LSTC LS-DYNA builds for the current os/openmpi stacks

[moskalenko]

I wonder if a recent LSTC version of LSTC LS-DYNA (e.g. R16 or R15) could be built against a more modern software stack including both os dependencies and openmpi. The builds we see on the prebuilt distribution download ftp server appear to be built on centos7.9 against openmpi-4.0.5. They do not work in our more modern HPC environment. Our current openmpi stack is RHEL8, OpenMPI-4.1.6,  but we are currently testing all our application installs for compatibility and preparing to move to RHEL9 and OpenMPI-5.0.7 / OpenMPI-4.1.8 soon. We would be able to build any recent OpenMPI-4.1.6-4.1.8 on EL9 as long as there is no CVE against a particular version. As things stand LSTC LS-DYNA builds are currently done on obsolete/unsupported and vulnerable software stacks. We can't go back to those older versions as they have published vulnerabilities and our researchers need to run OpenMPI based LSTC LS-DYNA workloads. We would be happy to use any recent pmix (5, 4, 3) in our openmpi builds to achieve compatibility with whatever LSTC builds are produced.

 

Thanks!

 

Alex

 

[igandiko]

 

 

 

Hello Alex,

What issues/errors are you facing running R15/R16 on RHEL 8 with open mpi 4.1.6? Though the solvers are built on Cent OS 7.9, they are supported for RHEL 8.6, 8.8, 8.0 and RHEL 9.4 (https://www.ansys.com/content/dam/release/2025-r1/platform-support/ansys-2025-r1-platform-support-by-application.pdf). I am also not aware of any issues using newer verisons of open mpi. All OpenMPI 4.x are backward compatible as specified on OpenMPI.org

If you face any issues running on RHEL 9, please let us know. We can send you a solver built on RHEL 8 which should be compatible with RHEL 9.