[Python-3000] Python, int/long and GMP
victor.stinner at haypocalc.com
Fri Sep 28 18:58:29 CEST 2007
On Friday 28 September 2007 18:44:43 you wrote:
> > GMP doesn't have a concept of a non-complex structure. It always
> > allocates memory. (...)
I don't know GMP internals. I thaught that GMP uses an hack for small
> > Also, removing python's caching of integers < 100 as you did in this
> > patch is surely a *huge* killer of performance.
Oh yes, I removed the cache because I would like to quickly get a working
Python version. It took me two weeks to write the patch. It's not easy to get
into CPython source code! And integer is one of the most important type!
> I can vouch for that. Allocation can easily dominate performance. It
> invalidates the rest of the benchmark.
I may also use Python garbage collector for GMP memory allocations since GMP
allows to use my own memory allocating functions.
GMP also has its own reference counter mechanism :-/
Victor Stinner aka haypo
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