On 04/04/2011 11:43 AM, Dag Sverre Seljebotn wrote:
CEP up at http://wiki.cython.org/enhancements/prange
"""
This spec is the result of a number of discussions at Cython workshop
1. Quite a few different ways of expressing parallelism was looked at,
and finally we decided to split the problem in two:
* A simple and friendly solution that covers, perhaps, 80% of the
cases, based on simply replacing range with prange.
* Less friendly solutions for the remaining cases. These cases may
well not even require language support in Cython, or only in indirect
ways (e.g., cdef closures if normal closures are too expensive).
This document focuses exclusively on the former solution and does not
intend to cover all use-cases for parallel programming, only the most
common ones.
"""
Note that me and Mark talked some more on the way to the airport, and
also I got a couple of more ideas afterwards, so everybody interested
should probably take a read even if you were there for discussions.
To be more specific, here's the main post-workshop changes:
* if cython.parallel.firstthreaditer()/lastthreaditer() # Use if-test
in loop for thread setup/teardown
* An idea for implementing threadnum() in a way so that we can drop
the rather complex Context idea.
* More thoughts on firstprivate/lastprivate
Dag Sverre
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