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Subject: Re: [OMPI users] A simple mpi code hangs at MPI_Init?
From: Aurélien Bouteiller (bouteill_at_[hidden])
Date: 2008-05-07 16:56:18


There is no mpd in Open MPI. mpirun will spawn everything needed for
you. Make sure all your processes call MPI_Init, and not only the root
process. If you mpirun -np 10, 10 processes need to go trough MPI_Init
to allow for further progression.

If this does not solve you problem, please give the Open MPI version
(ompi_info gives it) and check your installation does not collide with
another installation of MPICH or LAM.

Le 7 mai 08 à 15:47, Sang Chul Choi a écrit :

> Hi,
> I tried to run a hello world example of mpi code. It just hangs at
> MPI_Init. My machine is installed with Ubuntu linux and I install some
> package of open mpi. Compiling was okay, but running the code hangs at
> MPI_Init. Is there any specific things that I should do before running
> mpi code such as "mpd" setup?
> I will appreciate any help.
> Thank you,
> Sang Chul
> --
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> Sang Chul is at Piscataway.
> Work: +1-732-445-2681
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