Bruce Eckel and Guido van Rossum have recently had some discussion here (link) where Parallel Python is specifically mentioned, and also here (link).  Guido appears to say "Parallelize in C/C++, not Python" and Bruce points to Parallel Python in the first link.

Based on the past three hours of research and testing (for example, even read-only 'anonymous' memory mapped mmap objects won't pickle), in my opinion shared memory isn't going to happen in Python in an OS-agnostic way anytime this decade.  It might be done in a special module or code on a given OS though.

     James

My thought was that if the mmap object can be pickled, it can be passed to workers and all processes access the same shared memory.  I wanted to pass the mapping, not the shared memory itself.  I've never used mmap before.

     James