Cancelling jobs

c on a job row (from the main table or the detail screen) opens a confirmation modal:

scancel confirmation modal

  • y runs scancel <jobid> on the cluster.

  • n / Esc aborts without touching SSH.

Warning

scancel is irreversible — Slurm terminates the job, releases its allocation, and frees the GPUs / memory immediately. There is no “undo”. Take a second to read the job name in the modal before pressing y.

Why a confirmation modal

The selected SlurmJob is captured at the moment you press c. Even if the cursor moves before you confirm, only the originally selected job is cancelled. This avoids the classic “I scrolled while the modal was open and cancelled the wrong job” bug.

Already-terminal jobs

Jobs already in COMPLETED, FAILED, CANCELLED, or TIMEOUT state short-circuit with a warning — no SSH round trip happens.

What it doesn’t do

slurmhub runs Slurm’s standard scancel command — it does not call scancel --signal=KILL, scancel --batch, or any of the more aggressive forms. If you need those, use the shell. The TUI is intentionally conservative here.