Hello ! 2010/2/25 Johann Borck <johann.bo...@densedata.com>: > Darren Govoni wrote: >> The nice thing about using Python's process support is that you can >> spawn native Processes that run in separate heaps directly from ONE >> Python Twisted app. Not many running side-by-side, which adds the >> complexity of now coordinating among them (however easy with >> additional protocols like spread). >> >> Inter-Process communication is also supported in Python's new >> multiprocessing package. And again, it can all be orchestrated from a >> single service _instance_. >> >> In my code, I need to run "on the metal" for some tasks and not >> others. Agreed, the event-based reactor threading in Twisted is great. >> But not for all modes of computation. For those, I offload onto OS >> processes directly onto CPU cores. Twisted does not provide a way to >> leverage its API against Python's support for this feature. > But twisted provides this feature *itself*, and has done so long before > the multiprocessing module existed - look at Process Protocol > http://twistedmatrix.com/documents/current/core/howto/process.html and > the stdio stuff: > http://twistedmatrix.com/documents/current/core/examples/stdiodemo.py,
That's exactly what I have done with my application Lunch, and I am very satisfied with the results. It can be distributed on many hosts via SSH ! That comes free with standard IO and process management. You can get the source code from http://svn.sat.qc.ca/trac/lunch Cheers, Alexandre > or, as has been mentioned before, ampoule. Of course, if you get > multiprocess to work with twisted, that's fine, but you're probably > unnecessarily adding complexity to your application while substracting > compatibility with python versions before 2.6 for no good reason, at > least none you mentioned so far. > > regards, > Johann > > _______________________________________________ > Twisted-Python mailing list > Twisted-Python@twistedmatrix.com > http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python > -- Alexandre Quessy http://alexandre.quessy.net/ _______________________________________________ Twisted-Python mailing list Twisted-Python@twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
