1. Kill all torque jobs.
2. Backup the torque configuration:
   qmgr -c "p s" > /root/qmgr.backup 
3. Disable torque:
   wlm-setup -w torque -d
4. Update torque and openmpi on head node and in software images:
   yum update torque torque-client openmpi*
   yum update torque-client openmpi* --installroot=/cm/images/<software image name> 
5. Propagate software image(s) to compute nodes.
6. Load new module:
   module unload torque
   module load torque
7. Setup default torque configuration:
   wlm-setup -w torque -s 
8. Check managers
   Move the line for the first server manager (set server managers = root@...) to the beginning of qmgr.backup text file. Any other server managers should also be moved and appended (set server managers += user@...) as lines immediately after the first line.
   
9. Restore old torque configuration:
   cat /root/qmgr.backup | qmgr -e