HPC Systems: Release of the ANSYS 2020.R1 Software

Dear users of the HPC systems at LRZ,

this notification concerns all users of the ANSYS software on both the SuperMUC-NG, Linux Clusters including all hosted Linux Clusters and RVS at LRZ.

In the 3rd week of January 2020 the new upcoming release of the ANSYS software, Release 2020.R1, has been installed on all LRZ Linux Clusters, SuperMUC-NG and the RVS systems. The LRZ documentation for the ANSYS software has been updated in due course and the module system will be updated within the next days. 


Hereby I would like to summarize a few important points about this next major release of the ANSYS software:

  • With the update of the module system the ANSYS 2020.R1 release will be made the default version for all ANSYS software components on LRZ compute resources. 
  • At the same time the outdated ANSYS software release 19.0 is no longer supported by LRZ so that the version has been deprecated. The corresponding 19.0 software modules are removed from the LRZ module system. The software installation itself will remain in place for a while and can still be used by experienced users on their own responsibility and risk.
  • The new ANSYS Release 2020.R1 is here at LRZ the first ANSYS Release which is now based on Intel MPI 2019 on all Linux Clusters and SuperMUC-NG. In particular for ANSYS Fluent this comes with some necessary changes in the command line options for Intel MPI and the used MPI Fabric for the communication networks of the clusters. Corresponding documentation is provided in the ANSYS Fluent documentation at LRZ:
    Therefore ANSYS Fluent users are advised to check their SLURM scripts and apply necessary changes.
  • ANSYS has furthermore introduced for ANSYS Fluent a new default results file format (*.h5 - HDF5 or Common Fluids Format file format - CFF). This new results file format is no longer directly compatible with postprocessing in CFD-Post, so that the dedicated export of a legacy file format CAS and CDAT file is now required for CFD-Post-based postprocessing. Users can use either a TUI journaling command or provided user preferences settings in ANSYS Fluent to use the CAS/DAT legacy file format with 2020.R1 release.

The installation of ANSYS 2020.R1 has been carefully tested on LRZ compute systems. If you nevertheless should observe some issues or not properly working functionality, please open a ticket at the service desk indicating "ANSYS:" in the ticket subject.

Verfasser: Th. Frank
veröffentlicht: 2020-01-17