How to quickly create a test kernel#
This is a follow up on Kernels. In
some cases, the process of publishing new Python modules can take long.
In the meantime, you can create a test kernel
to use it in
Jupyterhub. In
this example, we are not going to create a new conda env but only the
kernel configuration files.
Note
in this tutorial, I will take the module python3/2021-01. as an example.
Create a kernel configuration file#
log in to Levante
module load python3
python -m ipykernel install --user --name python3-2021-01 --display-name="python3/2021-01"
Now, a kernelspec is created (as printed in the terminal) in `Installed kernelspec python3-2021-01 in /path/to/.local/share/jupyter/kernels/python3-2021-01
Create a bash script#
We need a bash script to load the test module
:
touch start-kernel.sh
chmod +x start-kernel.sh
put the following lines in the start-kernel.sh
#!/bin/bash
module purge
module load python3/2021.01-gcc-9.1.0
python -m ipykernel_launcher -f "$1"
Modify kernel.json#
Finally, you need to change the link to start-kernel.sh
in the
kernel specification file created in the first step. It should look like
this:
{
"argv": [
"/path/to/start-kernel.sh",
"{connection_file}"
],
"display_name": "python3/2021-01",
"language": "python"
}
Start a Jupyter Notebook/lab and the new kernel should be available.