Jupyter fails to launch

The most common reason for this is you have exceeded your home directory quota. When this happens, Jupyter cannot start because it cannot create the necessary files it needs.

The solution is to log in to your account through SSH, then move or remove the large files that are taking up the space. For large data files, you can move them to ~/large-data or ~/archive, which have much bigger quota. If you cannot log in throug SSH, please contact support.

If Jupyter does not work even though your home directory quota has not been exceeded, you can try resetting Jupyter by running the jupyter-reset command through SSH.

Remote Desktop fails to launch

If remote desktop fails to launch, one of the following errors could appear:

  • A dialog box titled Connection log with the message ...login failed for display 0: This means either the username or the password you entered is incorrect.
  • Blank screen or the remote desktop client terminates on its own: There is a corrupted remote desktop session. Using a terminal on Jupyter or SSH, reset remote desktop with the command xrdp-reset.

My application running on a login node keeps crashing

There is a limit of 5GB of RAM per user on the login nodes, so if your application involves working on a large amount of data, it could crash due to running into memory limit. For such resource-intensive work, please use Jupyter (Slurm) instead, which allows you to specify how much memory you need.

I am a student and I cannot log in

Accounts are automatically created for all students of the CUHK Department of Economics, as well as for students from other departments or universities enrolled in specific courses offered by the Department. Since enrollment constantly changes over the add/drop period, there is a chance that some students in the latter category are missing from our system. Please contact support for assistance.

For students of the Department, your username is your compute ID (s1155XXXXXX), and your password on SCRP is different from the one on OnePass. You can reset your password here.