Why won't my job start?

Article ID: 380
Last updated: 04 Dec, 2025

A job might not start for one of the following reasons:

  • The queue has reached its maximum run limit
  • Your job is waiting for resources
  • Your mission share has run out
  • The system is going into dedicated time
  • Scheduling is turned off
  • Your job has been placed on hold
  • Your home filesystem or default /nobackup filesystem is down
  • Your hard quota limit for disk space has been exceeded

You can often determine the reason a job does not start by running one of the following commands to view job status and information:

  • To view job status and events that might specify the reason a job served by pbspl1 or pbspl4 failed to start, run tracejob job_id on the PBS server pbspl1 or pbspl4

    Note: Users have no access to pbs05a which serves jobs submitted to run on Cabeus gh200 nodes.

  • To view all available information about the job, including status or any comments added by the administrator or scheduler that may explain why the job didn't start, run qstat -as job_id on an appropriate front-end system for the compute resources requested by your job.
  • To find out whether the system is in dedicated time, run schedule all.

See Common Reasons Why Jobs Won't Start for more detailed troubleshooting information.

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