https://pbspro.atlassian.net/browse/PP-864
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- 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
- On Cray X* series system PBS issues a request to ALPS to switch IN (resume) or OUT (suspend) an ALPS reservation
- On a Cray X* series, the suspended low priority job and the high priority job must fit into the Cray compute node’s memory
- On a Cray X* series systems have a limitation of having at maximum of 4 co-resident jobs on a compute node. Please read Cray documentation for more details.
Interface #1 - New error code when ALPS fails to switch reservation from suspend to resume or resume to suspend
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- Change Control: Stable
- Details:
- On a Cray X* series system a job that requests exclusive access (i.e. -lplace=excl) to a node can not be suspended. An error is thrown by ALPS while trying to switch out an exclusive job's ALPS reservation
- If it is tried to be suspended mom returns with an error code 15219 and logs an DEBUG level error message as mentioned in 5th bullet of Interface 25
Interface #5 - New mom log messages
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