Hui,

$ mpiexec -N 10 -hostfile MySlurmNodeFile2 hostname

works properly, reporting from each of 10 nodes.

Kurt

From: Zhou, Hui <zhouh@anl.gov>
Sent: Monday, June 13, 2022 2:44 PM
To: discuss@mpich.org
Cc: Mccall, Kurt E. (MSFC-EV41) <kurt.e.mccall@nasa.gov>
Subject: [EXTERNAL] Re: mpiexec fails to launch any processes

Hi Kurt,

I don't have much clue. Are you able to launch some trivial applications, for example, "hostname"?

--

Hui

---

From: Mccall, Kurt E. (MSFC-EV41) via discuss <discuss@mpich.org>
Sent: Monday, June 13, 2022 12:29 PM
To: discuss@mpich.org <discuss@mpich.org>
Cc: Mccall, Kurt E. (MSFC-EV41) <kurt.e.mccall@nasa.gov>
Subject: Re: [mpich-discuss] mpiexec fails to launch any processes

Outlook blocked the output file slurm.out that I had attached.   Trying to send it again as slurm.txt.

Kurt

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