https://pbspro.atlassian.net/browse/PP-864

Overview:

Cray X* series systems have the ability to support suspending one or more jobs to run a higher priority job.  PBS needs to modify the suspend pseudo signal (used by the qsig command and preemption) to support doing suspend and resume on a Cray X* series.

Important things to note: 

• Cray systems with a Gemini interconnect do NOT support suspend/resume
• Cray systems with an Aries interconnect and newer Cray X* series systems DO support suspend/resume 
• in order to do suspend/resume set suspendResume 1 in /etc/opt/cray/alps/alps.conf (using xtopview on CLE 5.2 and prior CLEs) and then restart ALPS
  • Please refer to Cray's System Administration Guide for more details about using suspend/resume on Cray X* series