On 5 April 2013 03:29, John Ladasky <john_lada...@sbcglobal.net> wrote:
> I'm revisiting a project that I haven't touched in over a year. It was > written in Python 2.6, and executed on 32-bit Ubuntu 10.10. I experienced > a 20% performance increase when I used Psyco, because I had a > computationally-intensive routine which occupied most of my CPU cycles, and > always received the same data type. (Multiprocessing also helped, and I > was using that too.) > > I have now migrated to a 64-bit Ubuntu 12.10.1, and Python 3.3. I would > rather not revert to my older configuration. That being said, it would > appear from my initial reading that 1) Psyco is considered obsolete and is > no longer maintained, 2) Psyco is being superseded by PyPy, 3) PyPy doesn't > support Python 3.x, or 64-bit optimizations. > > Do I understand all that correctly? > > I guess I can live with the 20% slower execution, but sometimes my code > would run for three solid days... > If you're not willing to go far, I've heard really, really good things about Numba. I've not used it, but seriously: http://jakevdp.github.io/blog/2012/08/24/numba-vs-cython/. Also, PyPy is fine for 64 bit, even if it doesn't gain much from it. So going back to 2.7 might give you that 20% back for almost free. It depends how complex the code is, though.
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