Using mpiexec on non-PBS node for short test?

[David Gunter]

We have mvapich2 running on an IB cluster here, under PBS control.   
We build the standard mvapich2 including the mpich2 mpirun and  
mpiexecs but at the tail end of that we delete mpiexec and mpirun in  
favor of the PBS-enabled mpiexec.

Now we have run into a problem.  We have a user who has a complicated  
build setup and needs to run a short "mpirun -n 1" test job as part  
of his compilation process.  This breaks since mpiexec doesn't seem  
to allow this sort of mode:

$ mpirun -n 1 my.exec
mpirun: Error: PBS_JOBID not set in environment.  Code must be run  
from a
   PBS script, perhaps interactively using "qsub -I".

Are there any flags that can be passed to mpiexec to allow it to do a  
simple shmem type of start up on a generic node?

Thanks,
david
--
David Gunter
HPC-4: HPC Environments: Parallel Tools Team
Los Alamos National Laboratory


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