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It seems that all my processes has been halted for ~ 4 hours at the time of the screenshot below, since I was running several machine learning experiments with tmux, and I found there has been no output to stdout anymore since 4 hours. I try to start a new experiment, but as well there is no output to stdout although i can find the new process with htop. Besides, I can not stop the new experiment with control+C, i can only kill it in htop, and from stdout i confirm it is also killed.

I also discovered this seems to be caused by the tool python invoke,

http://docs.pyinvoke.org/en/stable/

since if I do not use invoke to start an experiment with inv debug, but simply use

python main.py --debug

The new process can be started, although it also get halted in between.

Any clue what have happened and are there any ways to avoid or reduce this? Thanks!

enter image description here

system info:

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.5 LTS
Release:        18.04
Codename:       bionic

python

Python 3.7.6 (default, Jan  8 2020, 19:59:22)
[GCC 7.3.0] :: Anaconda, Inc. on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import invoke
>>> invoke.__version__
'1.5.0'
sunxd
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1 Answers1

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It seems that simply killing some processes will renew the long halted remaining tasks.

sunxd
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