[slurm-users] SLURM 20.11.0 no x11 forwarding.

Tina Friedrich tina.friedrich at it.ox.ac.uk
Tue May 4 10:57:24 UTC 2021

No idea if I replied this to this particular thread already (if I have 
sorry for the duplicate).

I had issues getting X forwarding to work with SLURM at the start. 
Worked via SSH; no authentication / xauth problems when doing via SLURM.

Turned out to be caused by the nodes having their hostname set to their 
'long' hostname (i.e. including domain) - I think that might be Red Hat 
default? I 'fixed' it by changing things so all things cluster (i.e. all 
things that have SLURM installed) have their hostname set to the short 


On 03/05/2021 17:53, Prentice Bisbal wrote:
> On 4/23/21 1:11 PM, Luis R. Torres wrote:
>> I believe that was the case, we compiled it with x11 support, however, 
>> further debugging suggests that there's an issue writing to the 
>> .Xauthority file when using forwarding through srun.
> If you're getting an .Xauthority error, then X11 support was definitely 
> compiled into Slurm. The most common cause of .Xauthority issues is the 
> user's home directory hitting their quota limit. Could that be the case 
> here?
> -- 
> Prentice

Tina Friedrich, Advanced Research Computing Snr HPC Systems Administrator

Research Computing and Support Services
IT Services, University of Oxford
http://www.arc.ox.ac.uk http://www.it.ox.ac.uk

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