A threading code with MPI where MPI_Init_thread uses MPI_THREAD_MULTIPLE will fail because UCX from HPCX package is built without enabling multi-threading. UCX is the default framework for OMPI 4.0 and above.
Affects versions
Owens: openmpi/4.0.3-hpcx, openmpi/4.1.2-hpcx, penmpi/4.1.4-hpcx
Ascend: openmpi/4.1.3
