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Subject: Re: [OMPI users] [Wrf-users] WRF Problem running in Parallel on multiple nodes(cluster)
From: Ralph Castain (rhc_at_[hidden])
Date: 2011-05-04 08:30:48


You still have to set the PATH and LD_LIBRARY_PATH on your remote nodes to include where you installed OMPI.

Alternatively, use the absolute path name to mpirun in your cmd - we'll pick up the path and propagate it.

On May 3, 2011, at 9:14 PM, Ahsan Ali wrote:

> Dear Bart,
>
> I think OpenMPI don't need to be installed on all machines because they are NFS shared with the master node. I don't know how to check output of which orted, it is running just on the master node. I have another application which is running similarly but I am having problem with WRF.
>
> On Tue, May 3, 2011 at 9:06 PM, Bart Brashers <bbrashers_at_[hidden]> wrote:
> It looks like OpenMPI is not installed on all your execution machines. You need to install at least the libs on all machines, or on an NFS-shared location. Check the output of "which orted" on the machine that works.
>
>
> Bart
>
>
> From: wrf-users-bounces_at_[hidden] [mailto:wrf-users-bounces_at_[hidden]] On Behalf Of Ahsan Ali
> Sent: Tuesday, May 03, 2011 1:04 AM
> To: users_at_[hidden]
> Subject: [Wrf-users] WRF Problem running in Parallel on multiple nodes(cluster)
>
>
> Hello,
>
>
> I am able to run WRFV3.2.1 using mpirun on multiple cores of single machine, but when I want to run it across multiple nodes in cluster using hostlist then I get error, The compute nodes are mounted with the master node during boot using NFS. I get following error. Please help.
>
>
> [root_at_pmd02 em_real]# mpirun -np 10 -hostfile /home/pmdtest/hostlist ./real.exe
>
> bash: orted: command not found
>
> bash: orted: command not found
>
> --------------------------------------------------------------------------
>
> A daemon (pid 22006) died unexpectedly with status 127 while attempting
>
> to launch so we are aborting.
>
>
> There may be more information reported by the environment (see above).
>
>
> This may be because the daemon was unable to find all the needed shared
>
> libraries on the remote node. You may set your LD_LIBRARY_PATH to have the
>
> location of the shared libraries on the remote nodes and this will
>
> automatically be forwarded to the remote nodes.
>
> --------------------------------------------------------------------------
>
> --------------------------------------------------------------------------
>
> mpirun noticed that the job aborted, but has no info as to the process
>
> that caused that situation.
>
> --------------------------------------------------------------------------
>
> mpirun: clean termination accomplished
>
>
>
> --
> Syed Ahsan Ali Bokhari
> Electronic Engineer (EE)
>
>
> Research & Development Division
> Pakistan Meteorological Department H-8/4, Islamabad.
> Phone # off +92518358714
>
> Cell # +923155145014
>
>
>
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>
>
>
>
> --
> Syed Ahsan Ali Bokhari
> Electronic Engineer (EE)
>
> Research & Development Division
> Pakistan Meteorological Department H-8/4, Islamabad.
> Phone # off +92518358714
> Cell # +923155145014
>
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