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Subject: Re: [OMPI users] a question about mpirun
From: jody (jody.xha_at_[hidden])
Date: 2011-07-07 03:08:54


Hi

It seems that you have mixed an "old" LAM-MPI installation with OpenMPI.

To make sure your OpenMPI installation is ok you could try to use the
complete path to mpirun:
  /data1/cluster/openmpi/bin/mpirun -np 1 /tmp/openmpi-1.4.3/examples/ring_c

You should also make sure that the compile-command is the one of
OpenMPI and not of LAM MPI.
( /data1/cluster/openmpi/bin/mpiCC or something like that)

Check your PATH environment variable to make sure it doesn't contain
any of the LAM MPI directories,
and make sure you set the LD_LIBRARY_PATH variable correctly (see
http://www.open-mpi.org/faq/?category=running#run-prereqs)

Hope this helps
  Jody

On Thu, Jul 7, 2011 at 8:44 AM, zhuangchao <freeoser_at_[hidden]> wrote:
> hello all :
>
>        I  installed  the openmpi-1.4.3  on redhat as the following step :
>
>        1.  ./configure  --prefix=/data1/cluster/openmpi
>
>        2.  make
>
>        3.  make  install
>
>        And  I   compiled  the  examples  of  openmpi-1.4.3  as the following
> step :
>
>        1. make
>
>         Then  I   run   the example :
>
>             ./mpirun  -np 1  /tmp/openmpi-1.4.3/examples/ring_c
>
>         I  get  the following  error :
>
> -----------------------------------------------------------------------------
> It seems that there is no lamd running on the host node1.
> This indicates that the LAM/MPI runtime environment is not operating.
> The LAM/MPI runtime environment is necessary for MPI programs to run
> (the MPI program tired to invoke the "MPI_Init" function).
>
> Please run the "lamboot" command the start the LAM/MPI runtime
> environment.  See the LAM/MPI documentation for how to invoke
> "lamboot" across multiple machines.
> -----------------------------------------------------------------------------
>
>        I   run openmpi , but  I  get  the error from lam-mpi .  why ?
> Can  you  help me ?
>
>        Thank you !
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