Ansys Learning Forum › Forums › Discuss Simulation › LS Dyna › License Issue for Development Version of LS-DYNA on Supercomputer › Reply To: License Issue for Development Version of LS-DYNA on Supercomputer

May 8, 2024 at 6:52 pm
Reno Genest
Ansys Employee

Hello Kendrick,

You should be able to use both the Ansys and LSTC licenses to run the DEV LS-DYNA solver. It works on my machine.

LSTC license:

The following error message indicates a communication problem between the client machine and the LSTC license server:

 *** Error License client cannot find any servers to talk to.
               Servers may be down, not ready, or the wrong version.

Here are potential root causes:

  • The LSTC license server is not running.
  • LS-DYNA is pointing to the wrong LSTC license server (this can happen if the environment variables are not set properly).
  • There is no network route between the LS-DYNA solver on the client machine and the LSTC License Server. Try to ping the server from the client machine.
  • A firewall is blocking the connections from LS-DYNA to the license server.

When using the LSTC license, make sure the following 2 environment variables are set on the client machines (where you run the LS-DYNA solver):

LSTC_LICENSE=network

LSTC_LICENSE_SERVER=31010@hostname_of_LSTC_License_Server

 

The above 2 environment variables will have precedence over the LSTC_FILE and so you don't need the LSTC_FILE. Maybe the environment variables are currently not set properly and they have precedence over the LSTC_FILE and pointing to the wrong LSTC license server.

Also, in the above env var, I specify 31010 which is the default port for the LSTC license manager. If the default port was not changed, make sure that port 31010 is open on both the license server and the client machines (check firewall).

Let me know how it goes after doing the above.

You will find more information on the LSTC license on Linux here:

https://ftp.lstc.com/user/download-instructions/License-Manager/LSTC_LicenseManager-InstallationGuide.pdf

Username: user

Password: computer

 

Ansys license:

To use the Ansys license to run the LS-DYNA solver, set the following environment variables on the client machines:

LSTC_LICENSE=ansys

ANSYSLMD_LICENSE_FILE=1055@SERVER_HOSTNAME

 

Let me know how it goes.

 

Reno.