#!/bin/bash

# compile
mpicc -o /project/mpi_hello_world ../examples/mpi_hello_world.c

# scp hello wrold to all clients. sudo -u mpi for auto scp connect. see /home/mpi/.ssh 
while read -r line; 
 do 
   sudo -u mpi scp /project/mpi_hello_world mpi@$line:/project/mpi_hello_world
done < /project/hosts

# cd to work dir
cd /project

# run it! 
sudo -u mpi mpirun -n 10 -f /project/hosts  /project/mpi_hello_world  2>&1 | tee /tmp/output.log