As of 2025, Red Hat Enterprise Linux (RHEL) 9 and compatible clones like Rocky Linux 9 and Oracle Linux 9 are widely supported in the latest releases of most solvers. However, not all solver versions are compatible with these newer operating systems. This post aims to assist clients in evaluating their current applications and planning migrations to newer CAE solver releases, which will be necessary for upcoming High-Performance Computing (HPC) clusters.
Many older HPC systems currently deployed in the field run RHEL 8.X, which Red Hat will support until May 2029. In certain industries, it’s common to rely on solver versions that are 3-5 years old or even on versions that are no longer officially supported but remain functional. Note that in some cases “not supported” also now means “won’t even work” on RHEL9, and so this post can help for planning.
| Application Name | Minimum App Version | First RHEL9 Supported Version | |
| Abaqus | 2024 FP07 | 9.0 | |
| STAR-CCM+ | 2310 | 9.0 | |
| Altair OptiStruct | 2025 | 9.4 | |
| Ansys Fluent | 2025R1 | 9.4 | |
| Ansys Mechanical | 2025R1 | 9.4 | |
| Ansys CFX | 2025R1 | 9.4 | |
| Ansys Polyflow | 2025R1 | 9.4 | |
| Ansys Electronics Desktop (HFSS/Maxwell) | 2025R1 | 9.4 | |
| Ansys Icepak Classic | (Classic not supported) | (Classic not supported) | |
| Ansys Forte | 2025R1 | 9.4 | |
| Ansys Siwave | 2025R1 | 9.4 | |
| COMSOL | 6.3 | 9.4 | |
| CONVERGE | 4.1.X | 9.4 | |
| Mathworks Matlab | 2022b | 9.0 | |
| Hexagon MSC Nastran | 2024.2 | 9.2 | |
| LS-DYNA | 9.3.1 for Intel MPI 2018 support |