Using from derecho CPU node

[trontrytel]

We tried running it from derecho. We were able to briefly run the visualization from the login node. But then were kicked out (rightfully so). We were not able to start the visualization from a cpu node

[trontrytel]

Thank you for showing me!

[AlexisRenchon]

@trontrytel I found the solution.
ssh to derecho as usual
ssh derecho
then get an interactive cpu:
qinteractive --ntasks 2
this will do something like:
arenchon@dec2435
the key is dec2435, you can also get it once you're on cpu with hostname
then open a new terminal and ssh to it with port forwarding:
ssh -L 8080:dec2435:8080 derecho

then start the app (from the cpu node)
I will modify the docs to make it clear.
It's a PBS / Derecho thing. There is less steps on SLURM / clima.