Calc has the ability to provide you with a virtual desktop on the Calc login node, complete with GUI and GPU acceleration.  This is accomplished with the use of Virtual Network Computing, or VNC, and VirtualGL on top of our NVIDIA GRID infrastructure.

Connecting to a VNC session in a secure manner is a non-trivial process, requiring the use of multiple programs and protocols simultaneously.  We've posted some detailed instructions on how to create and connect to VNC sessions on Calc.