Common Errors Using X11 Workspace

Port Forward Session Closed

If you close the terminal where the port-forward command was running, your connection might disconnect.

Solution:

Keep the terminal running the port-forward session open while the port forward is running. If the session was closed, open a new one and re-do the steps from the submission command - Running Stata X11 Workspaces or Running SUMO X11 Workspaces.

Wrong Command To Open A Session

Once the port forward is running, you must run the correct command to start the graphical session.

For example, for Stata run:

$ xstata-mp

Or for SUMO run:

$ sumo-gui

Sometimes users mistype these commands, which prevents the session from opening.

Solution:

Double-check that you use the correct command exactly as shown above.

SSH Key Not Set Up Properly

If your SSH key is not configured correctly, the port-forward will fail with an authentication error, such as:

Error: Failed to start port-forward for sumo-v2 on port 30058:
Error: port-forward command failed. authentication error: failed loading userinfo: 401 Unauthorized:

Solution:

Follow the steps in Setting Up SSH Keys for HPC Cluster Access to set up your SSH key properly.