Updated 2020-04-07

Run GrADS Interactively on the Cluster

Overview

  • Running GrADS is very similar to running any other interactive program.
  • You must use either VNC or X11 to display the GUI. If you have not run an interactive program on the cluster before, please visit those links to set up your computer to run interactive programs.

Note

The following recaps assume that you have already set up VNC or X11 before.

Recap of Connecting to VNC

  • Please see the VNC guide for instructions on how to set up the Interactive VNC session

Recap of Connecting to X11

  • Start up your X Server (XQuartz on macOS, VcXsrv on Windows).
  • SSH in with the -Y flag like this: ssh -Y someuser3@login-s.pace.gatech.edu.

Starting GrADS in VNC

  • Open terminal in VNC window by clicking top left Applications > System Tools > scroll down to terminal.
  • All commands here on will be typed in terminal in VNC.
  • Run module load grads/2.0.1
  • Run the grads command to start GrADS.
  • The terminal will ask you if you would like Landscape mode. Type yes or no depending on your preference.
  • The terminal should now look like this:
[svemuri8@iw-h31-24 ~]$ grads

Grid Analysis and Display System (GrADS) Version 2.0.1
Copyright (c) 1988-2011 by Brian Doty and the
Institute for Global Environment and Society (IGES)
GrADS comes with ABSOLUTELY NO WARRANTY
See file COPYRIGHT for more information

Config: v2.0.1 little-endian readline printim grib2 netcdf hdf4-sds hdf5 opendap-grids,stn geotiff shapefile
Issue 'q config' command for more detailed configuration information
Landscape mode? ('n' for portrait):  y
GX Package Initialization: Size = 11 8.5 
ga-> 
  • The GrADS GUI should also be open now. There should be nothing displayed on it.
  • You can now run commands in the GrADS prompt open on the terminal.

Starting GrADS in X11

  • After you SSH into the cluster with the -Y flag, run module load grads/2.0.1.
  • Run the grads command to start GrADS.
  • The terminal will ask you if you would like Landscape mode. Type yes or no depending on your preference.
  • The terminal should now look like this:
[svemuri8@login-s2 argtable]$ grads

Grid Analysis and Display System (GrADS) Version 2.0.1
Copyright (c) 1988-2011 by Brian Doty and the
Institute for Global Environment and Society (IGES)
GrADS comes with ABSOLUTELY NO WARRANTY
See file COPYRIGHT for more information

Config: v2.0.1 little-endian readline printim grib2 netcdf hdf4-sds hdf5 opendap-grids,stn geotiff shapefile
Issue 'q config' command for more detailed configuration information
Landscape mode? ('n' for portrait):  y
GX Package Initialization: Size = 11 8.5
ga-> 
  • The GrADS GUI should also be open now. There should be nothing displayed on it.
  • You can now run commands in the GrADS prompt open on the terminal.

GrADS Example

  • Following the example found here and after executing d ps, we can see this on the GrADS display:

Screenshot