#! ./tesh

$ $SG_TEST_EXENV ./s4u_basic
> [host0:worker:(0) 0.000000] [s4u_test/INFO] Hello s4u, I'm ready to serve
> [host1:master:(0) 0.000000] [s4u_test/INFO] Hello s4u, I have something to send
> [host0:worker:(0) 0.001301] [s4u_test/INFO] I received 'GaBuZoMeu'
> [host0:worker:(0) 0.001301] [s4u_test/INFO] I'm done. See you.
> [host1:master:(0) 0.001301] [s4u_test/INFO] I'm done. See you.