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The maximum run time for interactive jobs on all clusters is 12 hours.

Batch jobs

[fixme]Batch jobs (submitted with qsub) have the the following run time limits.

  • The “soft” run time limit (-l s_rt) is seven days. If a job reaches this limit, it is sent a SIGUSR1 signal.

  • The “hard” run time limit (-l h_rt) is eight days. If a job reaches this limit, it is killed with signal SIGKILL.

The idea of s_rt is to warn jobs that the hard limit is coming. It is up to the job to correctly interpret SIGUSR1 as “Tidy up as you will be killed soon”. In reality, most software, including shells, exit when they are sent a SIGUSR1.