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Subject: Re: [OMPI devel] barrier before calling del_procs
From: Nathan Hjelm (hjelmn_at_[hidden])
Date: 2014-07-21 13:01:16


I should add that it is an rte barrier and not an MPI barrier for
technical reasons.

-Nathan

On Mon, Jul 21, 2014 at 09:42:53AM -0700, Ralph Castain wrote:
> 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()?
>
>

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