Author: Antonio Cuni <anto.c...@gmail.com> Branch: extradoc Changeset: r5530:5d0633b2f4f8 Date: 2015-04-16 17:29 +0200 http://bitbucket.org/pypy/extradoc/changeset/5d0633b2f4f8/
Log: first part of the slides diff --git a/talk/pycon-italy-2015/speed.png b/talk/pycon-italy-2015/speed.png new file mode 100644 index 0000000000000000000000000000000000000000..e2372b9e0d5fc3fe7711b27d641d2d9706185fd3 GIT binary patch [cut] diff --git a/talk/pycon-italy-2015/talk.rst b/talk/pycon-italy-2015/talk.rst --- a/talk/pycon-italy-2015/talk.rst +++ b/talk/pycon-italy-2015/talk.rst @@ -16,10 +16,90 @@ - http://antocuni.eu -PyPy status ----------------- +What is PyPy +--------------- -bla bla +- Alternative, fast Python implementation + +- Performance: JIT compiler, advanced GC + +- STM: goodbye GIL + +- PyPy 2.5.1 (2.7.8) + +- Py3k as usual in progress (3.2.5 out, 3.3 in development) + +- http://pypy.org + + +STM +--- + +- pypy-stm-2.5.1 is out + + * 64 bit Linux only + +- no GIL! + +- 25-40% slowdown for single core programs + + * still ``7*0.75 = 5.25x`` faster than CPython :) + +- parallelism up to 4 threads + +- concurrency slow-but-correct by default + + * compared to fast-but-buggy by using threads + +- conflict detection + +- TransactionQueue: parallelize your program without using threads! + + +Extension modules +------------------ + +- CFFI: stable, mature and widely used + + * psycopg2cffi, lxml-cffi, pysdl2-cffi, etc. + + * should be used even for CPython-only projects! + +- numpy: + + * support for linalg + + * support for pure Python, JIT friendly ufuncs + + * object dtype in-progress + +- scipy: see next slide :) + + +Pymetabiosis +-------------- + +- embed CPython in PyPy + +- import and use CPython modules in PyPy + +- ALPHA status + +- slow when passing arbitrary objects + +- but fast for numpy arrays + +- matplotlib and scipy works + +- https://github.com/rguillebert/pymetabiosis + + + +Speed: 7x faster than CPython +------------------------------- + +.. image:: speed.png + :scale: 47% Contacts, Q&A _______________________________________________ pypy-commit mailing list pypy-commit@python.org https://mail.python.org/mailman/listinfo/pypy-commit
