There should have been an error message right above that - all this is saying is that the same error message was output by 7 more processes besides the one that was output. It then indicates that process 3 (which has pid 0?) was killed.
Looking at the help message tag, it looks like no NICs were found on the host. You might want to post the full error output. > On Jan 25, 2021, at 10:25 AM, Paul Cizmas via users > <users@lists.open-mpi.org> wrote: > > Hello: > > I am testing a rather large code on several computers. It works fine on all > except for a Linux Pop!_OS machine. I tried both OpenMPI 2.1.1 and 4.0.5. I > fear there is an issue because of the Pop!_OS but before I contact System76 I > would like to explore things further. > > I get the following message while running the code on a box called jp1: > > [jp1:3331418] 7 more processes have sent help message help-mpi-btl-base.txt / > btl:no-nics > [jp1:3331418] Set MCA parameter "orte_base_help_aggregate" to 0 to see all > help / error messages > > and then > > mpirun noticed that process rank 3 with PID 0 on node jp1 exited on signal 9 > (Killed). > > It seems I should set this MCA parameter "orte_base_help_aggregate" to 0 in > order to see the error messages. > > How can I do this? I suppose I should do it before running the code. Is > this correct? > > Thank you, > Paul