[Wrf-users] WRF Problem running in Parallel on multiple nodes(cluster)

Bart Brashers bbrashers at Environcorp.com
Tue May 3 10:06:46 MDT 2011

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.




From: wrf-users-bounces at ucar.edu [mailto:wrf-users-bounces at ucar.edu] On
Behalf Of Ahsan Ali
Sent: Tuesday, May 03, 2011 1:04 AM
To: users at open-mpi.org
Subject: [Wrf-users] WRF Problem running in Parallel on multiple




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

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

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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