SLAC ESD Software Engineering Group



Sunray CUD Information


SLAC Detailed

SLAC Computing

Software Home

Software Detailed

Documentation and Web Support




The MCC Constantly Updating Displays (CUDs) are now all linux based.  We are using cud01-cud99 as a naming convention.  There is symlink in the ~/.kde/Autostart/ that points to /usr/local/admin/script/  When a cud account is logged in the display information is gathered and put in /usr/local/admin/sunray/username . The file will be named "username" (ex. cud01) and the contents will be the display information (ex. sunsrv03:20.0).  This allows us to throw displays onto the cuds from the CUD display manager. 



To stop the Sunray from turning off the display add the following to the ~/.kde/Autostart

Autostart]# ls -l -> /usr/local/admin/scripts/
SR-ScreenBlanking -> /usr/local/admin/scripts/SR-ScreenBlanking sets up the X display mechanism for the cudmanager

-Creates a file in /usr/local/admin/sunray

Ex) file cud10 -> sunsrv06:19.

SR-ScreenBlanking prevents the Sunray from going dark

more SR-ScreenBlanking

# turn off the screen blanking on our Sun Ray Cuds
# -This gets called from Autostart
/usr/bin/xset s off -dpms



---------OLD Solaris CUD information

The Solaris Sunrays are used for overhead display purposes (CUDs) only. 

The node naming convention used is

                                           MCC    Rack   Level (1-bottom, 2 middle, 3 top)

                mcc138b2:         MCC     138b      2

The user login name for a Sunray is the nodename for the Sunray; e.g., the user login name for mcc138b2 is mcc138b2.

When the sunray is logged into, it runs ~/.dtprofile, which runs /usr/local/admin/scripts/ and /usr/local/scp/script/  The /usr/local/admin/scripts/ reads /etc/X.hosts4sunray (located in the Soalris Sunray servers) to authorize a list of hosts to send X displays to the sunray. The copies the display information for that particular sunray to our Linux NFS server (/usr/local/admin/sunray) directory writing it to a file named for the logged in user.

For example; user logs in as mcc138b2 on our sunray.  The display information is sunsrv01:14.0.  A file is created on mccfs2:/usr/local/admin/sunray/mcc138b2 with the contents being "sunsrv01:14.0". This display information will be used to send displays from the authorized hosts to Sunray mcc138b2.




Created by Ken Brobeck on Feb 26 2008.

Modified: Mar 03 2008 Jingchen ZHou