VNC advantages over X-forwarding:
- much faster and stabler.
- very stable and established means of graphical remote control.
- consumes kB/sec instead of MB/sec.
- deliberately or accidentally disconnect, and when you reconnect, your VNC desktop is still there as it was.
1. Install VNC Viewer on your laptop
RealVNC Viewer is free and very nice to use and is also available for just about any operating system or device.
2. Start VNC server on supercomputer
Here are some example procedures: