VMD is available through Open OnDemand for visualizing and analyzing molecular structures and trajectories.
To start it, go to ood.fit.edu, open Interactive Apps, and choose VMD. Set a GPU count of 1 on the form so the display runs on the graphics hardware instead of falling back to software rendering. Raise the memory request for long trajectories, since VMD holds every loaded frame in memory.
VMD opens inside a terminal window. That terminal is VMD's Tcl console, so type commands there. Closing it or quitting VMD ends your session.
A block of OptiX error messages appears at startup. This is expected and harmless. GPU ray tracing is not available, so for high quality rendered images choose TachyonInternal, which runs on the CPU and uses all the cores you requested.
For command line use on a compute node, run module load vmd and then vmd -dispdev text -e yourscript.tcl.