How to Install a CPU-Locked License (CPU)
This guide explains how to install the COMSOL Multiphysics® software using a CPU-Locked License (CPU) on a specific computer. Any number of sessions of the software can be run on the system, but they cannot be accessed over the network or remotely. The hostid of the system connects the license to the computer, and the license version must also match the software version.
CPU-Locked Licenses allow access for multiple users on one system, as opposed to Named Single-User Licenses (NSL), which allow software access for one user on up to four personal systems. Floating Network Licenses (FNL) are the most flexible because they can offer access for multiple users on multiple systems.
A colored flowchart of the CPU-Locked installation steps per operating system.
A visualization of the differences for Windows®, macOS, and Linux® when upgrading COMSOL Multiphysics® with a CPU-Locked license
CPU-Locked Installations on Windows® and macOS
Confirm your CPU-Locked license License file includes the hostid for your personal machine. Then follow the installation instructions here: "How to Install COMSOL Multiphysics®".
Note: On Windows® and macOS, no additional setup is required. For Linux®, review the following section.
CPU-Locked Installations on Linux®
CPU-based (and NSL-based) installations of COMSOL Multiphysics® on Linux® require a locally running FlexNet® license manager to function. You can use the COMSOL Installer to install both parts. Continue to the next section for an overview of the process.
See "How to Install the License Manager for COMSOL Multiphysics®" to learn more about installing the license manager.
While Running the Installer on Linux®
- Choose New COMSOL Installation and enter your license information on the license page.
- Confirm the license manager and COMSOL Multiphysics® are both selected for installation, which is the default setting.
- Install your selected products.
After Closing the Installer on Linux®
- Verify that the license manager is running by referring to "How to Start the License Manager for COMSOL Multiphysics®".
You can begin using COMSOL Multiphysics® when the software is communicating with the license manager.
CPU-Locked Installation FAQs
Where is the version of the license found?
COMSOL Multiphysics® licenses usually have a comment at the top that indicates the version. Alternatively, you can find the version number in each FEATURE line. For example, the first FEATURE line in the license file will look like this:
FEATURE SERIAL LMCOMSOL X.Y permanent uncounted \
Here, X.Y represents the version number.
How are license files for a specific machine verified?
COMSOL Multiphysics® ties each license file (usually named license.dat) to a specific computer by its hostid (MAC address). This ensures that the software runs only on the machine with the matching hostid. To verify that your license is correctly assigned, open the license.dat file in a text editor and check that the hostid inside matches your computer’s hostid. For more details on looking up the hostid of a machine, refer to the instructions here: "Obtaining a HostID for Licensing".
The format of the hostid in the license file varies by platform. See below for OS-specific instructions.
On Windows® and macOS
Search for the keyword HOSTID=[12 digit alphanumeric]. The 12-character alphanumeric code immediately following this text is your computer's hostid.
On Linux®
Typically, the first line of the file displays something like SERVER my_server 123456789ABC 1718. In this line, the 12-character code (e.g., 123456789ABC) represents your machine’s hostid, and 1718 represents the port number.
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