Learning Forum

[dv.makarov]

Hello,

1. We are using a locally installed workstation as ANSYS license server and running ANSYS Fluent at NI Kelvin-2 HPC facility (https://www.ni-hpc.ac.uk/Kelvin2). 
To point to our license file the environmental settings are as follows:
------------------------------------------------------------------------------------------------------------------------------------------

module load ansys/xxx
export ANSYSLI_SERVERS=2325@xxx.xxx.xxx.xxx
export ANSYSLMD_LICENSE_FILE=1055@xxx.xxx.xxx.xxx
export LM_LICENSE_FILE=/apps/ansys_inc/shared_files/licensing/license_files/xxxxxxx.lic
------------------------------------------------------------------------------------------------------------------------------------------

Fluent 2023.R1 connects to default license at the HPC site (which is different from ours), when Fluent 2020.R2 reaches our university ANSYS license file all right. 
The issue is observed running Fluent 2023.R1 both at background (using “sbatch” with a shell script) and foreground (using “srun” command).
The issue is not observed when running ANSYS Fluent 2023.R1 within our university network.

What differences in 2020.R2 and 2023.R1 licensing could be the reason for such a different behaviour at the remote HPC facility, please?

2. Previously there was a document explaining ANSYS LM Centre environmental variables and settings (e.g. “ANSYS Licensing 2022.R1 Communication ports”) – do we have the same for 2023.R1, please?

Thank you!

Kind regards,
Dmitriy

[George Karnos]

Hello Dmitry,

Try setting the following environment variable also:
ANS_FLEXLM_DISABLE_DEFLICPATH=1
This will ignore any server specifications in your ansyslmd.ini file.
That is probably where it see your old server.

/apps/ansys_inc/shared_files/licensing/ansyslmd.ini

You can see environment variables in the licensing Guide for 2023 R2 in Chapter 2 section 3.

[dv.makarov]

Hello George,

Thank you for the suggestion.

The only difference after introducing variable "ANS_FLEXLM_DISABLE_DEFLICPATH=1" - my Fluent 2023R1 couldn't start at all (please see Fluent console printout below).

We engaged IT staff managing the HPC, they believe they will need talk to ANSYS person on details of licensing - I am contacting our academic account manager for that. 

Meanwhile - please let us know if you have further suggestions.

Yours,

Dmitriy

================================================================================================

Opening input/output transcript to file "/users/XXXXXXX/fluent/fluent-20231209-173830-93491.trn".

Auto-Transcript Start Time:  17:38:30, 09 Dec 2023 

/XXXX/XXXXX/XXXXX/ansys/v231/fluent/fluent23.1.0/bin/fluent -r23.1.0 3ddp -pshmem -host -t16 -mpi=intel -path/XXXX/XXXXX/XXXXX/ansys/v231/fluent -ssh -cx node166.pri.XXXX.XXXX.network:38318:44581

Starting /XXXX/XXXXX/XXXXX/ansys/v231/fluent/fluent23.1.0/lnamd64/3ddp_host/fluent.23.1.0 host -cx node166.pri.XXXX.XXXX.network:38318:44581 "(list (rpsetvar (QUOTE parallel/function) "fluent 3ddp -flux -node -r23.1.0 -t16 -pshmem -mpi=intel -ssh") (rpsetvar (QUOTE parallel/rhost) "") (rpsetvar (QUOTE parallel/ruser) "") (rpsetvar (QUOTE parallel/nprocs_string) "16") (rpsetvar (QUOTE parallel/auto-spawn?) #t) (rpsetvar (QUOTE parallel/trace-level) 0) (rpsetvar (QUOTE parallel/remote-shell) 1) (rpsetvar (QUOTE parallel/path) "/XXXX/XXXXX/XXXXX/ansys/v231/fluent") (rpsetvar (QUOTE parallel/hostsfile) "") (rpsetvar (QUOTE gpuapp/devices) ""))"

 

              Welcome to ANSYS Fluent 2023 R1

 

              Copyright 1987-2023 ANSYS, Inc. All Rights Reserved.

              Unauthorized use, distribution or duplication is prohibited.

              This product is subject to U.S. laws governing export and re-export.

              For full Legal Notice, see documentation.

 

Build Time: Nov 28 2022 09:30:46 EST  Build Id: 10208  

 

Connected License Server List:

 

ANSYS LICENSE MANAGER ERROR:Request name cfd_solve_level2 does not exist in the licensing pool.

FLEXlm server is not responding. Resource temporarily not available."

==================================================================================

 

[MangeshANSYS]

Hello,

The error "FLEXlm server is not responding. Resource temporarily not available" is known to occur when there are either network latency or DNS issues.

Usually this  happens when the client is unable to resolve the hostname of the license server specified on the "SERVER" line in the license file on the license server (/apps/ansys_inc/shared_files/licensing/license_files/xxxxxxx.lic). Please "grep" that line for SERVER and see what is specified.

Then either configure DNS or update the hosts file so that the hostname or FQDN on the SERVER line can be resolved to an IPv4 address by the nodes where Fluent is running.

a second option is to introduct these variables just before the job runs. Also maintain the ANSYSLMD_LICENSE_FILE and ANSYSLI_SERVERS variables. the LM_LICENSE_FILE variable is not necessary and I would recommend removing or commenting it out.

FLEXLM_TIMEOUT=20000000

FNP_IP_ENV=1

ANSYSLI_TIMEOUT_FLEXLM=20
ANSYSLI_FLEXLM_TIMEOUT_ENV=20000000
This should help