It may or may not be an appropriate solution for your use cases, but I second using Open OnDemand and its virtual desktop. It is FAR more performant than X11 through Slurm/SSH.
*Jason L. Simms, Ph.D., M.P.H.* Research Computing Manager Swarthmore College Information Technology Services (610) 328-8102
On Fri, Jun 6, 2025 at 8:40 AM Hadrian Djohari via slurm-users < slurm-users@lists.schedmd.com> wrote:
Or use Open OnDemand platform for the interactive Desktop. https://openondemand.org/
On Fri, Jun 6, 2025 at 8:37 AM John Hearns via slurm-users < slurm-users@lists.schedmd.com> wrote:
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%5C
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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-- Hadrian Djohari Director of Advanced Research Computing, [U]Tech Case Western Reserve University (W): 216-368-0395 (M): 216-798-7490
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