View source for X11 forwarding batch interactive jobs

==Introduction== 

In some cases it is useful to run a compute- or memory-intensive program with a graphical user interface (GUI). Such computations should not be run on a login node but on a compute node through the batch system. You can use batch interactive jobs with X11 forwarding.

==Preparation==
Please make sure that you have an SSH config file in your home directory

 $HOME/.ssh/config

which contains the line

 Host *
    ForwardX11Trusted yes

This is required for running a batch interactive job with X11 forwarding enabled.

==Submitting X11 forwarding batch interactive jobs==
To run xterm as an X11 forwarding batch interactive job, you would need to connect to Euler with X11 forwarding enabled and run the following command

'''Slurm''':
 [nmarounina@eu-login-40 ~]$  '''srun --pty --x11 bash'''
 srun: job 1465178 queued and waiting for resources
 srun: job 1465178 has been allocated resources
 [nmarounina@eu-a2p-530 ~]

After submitting your interactive job, you would need to wait until the session gets dispatched on a compute node. You can request the resources for your interactive job the same way as for batch jobs.

==Troubleshooting X11 forwarding batch interactive jobs==
Check your settings for [[Getting_started_with_clusters#X11|SSH and X11 forwarding]].