Required libraries for Ubuntu 16.04.
sudo apt-get install libopenmpi-dev
sudo apt install openmpi-bin
Install MPI4py and any other dependency
pip install -r requirements
Install this on each decive in your cluster.
Execute the script with mpiexec.
mpiexec -n 2 --host ip-or-hostname-1,ip-or-hostname-2 python script-name.py
# Example
# mpiexec -n 2 --host 192.168.0.9,192.168.0.7 python first.py