[mpich-discuss] mpiexec fails to launch any processes

Hi, My mpiexec command fails to launch any processes. I ran it with the -verbose option but didn't see any obvious errors in the output (attached). The command is: mpiexec -launcher ssh -verbose -print-all-exitcodes -wdir <directory> -np 20 -ppn 1 <more args...> I am running MPICH 4.0.1 under Slurm 20.11.8. Thanks for any help. Kurt