Applications with graphical interface on Triton

One has two options: the recommended one is use, though alternatively, one can run a job.


Using Open OnDemand (OOD) is essential and easy, login to There on you will have several options, if the application you want to run is part of the Interactve Apps menu, then proceed from there. For instance Matlab, Paraview, R studio are there. In other case, launch a Triton Desktop and you recieve a normal Linux GUI environment of your choice (GNOME or alike).

It will be like you run a Linux Desktop on one of the Triton’s compute node with native access to /scratch and module .... Start a terminal within the session and proceed.

OOD is the recommended way.

Running a job

Not recommended, but still an option.


Before submitting a job: Optimally, through tests, have a rough idea, how long your job takes, how much memory it needs and how much CPU(s)/GPU(s) it needs.

Required Reading:

Required Setup:

First off, in general, using graphical user interfaces to programming languages (e.g. graphical Matlab, or RStudio) is not recommended, since there is no real advantage to submitting a job to the cluster.

However, there are instances where you might need large amount of resources e.g. to visualize data which is indeed intended use. There are two things you need to do to run a graphical program on the cluster:

  • Start X-forwarding (when login to Triton, use ssh -XY ...)

  • request an interactive job on the cluster (sinteractive)

Once you are on a node, you can load and run your program.