Changing the License
If you have received a new license file — for example, when adding COMSOL products to an existing license — replace the current license file with the new one. Double-check the contents of this file to make sure it lists the products that the license includes.
When the license file has been changed, you must restart the license manager or reread the license file; otherwise, it continues to use the old license file still in memory.
restarting the license manager
To restart the license manager, make the license/$arch directory under the COMSOL installation directory the current directory, then enter the following commands:
./lmdown -c ../license.dat
./lmgrd -c ../license.dat -l /var/tmp/comsol64.log
When installed as a service on Linux distributions with systemd according to the instructions, you stop it with the service lmcomsol stop command and start it with the service lmcomsol start command.
obtaining a hostid
If the COMSOL software is already installed on your license server, you can determine the hostid by executing the lmhostid command:
comsol64/multiphysics/license/glnxa64/lmhostid
or
comsol64/multiphysics/license/glnxarm64/lmhostid
depending on your CPU architecture.