18:12 CEST 2003


Alex Martelli <aleax at aleax.it> wrote in message news:<qJ%0b.116361$cl3.3506646 at news2.tin.it>...
> Irmen de Jong wrote:
>    ...
> > Nevertheless, a Psyco-optimized piece of Python code
> > that runs as fast as compiled C is still very impressive
> > to me. I know that JIT compiler technology theoretically
> > could produce better optimized code than a static optimizing
> > compiler, but am happy already if it reaches equal level :-)
> 
> If anybody does have an actual example (idealy toy-sized:-)
> where psyco's JIT does make repeatably faster code than a
> C compiler (well-used, e.g. -O3 for gcc, NOT just -O...!-)
> I'd be overjoyed to see it, by the way.
> 
> 
> Alex

Actually, as I posted in the C sharp thread of few weeks ago, on my
machine psyco+psyco was FASTER than C. The numbers quoted are for C
with
option -o, but even for -o3 psyco was still faster and, notice, with
pow(x,2) replacedby x*x in C too. I would be happy if somebody can
reproduce that. Here is the link:

http://groups.google.it/groups?hl=it&lr=&ie=UTF-8&threadm=2259b0e2.0308041106.7ac111cc%40posting.google.com&rnum=1&prev=/groups%3Fhl%3Dit%26lr%3D%26ie%3DISO-8859-1%26q%3Dsimionato%2Bspeed%2Bgroup%253Acomp.lang.python.*%2Bgroup%253Acomp.lang.python.*%26meta%3Dgroup%253Dcomp.lang.python.*

Michele Simionato, Ph. D.
MicheleSimionato at libero.it
http://www.phyast.pitt.edu/~micheles
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