Lifecycle
From a row's overflow menu or from the detail page header:
| Action | Effect |
|---|---|
| Open | Launch the notebook UI in a new browser tab. |
| Stop | Release compute. Storage stays. Start reattaches the same volumes. |
| Start | Boot a stopped session back up. |
| Edit | Change CPU/memory/env. Some fields require a stop-then-start cycle. |
| Delete | Tear down compute and volumes. Irreversible — confirm twice. |
The detail page
Click any row name to open it. The detail page is split into:
- Header — name, status, the live
OpenURL, and lifecycle actions. - Cost line — $/hr, accumulated, GPU utilization. The orange "idle" badge appears when GPU util has stayed under 5% for over an hour.
- Spec — image, compute profile, CPU/mem/GPU, mounts, configurations, env.
- Activity — chronological log of phase transitions, conditions, and reconcile errors.
- Observability — embedded Grafana panel scoped to this session.
warning
Idle sessions cost money. A 4×A100 session left open overnight is roughly $400. Workbench will surface an "idle" warning, but it's on you to stop sessions you're not actively using.