[mpich-discuss] MPICH2 on AIX

[Eric Sun]

Hi Pavan,

I tried mpiexec.hydra.

Even "mpiexec.hydra -np 1 examples/cpi" doesn't work. The program just hangs
there with no output.

I tried "mpdcheck -v". It doesn't seem to give error info.

It could be a serious networking problem as you said. Because this is a
single SMP machine, there may be some networking stuff that was not set up
properly. Any suggestion on how to check the networking problem, so that I
can contact our admin. Thanks!

--
Eric

On Sun, Dec 13, 2009 at 1:24 PM, Pavan Balaji <balaji at mcs.anl.gov> wrote:

>
> On 12/13/2009 11:44 AM, Eric Sun wrote:
> > FYI, I needed to edit src/openpa/src/Makefile to change "AR = ar" to "AR
> > = ar -X64". So, the AR="ar -X64" didn't apply to this directory. Also,
> > somehow I need to edit the main Makefile to add full path for "INSTALL =
> > confdb/install-sh". Everything else is fine.
>
> What errors were you seeing without these changes? This should work out
> of the box, AFAICT.
>
> > I'm now doing a first test using "mpiexec -l -n 4 hostname". For n=1, it
> > always works. n=2 occasionally fails. n=3 occasionally successes. n=4
> > always gives the following message:
> > mpiexec_pls01.ccni.rpi.edu <http://mpiexec_pls01.ccni.rpi.edu> (mpiexec
> > 392): no msg recvd from mpd when expecting ack of request
>
> This usually points to some problem with the networking setup. Can you
> use the mpdcheck utility to see if it can find any? Do you have any
> firewall for some of the ports?
>
> Alternatively, you can try using the Hydra process manager
> (mpiexec.hydra instead of mpiexec). Here's some documentation:
> http://wiki.mcs.anl.gov/mpich2/index.php/Using_the_Hydra_Process_Manager
>
> If there's a serious networking setup problem, both mpd and Hydra will
> give you errors, of course. So, you'll need to make sure your setup is
> fine in either case.
>
>  -- Pavan
>
> --
> Pavan Balaji
> http://www.mcs.anl.gov/~balaji
> _______________________________________________
> mpich-discuss mailing list
> mpich-discuss at mcs.anl.gov
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>



-- 
Yiyang Sun
Department of Physics, Applied Physics, and Astronomy
Rensselaer Polytechnic Institute
Troy, NY 12180, USA
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