Ansys/Workbench

Running Ansys/Workbench interactivly with GUI on a visual node

1. Open remote connection to the visual node

Detailed discussion about visualization nodes can be found here.

a. Connect to DelftBlue and start a "desktop" job:

$ module load 2022r2
$ module load desktop
$ vnc_desktop 2h -- --cpus-per-task=8 --mem=16G --account=research-faculty-department

As a result, you should get a message along these lines:

Reserving a GPU node (partition "visual")

SLURM job ID is 912918
Waiting for job to start running on a node
We got assigned node visual01, waiting for output...
Waiting until VNC server is ready for connection...

VNC server visual01:1 ready for use!

Check which "port number" the system allocated to you, here "visual01:1", i.e. port "1".

b. Open a tunnel to the port above

Open a separate terminal window and open a tunnel to the corresponding port:

ssh -L 5901:visual01:5901 <netid>@login.delftblue.tudelft.nl

c. Connect your VNC client to the local port corresponding to the open tunnel

vncviewer localhost:1

or graphically:

You should be now prompted with your VNC password (not your NetID password!):

Finally, we have our remote desktop up and running:

2. Load necessary modules and run Workbench GUI

Inside of the remote desktop, open a terminal and type the following:

module load 2022r2
module load visual
module load qt
module load openmpi
module load ansys
module load virtualgl
vglrun runwb2

You should be greeted with the Workbench splashscreen:

and eventually see the following:

You are good to go now.