====== Graphical sessions ======


We provide an interactive node (**mesoshared.univ-fcomte.fr**) for graphical sessions like:

  * File editing
  * Running matlab/comsol (we recommand batch mode using SGE)
  * Results post-processing
  * File Transfer 
  * ...


 <WRAP center round tip 60%>
  * This node is shared between users and is not managed by a resources manager (GridEngine).
  * This node is managed by X2Go software. 
  * This node have 32 cores Intel Nehelm (2.2GHz) and 64Go of memory.
</WRAP>

<note warning>
The system on the cluster is old, so X2Go no longer works correctly with current clients.\\ 
Instead, you need to use : **[[x2go#graphical_ssh|ssh -X]]**
</note>

====== X2Go ======
 

''X2Go'' enables users to access a graphical desktop over low or high bandwidth connections. It provides a remote desktop solution tunneled over ''SSH'' supporting file and printer sharing.

We recommend that users install the latest version of ''X2Go'' by downloading it from https://wiki.x2go.org/

<note warning>
For Microsoft Windows users\\ there is a BUG with the lastest x2go client version.
Please the older versions. For example : https://code.x2go.org/releases/binary-win32/x2goclient/releases/4.1.0.0-2017.03.11/ 
</note>
===== Connecting to mesoshared =====


  - Start the **x2goclient** software and click the New Session button as shown: {{ :x2go1.png |}}
  - Specify **mesoshared.univ-fcomte.fr** in the host field and choose **GNOME** as Desktop Environment in Session type:{{ :x2go2.png?600 |}}
  - Click the connection to start it. {{ :x2go3.png?600 |}}
  - Enter your username and password. {{ :x2go4.png?600 |}}
  - Enjoy the remote desktop connectivity. {{ :x2go5.png |}}
  - From menu Applications > System tools > Terminal.  Open a terminal and go to WORK space 
  - <code bash>cd $WORK </code> Load and run your application ; for example ; load matlab <code bash>$ module load matlab</code> run matlab <code bash>$ matlab</code>

===== X2GO Options=====

  * For better performances we encourage to __disable sound support__ and __client side printing__: go to ''session preferences'' / ''media'' panel and disable those options
  * Remote file sharing is disabled for now.

====== Graphical SSH ======
===== Windows =====

Windows does not provides an X server, so you have to download and install one: e.g. ''Xming'' or ''VcXSrv''.\\
On your SSH client, you will also have to configure ''X11 forwarding''.

For example for PuTTY, the ''X11 forwarding'' settings are inside ''Connection''→''SSH''→''X11'' category.
{{::putty_x11_forward-a0dc6e74d4c0fb7a63e0ec7d3ad276ee.png|}}

===== Linux =====
To connect with X11 support (usually required for applications with graphical user interfaces), use the -X or -Y switch with SSH command:
<code bash>
$ ssh -X youraccount@mesoshared.univ-fcomte.fr
</code>