#!/bin/bash


# compile
DIRhosts=/home/ubuntu/mpitmp/hosts
DIR=/home/ubuntu/mpitmp

mkdir -p $DIR
mpicc -o $DIR/mpi_hello_world ./mpi_hello_world.c

# scp hello wrold to all clients. sudo -u mpi for auto scp connect. see /home/mpi/.ssh 
swarmlab-getworkers > $DIRhosts
while read -r line; 
 do 
    scp $DIR/mpi_hello_world ubuntu@$line:$DIR/mpi_hello_world
done < $DIRhosts


# run it! 
 mpirun -n 10 -f $DIRhosts  $DIR/mpi_hello_world  2>&1 | tee /tmp/output.log