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[multiple-prefixes]
The SLURM process starter for PRTE does not support multiple
different --prefix options to mpirun.  You can specify at most one
unique value for the --prefix option (in any of the application
contexts); it will be applied to all the application contexts of your
parallel job.

Put simply, you must have PRTE installed in the same location on
all of your SLURM nodes.

Multiple different --prefix options were specified to mpirun.  This is
a fatal error for the SLURM process starter in PRTE.

The first two prefix values supplied were:
    %s
and %s
#
[no-hosts-in-list]
The SLURM process starter for PRTE didn't find any hosts in
the map for this application. This can be caused by a lack of
an allocation, or by an error in the PRTE code. Please check
to ensure you have a SLURM allocation. If you do, then please pass
the error to the PRTE user's mailing list for assistance.
#
[no-local-slave-support]
A call was made to launch a local slave process, but no support
is available for doing so. Launching a local slave requires support
for either rsh or ssh on the backend nodes where MPI processes
are running.

Please consult with your system administrator about obtaining
such support.
[no-srun]
The SLURM process starter for OpenMPI was unable to locate a
usable "srun" command in its path. Please check your path
and try again.
#
[ancient-version]
The Slurm process starter requires a minimum Slurm version level
of v17.11. The detected version being used here is:

  Major: %d
  Minor: %d

SchedMD strongly recommends that you upgrade your Slurm version.
Versions of Slurm prior to 21.08.8 and 20.11.9 have been found
to have a security issue and are not supported - therefore, it
is recommended that you upgrade to a level at or above those
versions.

It is recognized that upgrades can take some time to complete.
In the interim, you can execute your job by ignoring the Slurm
process starter via the following MCA parameter:

  Environment: PRTE_MCA_plm=^slurm
  Cmd line: --prtemca plm ^slurm
  Default MCA param file: plm = ^slurm

This will result in use of the ssh process starter. This will have
no impact on your application, but will result in any accounting
being done solely at the allocation level instead of per-job.