“Error: Could not connect to Ansys license server specified at:…”

[tingjun.zheng18]

Hello,

I am in the process of installing and running ANSYS Lumerical on my college's high-performance computing cluster, which I don't have root access to. The cluster runs RHEL 8 and has no GUI, so I have to do everything through the command line.

I tried to configure my license by setting the environment variable, ANSYSLMD_LICENSE_FILE, by doing "export ANSYSLMD_LICENSE_FILE=1055@{myserver}" following this KB Lumerical license configuration from the command line – Ansys Optics. {myserver} is what I would normally put in the license section in the Ansys Optics Launcher on my personal desktop, which works fine.

However, on the HPC, I still get an error in the .log file saying the following:

"""

All processes are communicating and ready to proceed to simulation...
CPU threads per process: 1
Error: Could not connect to Ansys license server specified at 1055@{myserver}
Would you like to reconfigure your license settings?, Response: No
License error: Could not connect to Ansys license server specified at 1055@{myserver}
Error: there was a failure with the license. Process number: 0 had this error

"""

Can I please get some help on configuring my license properly on the cluster? I really appreciate any help you can provide.

[Rajeshwari Jadhav]

 

Hi Tingiun,

Check if you are able to communicate with server follow below command in your command prompt/terminal.

ping servername

telnet servername portno.

If it passes both then please add both the variable and try again.

ANSYSLMD_LICENSE_FILE=1055@servername

ANS_FLEXLM_DISABLE_DEFLICPATH=1

 

[tingjun.zheng18]

Hi Rajeshwari,

Thank you for your reply. I have tested the communication with my license server, and the results are as follows:

• ping {servername}: it returns replies, e.g. “64 bytes from {myserver} (2a0c:5bc0:4c:ff::92b3:20eb): icmp_seq=1 ttl=119 time=3.45 ms”
• telnet {servername} {portno}: our HPC does not have telnet installed, so I used a bash built-in alternative timeout 3 bash -c “/dev/tcp/servername/portno” && echo OPEN || echo CLOSED, which returns OPEN.

I think our HPC can communicate with my license server on port 1055. I have added the environmental variables and tried again. However, I am still getting exactly the same error.

Do you have any idea what else might have gone wrong? Thanks in advance for your help!