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Quickstart - from Zero to Visualisation in three Easy Steps

 

You want to start using the remote visualisation system? Great! Just take a few minutes to read through this page. Here, you will learn how to prepare your client (you need to install software on your client PC), log on to the remote visualisation server and start your favourite visualisation application.

This section describes the easiest way to get started on the remote visualisation system - you will get a remote desktop for one hour where you can start any of the installed visualisation applications by simple pointing and clicking. If you want to learn more, you can read the other sections where you can learn how the whole set-up works and what you can do to enhance performance. This "Quickstart" section is written for the newbie and gives a detailled step-by-step procedure, so without further ado, here you go:

In the shortest form, this is what you have to do:

  1. Install TurboVNC and set a vncpassword.
  2. Log on to a LRZ login node (e.g. lx64ia2, lx64ia3 ) and enter the following command: 
    $ ssh gvs3 rvnc
    to start a session on the remote visualisation server. Remember the display number that is returned by the command, e.g. 
    New 'X' desktop is gvs3:5
  3. Connect your vncviewer to the remote desktop by typing the following command on your local computer: 
    $ vncviewer -via userid@lx64ia2.lrz.de gvs3:5
  4. Start your favorite visualisation application by typing the following command in an xterm in the vnc viewer window: 
    $ rv run_vmd.sh

The time limit for execution of the visualisation application is now set to 12 hours, but be aware that the vncserver is terminated every morning at 4:00 thus requiring you to save your data before in order to prevent data loss.

Go to the next page or follow this link for a detailed step-by-step procedure for first-time users.

Note for MS-Windows Users:
Due to the changes in the LRZ firewall, the gvs servers are no longer accessible from outside. In order to use the remote visualisation service on a MS-WIndows Computer you have to start a tunnel on your local machine by using the tunnel option in PuTTY. For a description of establishing a tunnel start PuTTY and click on Connection/SSH/Tunnels. In the input field "Source port" enter 5901 and in the field "Destination" enter gvs3.cos.lrz.de:5905, if 5 is the display number you obtained from the gvs. Then click on the button "Add". The field should then read: 

L5901 gvs3.cos.lrz.de:5903

Then login to lx64ia2.lrz.de with PuTTY and you have established a tunnel.
In the input field for the VNC server Connection enter: "localhost:1". This will then provide you with a login to the remote visualisation server.

How to check the available GPUs
The command squeue shows the GPUs in use by the several users. The command sinfo shows the general availability of the gvs cluster nodes and GPUs.