| 22 | 22 | Remote rendering is also possible using the Virtual Network Computing (VNC, e.g. [http://www.tigervnc.org TigerVNC] or [http://www.turbovnc.org/ TurboVNC]) package. VNC follows a very general approach, where a remote desktop on one node of the remote cluster is opened. On the users workstation only a lightwise VNC client (viewer) has to be installed. The image of the remote desktop is send from the cluster to the viewer on the fly. The user can work with this desktop in the usual way, just by interacting with keyboard and mouse. This is a very convenient way to work on a remote machine, not only for data visualisation. Whenever an OpenGL capable visualisation software, like !VisIt, is started on the remote node, OpenGL commands must be redirected to the GPU of this node with the help of [http://www.virtualgl.org/ VirtualGL] (command: vglrun). This way the hardware accelerated rendering capabilities of a cluster node can be exploit for remote rendering into a VNC window. A general overview about this topic is given [wiki:remote3d here].\\ |
