Several accounts, several machines

• Quota is per account. A session is charged to the account that starts it, not to the notebook’s owner (measured).
• Switching is a question, not a wall. If the active account can’t finish the session you asked for, kdev up shows every account’s remaining hours and lets you pick. kdev account use <name> switches by hand.
• The box is still running? kdev up from any account or machine connects to it instead of starting a second one.
• A new laptop. kdev setup signs you in and joins the workspace. The tunnel and git settings come from the notebook, and the new laptop’s SSH key is saved in the workspace (.kdev/authorized_keys). So every machine that has used it can reach every later box.
• Stopping a box someone else started. Kaggle only lets the account that started a session cancel it. When the box doesn’t answer, kdev down finds out which account that was and cancels as it — or tells you which account has to.

kdev account add alice    # sign an account in (browser); re-run to refresh it
kdev account              # every account and its GPU/TPU hours left
kdev account use alice    # it runs the next box