Run on Image

Running directly on the image without launching instances is not recommended!

WARNING: If you were to do something like this from within a container you would also see the service start, and the web server running. But then if you were to exit the container, the process would continue to run within an unreachable mount namespace. The process would still be running, but you couldn’t easily kill or interface with it. This is a called an orphan process. Singularity instances give you the ability to handle services properly. More on this here.

However, for whatever reason, if you would want to directly run things in the container:

singularity shell --nv tf2.sif
singularity exec --nv tf2.sif python
singularity exec --nv tf2.sif command_to_execute

To run jupyter notebook the old-school way (without the app):

singularity exec --bind /home/username/.jupyter/tmp:/run/user \
                 --bind /home/username/project_folder:/jupyter \
                 --nv \
                 tf2_jupyter.sif \
                 jupyter notebook --notebook-dir=/jupyter --no-browser

Note

• When starting services without instances (i.e, when working directly on the singularity image), remember to bind --nv and other directories via --bind every single time. Not applicable when running on launched instances.