[New-bugs-announce] [issue34059] multiprocessing deadlock

[Guillaume Perrault-Archambault]

New submission from Guillaume Perrault-Archambault <gperr050 at uottawa.ca>:

The simple code attached causes a deadlock in Linux.

Problem is I have to slightly muck around with it depending on the distro and python version to get it to deadlock.

On the cluster I use the most (python 3.6.3, CentOS Linux release 7.4.1708, pytorch 0.4.0 with no CUDA), the code attached causes a deadlock.

----------
components: Library (Lib)
files: multiprocess_torch.py
messages: 321146
nosy: gobbedy
priority: normal
severity: normal
status: open
title: multiprocessing deadlock
type: crash
versions: Python 3.6
Added file: https://bugs.python.org/file47673/multiprocess_torch.py

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34059>
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