Simon, I have had success in the past by using NICE DCV (now owned by AWS but you can get licenses for on prem) 
https://www.ni-sp.com/products/nice-dcv

An alternative would be VirtualGL

Altair Access (though more likely to work with PBS!)  https://altair.com/access\

On Fri, 6 Jun 2025 at 10:42, Simon Andrews via slurm-users <slurm-users@lists.schedmd.com> wrote:

On our cluster we’ve noticed that if we use the native x11 slurm plugin (PrologFlags=x11) then X applications work, but are really slow and unresponsive.  Even opening menus on graphical application is painfully slow.

 

On the same system if I do a direct ssh connection with ssh -YC from the head node the same applications are quick and responsive.

 

Any suggestions for what might be causing this, and how I can get the native x11 to have the same responsiveness as a direct ssh connection?

 

Many thanks

 

Simon.

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