[mpich-discuss] MPI_Finalize hangs in dynamic connection in case of failed process

[Roy, Hirak]

Hi All,

I am using MPICH with sock connection.
I also setup processes using dynamic connection method (MPI_Comm_connect/MPI_Comm_accept). It's a master-slave architecture where master accepts the connections from slaves.

Now if one of the process dies (or get killed), I can still recover from this (without using checkpoint/restore method).
For the particular process in master, I do not call MPI_disconnect (it hangs and does not complete).
As a result, my MPI_Finalize in master hangs and does not complete.
Do you have a workaround to forcefully complete MPI_Finalize or MPI_disconnect?
I tried MPI_Comm_free on the failed connection. However, it does not solve the hang in finalize.

Thanks,
Hirak
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