Learning Forum

[Marcelo Precoppe]

Hello,

I am trying to run a Ansys Fluent simulation at the University HPC cluster but I am facing a license server connection issue when I run the job in batch mode. The HPC runs on CentOS and uses Slurm scheduling. I am using Ansys Fluent 2023R2.

When I run Ansys Fluent at the head node of the HPC using Fluent GUI instead of batch mode, Fluent can connect to the license server and I am able to run a simulation. However, when I run in batch mode Fluent cannot connect to the license server and gives me this error message. I have checked that the license server is up and running and that ports 1055 and 2335 are not blocked by the firewall. I would appreciate any help or suggestions on how to solve this issue. Thank you.

[Federico]

Hello Marcelo, 

what is the error message that you get?

[Marcelo Precoppe]

Dear Federico,

Thanks for helping me with this. Basically, when I run on the head node of the HPC there are no issues, but on the other nodes, it cannot connect to the license server.

I hope the screenshots above allow you to guide us towards a solution.

Kind regards,

Marcelo

[VG]

Please point to the license server with fully qualified domain name. Add this environment variable to all nodes or in the script: ANSYSLMD_LICENSE_FILE=1055@me-lc6.gre.ac.uk