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== Jupyter == <!--T:22--> | == Jupyter == <!--T:22--> | ||
Please see [[Jupyter]]. | Please see [[Jupyter]]. | ||
== Troubleshooting == | |||
=== Python script is hanging === | |||
By using the [https://docs.python.org/3.8/library/faulthandler.html faulthandler] module, you can edit your script to allow dumping a traceback after a timeout. See <code>faulthandler.dump_traceback_later()</code>. | |||
You can also inspect a python process while the job is running, without modifying it beforehand, using [https://pythonrepo.com/repo/benfred-py-spy-python-debugging-tools py-spy]: | |||
# Install py-spy in a virtualenv in your home | |||
# Attach to the running job, using <code>srun --pty --jobid JOBID bash</code> | |||
# Use <code>htop -u $USER</code> to find the process ID of your python script | |||
# Activate the virtualenv where py-spy is installed | |||
# Run <code>py-spy top --pid PID</code> to see live feedback about where your code is spending time | |||
# Run <code>py-spy dump --pid PID</code> to get a traceback of where your code is currently at. | |||
</translate> | </translate> | ||