Visualization

docs.it4i/barbora/visualization.md

 # Visualization Servers
 
-Remote visualization with [NICE DCV software][3] is availabe on two nodes.
+Remote visualization with [VirtualGL][3] is availabe on two nodes.
 
 * 2 nodes
 * 64 cores in total
@@ -47,4 +47,4 @@ Remote visualization with [NICE DCV software][3] is availabe on two nodes.
 
 [1]: ../general/shell-and-data-access.md#graphical-user-interface
 [2]: ../general/shell-and-data-access.md#vpn-access
-[3]: ../software/viz/NICEDCVsoftware.md
+[3]: ../software/viz/vgl.md

docs.it4i/software/viz/vgl.md

+# VirtualGL
+
+VirtualGL is an open source program that redirects the 3D rendering commands from Unix and Linux OpenGL applications to 3D accelerator hardware in a dedicated server and displays the rendered output interactively to a thin client located elsewhere on the network.
+
+See the documentation [here][a].
+
+VirtualGL is available on Barbora and Salomon.
+
+## How to Use
+
+**Run VNC**
+
+* Local machine
+
+```console
+root@toshiba:~# ssh -L 5999:localhost:5999 kru0052@login1.barbora.it4i.cz -X
+```
+
+* Server
+
+Read our documentation on [VNC server][1].
+
+```console
+Warning: No xauth data; using fake authentication data for X11 forwarding.
+Last login: Tue Mar  3 14:20:18 2020 from vpn-kru0052.it4i.cz
+                  ____             _
+                 |  _ \           | |
+                 | |_) | __ _ _ __| |__   ___  _ __ __ _
+                 |  _ < / _` | '__| '_ \ / _ \| '__/ _` |
+                 | |_) | (_| | |  | |_) | (_) | | | (_| |
+                 |____/ \__,_|_|  |_.__/ \___/|_|  \__,_|
+
+
+                  ...running on Red Hat Enterprise Linux 7.x
+
+kru0052@login1:~$ vncserver :99
+
+New 'login1.barbora.it4i.cz:99 (kru0052)' desktop is login1.barbora.it4i.cz:99
+
+Starting applications specified in /home/kru0052/.vnc/xstartup
+Log file is /home/kru0052/.vnc/login1.barbora.it4i.cz:99.log
+
+kru0052@login1:~$
+```
+
+* Connect to a VNC server from a VNC client (local machine)
+
+![](../../img/vnc.jpg)
+
+!!! tip
+    To resize the window scale, use the `xrandr -s 1920x1200` command.
+
+**Run vglclient on the login server (use the terminal in the VNC window)**
+
+```console
+kru0052@login1:~$ ml VirtualGL
+kru0052@login1:~$ vglclient
+
+VirtualGL Client 64-bit v2.6.1 (Build 20200228)
+Listening for unencrypted connections on port 4242
+
+```
+
+![](../../img/client.jpg)
+
+**Execute an interactive job on vizserv (use another terminal in the VNC window)**
+
+```console
+kru0052@login1:~$ qsub -q qviz -I -A EASYBUILD -X
+qsub: waiting for job 44781.isrv1 to start
+qsub: job 44781.isrv1 ready
+
+kru0052@vizserv1:~$
+```
+
+![](../../img/job.jpg)
+
+**New SSH connection on vizserv - elimination of the PBS setting (use another terminal in the VNC window)**
+
+```console
+kru0052@login1:~$ ssh vizserv1 -X
+Last login: Tue Mar  3 13:54:33 2020 from login1.barbora.it4i.cz
+kru0052@vizserv1:~$
+```
+
+![](../../img/ssh.jpg)
+
+**Run the graphical application**
+
+```console
+kru0052@vizserv1:~$ vglrun /apps/easybuild/glxgears
+[VGL] NOTICE: Automatically setting VGL_CLIENT environment variable to
+[VGL]    10.32.2.1, the IP address of your SSH client.
+libGL error: unable to load driver: swrast_dri.so
+libGL error: failed to load driver: swrast
+17128 frames in 5.0 seconds = 3425.573 FPS
+17251 frames in 5.0 seconds = 3450.128 FPS
+...
+```
+
+![](../../img/glxgears.jpg)
+
+## Examples for Remote Visualization on Barbora Cluster
+
+<div align="center">
+  <iframe  width="854" height="480" src="https://www.youtube.com/embed/BArIbIC_-24"></iframe>
+</div>
+
+[1]: ../../../general/accessing-the-clusters/graphical-user-interface
+
+[a]: https://www.virtualgl.org/

mkdocs.yml

@@ -209,6 +209,7 @@ nav:
       - ParaView: software/viz/paraview.md
       - In situ: software/viz/insitu.md
       - NICE DCV: software/viz/NICEDCVsoftware.md
+      - VirtualGL: software/viz/vgl.md
     - PBS Pro Documentation: pbspro.md
 
 extra: