Time limit: `h_rt`

Format: hh:mm:ss (hour:minute:second), e.g. -l h_rt=4:00:00
It is not possible to alter the h_rt value for a running job.
The job is terminated unconditionally once the time limit specified by h_rt is reached.
One can modify the h_rt value for a pending job, e.g. job ID 54321, to 8 hours:
```
qalter -mods l_hard h_rt 8:00:00 54321
```
A regular job can run up to 24 hours (i.e. -l h_rt=24:00:00).
If your account has high-priority access, a job can run up to 14 days on the purchased nodes, e.g. -l h_rt=336:00:00,highp. (note: -l highp)

Note: Not everyone has high-priority access; check with your PI to see if your research group has purchased compute nodes.

Hoffman2 Cluster Advanced Topics documentation