v4.1.x: --do-not-launch throws misleading error #10643
Description
Background information
What version of Open MPI are you using? (e.g., v3.0.5, v4.0.2, git branch name and hash, etc.)
Open MPI v4.1.x branch
Describe how Open MPI was installed (e.g., from a source/distribution tarball, from a git clone, from an operating system distribution package, etc.)
git clone -b v4.1.x [email protected]:open-mpi/ompi.git at commit 88bb627
Please describe the system on which you are running
- Operating system/version: RHEL 8.4
- Computer hardware: ppc64le
- Network type: Ethernet
Details of the problem
shell$ mpirun --host f5n17:2 --do-not-launch hostname
Data for JOB [17227,1] offset 0 Total slots allocated 2
======================== JOB MAP ========================
Data for node: f5n17 Num slots: 2 Max slots: 0 Num procs: 2
Process OMPI jobid: [17227,1] App: 0 Process rank: 0 Bound: N/A
Process OMPI jobid: [17227,1] App: 0 Process rank: 1 Bound: N/A
=============================================================
[f5n18:3126629] LAUNCH MSG RAW SIZE: 783
--------------------------------------------------------------------------
An internal error has occurred in ORTE:
[[17227,0],0] FORCE-TERMINATE AT (null):0 - error base/plm_base_launch_support.c(595)
This is something that should be reported to the developers.
--------------------------------------------------------------------------The "An internal error has occurred in ORTE" is incorrect since ORTE is just terminating without launching - which is what the user asked for.
We need to suppress the error message in this case.