All Solutions
How to Administrate Multiple Floating Network License Files on one License Server
Solution Number: 1058 Versions: All versionsYou 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 versionsI 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 versionsI 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 versionsWhen 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 ...
License Borrowing
Solution Number: 1016 Versions: All versionsHow do I borrow license keys on a Floating Network License or a Class Kit License? License borrowing means that you can use COMSOL (for a limited time) with a Floating Network License (FNL) or a Class Kit license (CKL) ...
Running COMSOL® in Parallel on Clusters
Solution Number: 1001 Versions: All versionsThis 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 ...
Error: Internal Error in Geometry Decomposition
Solution Number: 983 Versions: All versionsWhy do I get the error message “Internal error in geometry decomposition”? This error means that COMSOL Multiphysics failed to resolve the geometry relations. If your geometry consists of several objects, the objects ...
My Flux Calculation Seems Wrong
Solution Number: 973 Versions: All versionsI am solving a diffusion-like problem in COMSOL Multiphysics and discovered that boundaries that are defined with insulation/symmetry conditions have an integrated value of the normal component of the flux that is far ...
Error: Failed to Find a Solution. Returned Solution is Not Converged
Solution Number: 964 Versions: All versionsI get this message: Failed to find a solution. The relative residual (0.28) is greater than the relative tolerance. Returned solution is not converged. Messages similar to this are returned for nonlinear problems ...
Error: Singular Matrix
Solution Number: 953 Versions: All versionsWhat does the error message "Singular Matrix" mean? The problem is that the stiffness matrix of the linear system is singular and the linear solver cannot invert it. Examples of practical modeling situations where this ...