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Subject: Re: [OMPI devel] barrier before calling del_procs
From: Ralph Castain (rhc.openmpi_at_[hidden])
Date: 2014-07-21 12:42:53


We already have an rte barrier before del procs

Sent from my iPhone

> On Jul 21, 2014, at 8:21 AM, Yossi Etigin <yosefe_at_[hidden]> 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()?
>