[mpich-discuss] Do I need to run "mpd" every time before I execute "mpiexec"?

Jeff Hammond jeff.science at gmail.com
Wed Sep 4 23:14:03 CDT 2013


On Wed, Sep 4, 2013 at 11:02 PM, Nicolas Rosner <nrosner at gmail.com> wrote:

> Hi Seungbum,
> > do I need to run "mpd" every time before I run "mpiexec"?
> No.  You shouldn't need to run mpd at all.
> From the FAQ: "The mpd process manager has many problems, as well as
> an annoying mpdboot step that is fragile and difficult to use
> correctly. The mpd process manager is deprecated at this point ..."
> Perhaps when you typed "mpiexec", you were not really running the
> mpiexec binary that you had just built, but rather some other (really
> old) version that was already lying around on your system?
> I'd suggest:
>    running "which mpiexec" and "mpiexec --version"
>    checking your $PATH
>    specifying an absolute pathname to the new mpiexec binary instead
> of just "mpiexec"
> Hope this helps,
> Nicolás
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Jeff Hammond
jeff.science at gmail.com
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