HP Scalable Visualization Array Version 1.1 Visualization System Software Reference Guide

You can also use this command in interactive mode to launch non-OpenGL applications, for example, to
display high resolution images or other tasks. This is a convenient way to take advantage of the SVA multi-tile
display. Once the desktop environment appears in interactive mode, you can create icons to launch an
application. Refer to the SVA User's Guide for more information on running a script in interactive mode.
The script allocates cluster resources, launches necessary ancillary applications (for example, the X Servers
and DMX), runs the application on the right nodes, and terminates the application at the end of the session.
This command launches your application by requesting and allocating visualization nodes to the job. The
display takes place on the Display Surface you specify as an option, and which is specific to your cluster.
The launch script takes care of running the various Chromium portions (Mothership and Servers) on the
display nodes. Where the master application and DMX run is based on the SVA_EXECUTION_HOST value
for the Display Surface, as specified in the Configuration Data Files. You can determine this value by
examining the Site Configuration File /opt/sva/etc/sva.conf.
The launched application is denoted by a site-specific application command.
The script also terminates X and DMX Servers and cleans up the session when the program is done.
Important
Before running the script in interactive mode, you must set the DISPLAY environment variable to point to
the machine on which you want the display to appear, or the script fails.
Example
The following command runs the OpenGL atlantis application on the FULL_DISPLAY Display Surface
using Chromium and DMX. The FULL_DISPLAY Display Surface was created using the Display Surface
Configuration Tool. See the SVA System Administration Guide for detailed information on the Display Surface
Configuration Tool.
The application command string is unique and site-specific.
% sva_chromium_dmx.sh -d FULL_DISPLAY "/usr/X11R6/lib/xscreensaver/atlantis"
The following command runs the atlantis application on the FULL_DISPLAY Display Surface. Note the
use of the application-specific command line parameter -count 20.
% sva_chromium_dmx.sh -d FULL_DISPLAY /
"/usr/X11R6/lib/xscreensaver/atlantis -count 20"
The following command initiates an interactive session:
% sva_chromium_dmx.sh -d FULL_DISPLAY -I
The previous interactive command allocates resources for an interactive mode of operation. You can launch
regular X applications as normal. For OpenGL applications such as atlantis, you must use the command
a second time, with only the application pathname and any application-specific parameters:
% sva_chromium_dmx.sh "/usr/X11R6/lib/xscreensaver/atlantis"
Functions, Script Commands, and Environment Variables 31