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COMSOL Installation Companion

Solution Number: 1077 Versions: All versions

This article walks you through installing COMSOL Multiphysics. This article summarizes the installation process. For complete installation and operating instructions, see the COMSOL Multiphysics® Installation and ...


Problems running a classkit license (CKL)

Solution Number: 1078 Versions: All versions

I just received the new installation package and installed COMSOL including the new license manager files for my Class Kit option License file (CKL). When I start COMSOL I get one of these error messages: Could not ...


BDF, Generalized Alpha, and Runge-Kutta Methods

Solution Number: 1062 Versions: All versions

What numerical methods are available when using a Time-Dependent Solver? What are their relative benefits and when should I use them? The Time-Dependent Solver offers three different time stepping methods: The ...


Error: Licensed number of users already reached

Solution Number: 1059 Versions: All versions

I have a floating network license and get an error message dialog box  containing the phrase: Licensed number of users already reached I am quite sure that nobody else on the network is using the license. The detailed ...


How to administrate multiple floating network license files on one license server

Solution Number: 1058 Versions: All versions

You can control multiple COMSOL network licenses from the same license server. As a license administrator, you can get full control over who is allowed to use each of the licenses on the network. In this solution we ...


Warning: New constraint force nodes detected

Solution Number: 1056 Versions: All versions

I get this error message: Warning: New constraint force nodes detected. What does it mean? As is indicated in the message, this is a warning message and not an error message, meaning that your model may be just fine. ...


Error: "Out of memory"

Solution Number: 1030 Versions: All versions

I get an error message, that contains the words Out of memory, for example: Out of memory during LU factorization. or Out of memory during assembly # Background Before resolving this issue, you should go through ...


Updating the COMSOL License Manager

Solution Number: 1022 Versions: All versions

When starting COMSOL Multiphysics, I receive this error message: Could not obtain license for COMSOL Multiphysics GUI. License error: -25 License server system does not support this version of this feature or ...


License borrowing

Solution Number: 1016 Versions: All versions

How do I borrow license keys on a floating network license or a class-kit? License borrowing means that you can use COMSOL (for a limited time) with a Floating Network License (FNL) or a Class Kit license (CKL) without ...


Running COMSOL® in parallel on clusters

Solution Number: 1001 Versions: All versions

This solution describes how you enable distributed parallelization (cluster jobs) in COMSOL Multiphysics®. COMSOL supports two mutual modes of parallel operation: shared-memory parallel operations and distributed ...