mpirun and mpiexec

[Pete Wyckoff]

david at bioinfo.cu said on Mon, 14 Jul 2003 09:08 -0400:
> I installed mpiexec in my oscar cluster with the following options:
> 
> --with-pbs=/opt/pbs and -with-default-comm=mpich-p4.
> 
> I have the following script(my_script):
> #!/bin/bash
> #PBS -N caca4
> #PBS -o outputfile
> #PBS -e errorfile
> #PBS -l nodes=2:ppn=2
> #PBS -m abe
> #PBS -M david at bioinfo.cu
> #PBS -q workq
> /opt/mpich-1.2.4/bin/mpicc -o 
> /home/oscartst/pbs/DIRECTORY/david at bioinfo.cu/cpi.c/cpi.c.cc
> /home/oscartst/pbs/DIRECTORY/david at bioinfo.cu/cpi.c/cpi.c
> /usr/local/bin/mpiexec
> /home/oscartst/pbs/DIRECTORY/david at bioinfo.cu/cpi.c/cpi.c.cc
> 
> but i am getting the following error when i do: qsub my_script
> 
> /var/spool/pbs/mom_priv/jobs/160.oscarno.SC: /usr/local/bin/mpiexec: No
> such file or directory

Does the executable exist on the compute node?  You need mpiexec
on every one of the compute nodes.

> 2-If i do mpiexec my_compiledjob.c igot the following error:
> mpiexec: Error: PBS_JOBID not set in environment.  Code must be run from a
>   PBS script, perhaps interactively using "qsub -I".

That's true.  Only run mpiexec within a batch or interactive PBS job.

		-- Pete