We already have an rte barrier before del procs
Sent from my iPhone > On Jul 21, 2014, at 8:21 AM, Yossi Etigin <yos...@mellanox.com> wrote: > > 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()? >
