[OMPI devel] barrier before calling del_procs

[Yossi Etigin]

Hi,

We get occasional hangs with MTL/MXM during finalize, because a global 
synchronization is needed before calling del_procs.
e.g rank A may call del_procs() and disconnect from rank B, while rank B is 
still working.
What do you think about adding an MPI barrier on COMM_WORLD before calling 
del_procs()?