\c MSG_comm_test() to know if the communication is complete and evenetually destroy it with a call to
\c MSG_comm_destroy(). It is also possible to call \c MSG_comm_wait() which provides a shortcut.
\c MSG_comm_test() to know if the communication is complete and evenetually destroy it with a call to
\c MSG_comm_destroy(). It is also possible to call \c MSG_comm_wait() which provides a shortcut.