To run_model.py in the background:
Running scripts in the python background. Outputs here are saved to an nohup.out nohup python3 run_model.py &
You can find the process and it's Process ID (PID): ps ax | grep run_model.py
or list running processes in python
ps -fA | grep python
If you want to stop the execution, you can kill with this command.
kill PID