[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Ivan K report at bugs.python.org
Sat May 9 11:27:51 CEST 2015


Ivan K added the comment:

Sorry, forget to answer.

I think I know the reason.

Issue I think placed inside ATLAS library.
Issue not reproducable on Mac OS X because it's have a bit different thread model.

The only single platform is Linux (not tested on Windows btw). So main guess right now that this code fail if scikit-learn are compiled against a singlethread ATLAS. Then paralleling code brokes.

However there is very few information regarding how to build it with Multithreaded ATLAS so I'm still not 100% confident.

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status: closed -> open

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<http://bugs.python.org/issue21162>
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