[issue5331] multiprocessing hangs when Pool used within Process

Jesse Noller added the comment: Committed in r73708 on trunk -- resolution: -> fixed status: open -> closed ___ Python tracker ___ __

[issue5331] multiprocessing hangs when Pool used within Process

Jesse Noller added the comment: Patch attached to issue 5313, please review -- ___ Python tracker ___ ___ Python-bugs-list mailing lis

[issue5331] multiprocessing hangs when Pool used within Process

OG7 added the comment: It seems the root cause is at http://bugs.python.org/issue5155 . A workaround is to use a duplex Pipe in SimpleQueue. -- ___ Python tracker ___ ___

[issue5331] multiprocessing hangs when Pool used within Process

Gabriel de Perthuis added the comment: Apparently the pool workers die all at once, just after the pool creates them and before the pool is used. I added a few lines to multiprocessing/pool.py to get the stack and the exception backtrace. except (EOFError, IOError): import t

[issue5331] multiprocessing hangs when Pool used within Process

Changes by Jesse Noller : -- priority: -> normal ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.py

[issue5331] multiprocessing hangs when Pool used within Process

Changes by Benjamin Peterson : -- assignee: -> jnoller nosy: +jnoller ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubsc

[issue5331] multiprocessing hangs when Pool used within Process

David W. Lambert added the comment: Fails also on this system. $ p3 Python 3.0.1 (r301:69556, Feb 13 2009, 23:52:55) [GCC 3.4.6 20060404 (Red Hat 3.4.6-3)] on linux2 (...) >>> # use both hangs (...) >>> p.start() >>> p.join() (hmm la do diii laaa...)^C Traceback (most recent call last): F

[issue5331] multiprocessing hangs when Pool used within Process

New submission from mike bayer : this occurs for me running on Mac OSX Leopard. The equivalent code using "processing" in python 2.5 works fine, which is how I found this bug - my code hung when upgraded to 2.6.Basically initiating a multiprocessing.Pool inside of multiprocessing.Process ha