Hi, guys.

My example code is the attachment.

1. What is the naming convention of service_name ?

      The hydra_nameserver CAN'T accept those strings whose length is less than 7.

      What's the exact naming convention?

2. The length of port_name by MPI_Loopup_name is different with MPI_Publish_name!

    You can test my code.

With best regards.

Haozi