[feature request] Shutdown all running kernels in one click

[stas00]

jupyter notebook's /tree#running tab allows selective shutdown of running kernels.

Would it be possible to add [Shutdown All] button?

• I find that when restarting my browser with many opened tabs, it starts kernels in each of them. Even if I configure the browser not to reload on restart, switching to any tab will auto-start kernel. So I often end up clicking multiple times to shut them all, which is wasteful.

• And there are times when I just have several gpu-consuming notebooks running intentionally and I want to clear my gpu quickly

A single button to rule them all would have been great. From the menu and/or from the /tree#running tab.

And I know I can restart jupyter to shut them all down at once, except it won't be the same, because:

• chrome has to be restarted or otherwise nbs wouldn't work for 5 min
• and also each nb tab gets a pop-up that the server has gone away
  so it's not good solution.

Thank you!

[owlas]

I was going to post something similar, I think it fits here. One UX that gets me each time:

• Open a few notebooks in a directory
• Select all files (from the checkbox in top left)
• "Shutdown" option doesn't appear
• Deselect all files, select only active notebooks
• "Shutdown" appears

It feels quite natural to me to select everything and shutdown whatever is running (like in an idempotent way). Was this by design? What's the reason?

[johnsamuelwrites]

Adding screenshot to explain this problem:

Header

Option to individually shutdown each kernel

It will be interesting to have a button to shutdown all the kernels in a click

[jtpio]

For reference this feature is available in Notebook 7, which is currently in rc.

You can install it with: pip install --pre notebook.

notebook-7-shutdown-all.mp4

Closing as fixed, feel free re-open if you want to discuss this more. Thanks!