Hello,

This is basically a repost of my previous mail regarding problems with connect/accept and disconnect (*this is not related to spawning, parent/child*).
I *sometimes* find processes blocking indefinitely at Connect/Accept calls or at Disconnect calls. I have an example below.

Process A
{
    MPI_Open_port(...);
    MPI_Publish_name(...);
    MPI_Comm_accept(... &b_comm);  // -----> (1)
    // Do something1
    MPI_Comm_disconnect(&b_comm);  // ------> (2)
    // Do something2

}

Process B
{
    MPI_Lookup_name(...);
    MPI_Comm_connect(... &a_comm); // -----> (1)
    // Do something1
    MPI_Comm_disconnect(&a_comm); // ------> (2)
    // Do something2
}

In the above scenario, in a perfect case where A reaches (1) without any problems, *sometimes* B blocks at its (1) indefinitely. All arguments passed to both the functions are perfect.
Again, *sometimes* one of them block infinitely at (2) while the other goes on to do the something2. This could only be a problem at the application level only if the one that blocks indefinitely is always the same but it is not so. Sometimes A blocks and B is busy doing something2 or A is busy doing its something2 while B blocks.

Is this a known issue? or am I the only person experiencing this and is clean for others who frequently use connect/accept/disconnect calls?

Thanks,
Suraj