Pure MPI example

This example shows to run a pure MPI application.

The program prints some basic information about the workers. Then, it calculates an approximate value for pi.

How to build Image

For OpenMPI:

docker build -t mpi-pi .

For Intel MPI:

docker build -t mpi-pi . -f intel.Dockerfile

For MPICH:

docker build -t mpi-pi . -f mpich.Dockerfile

Modify pi.yaml (for OpenMPI), pi-intel.yaml (for Intel MPI) or pi-mpich.yaml (for MPICH) to set up the image name from your own registry.

Then, run:

kubectl create -f pi.yaml

The YAML shows how to run the binaries as a non-root user.