First, edit the local.rt file with your hostname.
Start the receiver and the tester. Be sure to set LD_LIBRARY_PATH or your system equivelent to point to where the RMR .so files are. On my system (Arch Linux) they are as below. Also, set -x is fish shell notation, substitute for your shell.
set -x LD_LIBRARY_PATH /usr/local/lib/; set -x RMR_SEED_RT ./local.rt; python receive.py set -x LD_LIBRARY_PATH /usr/local/lib/; set -x RMR_SEED_RT ./local.rt; python send.py