Hello,

Referring to the following bug

https://svn.open-mpi.org/trac/ompi/ticket/2681

that MPI_Publish_name was hanging, in fact, any call that contacted the ompi-server was hanging. By looking at all communication between the application and ompi-server, it seemed that the ompi-server was getting the wrong/bad route to reach the application in order to send back the answer of publish/lookup/unpublish.

In orte/mca/routed/binomial/routed_binomial.c, I found the following loc in the get_route() function,

    if (ORTE_PROC_IS_TOOL) {
        ret = target;
        goto found;
    }


which, I believe, returned the target directly as the route to any tool. Comparing with 1.4.3, I could not understand the change that brought in the above case. So I simply commented it out and ompi-server worked perfect with all the calls doing their job.
What I do not know if this affects any other tool.
Hope this is useful.

Best,
Suraj Prabhakaran