Archive for October, 2011
We provide users with a visualization system with IDL, MatLab, and Visit. X-Forwarding can be painfully slow, and we have found that using NXServer, or Googles open source NeatX equivalent, can provide much faster performance.
However, VisIt would launch when X-Forwarded, but not when using NXClient & NeatX. The only messages were:
Running: mdserver2.3.2 -host 127.0.0.1 -port 5601
VisIt's viewer exited abnormally! Aborting the Graphical User Interface. VisIt's developers may be reached via the visit-users mailing list. Please see:
I also found that glxinfo would return:
name of display: :826.0
Error: couldn't find RGB GLX visual or fbconfig
First, I created an xorg.conf to ensure GLX was actually being loaded. (It turned out this was not required as X was autodetecting everything fine without an explicit xorg.conf, but I include it here as it may be helpful in some cases to have an explicit xorg.conf)
(renamed xorg.conf and moved to /etc/X11. Ensured Section “Module” included Load “glx”, etc.)
glxinfo still would not work. I then set the following environmental variable:
Which allowd glxinfo, glxgears, etc. to work. For more information on this environmental, see:
This could then be made into a Gnome Desktop Launcher:
Exec=env LIBGL_ALWAYS_INDIRECT=yes /usr/local/visit/bin/visit
Perhaps the above may be useful to other VisIt users.