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 changed, you must restart the license manager; otherwise, it continues to use the old license file still in memory.

restarting the license manager

To restart the license manager:

1	Launch the Terminal application.

2	Change the directory to the license/maci64 (64-bit)

cd /Applications/COMSOL52a/Multiphysics/license/maci64

3	Enter the commands

./lmdown -c ../license.dat

./lmgrd -c ../license.dat -l /var/tmp/comsol52a.log

obtaining a hostid

If you need to verify the hostid of the license server, you can follow the steps in Obtaining the Hostid. Alternatively, if COMSOL is already installed on the license server, you can determine the hostid by executing the lmhostid command

COMSOL52a/Multiphysics/license/maci64/lmhostid

The hostid is typically the Ethernet address (also called a MAC address) of the network card of your computer. An Ethernet address has six bytes, each with two hexadecimal digits. Thus, the full hostid has twelve hexadecimal digits.