ZipPy status update

Thomas Wuerthinger thomas.wuerthinger at
Fri Dec 20 14:03:29 PST 2013

Thanks for the update, Wei. This looks great! - thomas

On 20 Dec 2013, at 22:25, Wei Zhang <ndrzmansn at> wrote:

> Hi all,
> I want to give you a short update about the status of ZipPy, the
> Python truffle implementation we've working on at UC Irvine.
> I attached the performance charts that compare ZipPy to the other
> major Python 2 or 3 implementations like CPython and PyPy.
> The best speedup over CPython3.3 so far is over 100x on fannkuchredux.
> Please refer to the link below for more numbers:
> In general, we are getting fairly close to PyPy with a few benchmarks
> running even faster.
> Built-in function specialization and inlining give a substantial boost
> on performance. Thanks to Gulfem Savrun Yeniceri for rewriting all the
> built-ins.
> In terms of optimizations, ZipPy currently uses shape based object
> model, unboxed collection type storage for list and array. I
> implemented inline caching for attribute accesses in Python, but
> still having compilation problems. This is the reason why I didn't
> include more object intensive benchmarks like richards.
> We also plan to apply some specific optimizations for Python generators.
> Hope you all have a great holiday!
> Thanks,
> /Wei

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