References:

• https://mpi4py.readthedocs.io/en/stable/install.html

Requirements:

You need to have the following software properly installed in order to build MPI for Python:

• A working MPI implementation, preferably supporting MPI-3 and built with shared/dynamic libraries. If you don't have an MPI implementation installed, for Linux you can install openMPI (an open source MPI implementation) using APT:

  sudo apt install openmpi-bin openmpi-common libopenmpi-dev
  

• Python 2.7, 3.5 or above.

Installation with pip:

python -m pip install mpi4py

or

python3 -m pip install mpi4py

Testing Installation:

Run the following command in your terminal:

mpirun -n 4 python -m mpi4py.bench helloworld

or

mpirun -n 4 python3 -m mpi4py.bench helloworld

The output should look like this (except for the username at the end):