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

Seungbum Koo doougsini at gmail.com
Thu Sep 5 06:59:12 CDT 2013

Wow. Thank you for the fast replies. You guys hardly sleep.

PROBLEM SOLVED. It works now.

Nicolás/ No. that can't be. It is my personal computer and I haven't
installed MPICH so far.
Jeff/ I saw that FAQ but didn't try --with-pm=hydra.

I first didn't configure MPICH with any process manager since hydra is set
to default according to the installation guide. I reconfigured
"--with-pm=hydra" and reinstalled. Now it is working.

Once again, thank you for your interest and help.


On Wed, Sep 4, 2013 at 11:14 PM, Jeff Hammond <jeff.science at gmail.com>wrote:

> http://wiki.mpich.org/mpich/index.php/Frequently_Asked_Questions#Q:_I_don.27t_like_.3CWHATEVER.3E_about_mpd.2C_or_I.27m_having_a_problem_with_mpdboot.2C_can_you_fix_it.3F
> 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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