[slurm-users] Slurm doesn't call mpiexec or mpirun when run through a GUI app

[Thomas M. Payerle]

Assuming the GUI produced script is as you indicated (I am not sure where
you got the script you showed, but if it is not the actual script used by a
job it might be worthwhile to examine the Command= file from scontrol show
job to verify), then the only thing that should be different from a GUI
submission and a manual submission is the submission environment.  Does the
manual submission work if you add --export=NONE to the sbatch command to
prevent the exporting of environment variables?  And maybe add a printenv
to the script to see what environment is in both cases.  Though I confess I
am unable to think of any reasonable environmental setting that might cause
the observed symptoms.

On Fri, Mar 22, 2019 at 11:23 AM Prentice Bisbal <pbisbal at pppl.gov> wrote:

> On 3/21/19 6:56 PM, Reuti wrote:
> > Am 21.03.2019 um 23:43 schrieb Prentice Bisbal:
> >
> >> Slurm-users,
> >>
> >> My users here have developed a GUI application which serves as a GUI
> interface to various physics codes they use. From this GUI, they can submit
> jobs to Slurm. On Tuesday, we upgraded Slurm from 18.08.5-2 to
> 18.08.6-2,and a user has reported a problem when submitting Slurm jobs
> through this GUI app that do not occur when the same sbatch script is
> submitted from sbatch on the command-line.
> >>
> >> […]
> >> When I replaced the mpirun command with an equivalent srun command,
> everything works as desired, so the user can get back to work and be
> productive.
> >>
> >> While srun is a suitable workaround, and is arguably the correct way to
> run an MPI job, I'd like to understand what is going on here. Any idea what
> is going wrong, or additional steps I can take to get more debug
> information?
> > Was an alias to `mpirun` introduced? It may cover the real application
> and even the `which mpirun` will return the correct value, but never be
> executed.
> >
> > $ type mpirun
> > $ alias mpirun
> >
> > may tell in the jobscript.
> >
> Unfortunately, the script is in tcsh, so the 'type' command doesn't work
> since,  it's a bash built-in function. I did use the 'alias' command to
> see all the defined aliases, and mpirun and mpiexec are not aliased. Any
> other ideas?
>
> Prentice
>
>
>
>
>

-- 
Tom Payerle
DIT-ACIGS/Mid-Atlantic Crossroads        payerle at umd.edu
5825 University Research Park               (301) 405-6135
University of Maryland
College Park, MD 20740-3831
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