Example: running Rstudio interactively with graphical interface
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In this case, Rstudio runs on the compute node.
The graphical interface goes through X11 forwarding from the compute node to display on your local computer.

Make sure an X server is installed on your local computer (e.g., `XQuartz <https://www.xquartz.org/>`_ for MacOS, `MobaXterm <https://mobaxterm.mobatek.net/download.html>`_ for Windows).


.. code-block:: text

    $ ssh -X user_id@hoffman2.idre.ucla.edu   # from your local computer
    …
    $ qrsh -l h_rt=2:00:00,h_data=4g          # on login node
    $ module load Rstudio/1.4.1717            # on compute node
    $ rstudio



If everything goes, you should see the RStudio graphical window on your local computer that looks like this:


.. image:: ../img/rstudio-qrsh.png
    :width: 500
    :alt: rstudio in qrsh