[Python-Dev] STM and python

Benjamin Peterson benjamin at python.org
Wed Nov 30 16:25:20 CET 2011

2011/11/30 Matt Joiner <anacrolix at gmail.com>:
> Given GCC's announcement that Intel's STM will be an extension for C
> and C++ in GCC 4.7, what does this mean for Python, and the GIL?
> I've seen efforts made to make STM available as a context, and for use
> in user code. I've also read about the "old attempts way back" that
> attempted to use finer grain locking. The understandably failed due to
> the heavy costs involved in both the locking mechanisms used, and the
> overhead of a reference counting garbage collection system.
> However given advances in locking and garbage collection in the last
> decade, what attempts have been made recently to try these new ideas
> out? In particular, how unlikely is it that all the thread safe
> primitives, global contexts, and reference counting functions be made
> __transaction_atomic, and magical parallelism performance boosts
> ensue?

Have you seen http://morepypy.blogspot.com/2011/08/we-need-software-transactional-memory.html


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