[OMPI devel] Processes returns wrong results on OpenMPI 4.0.4 unless $OMPI_MCA_pml is set to "^ucx"

OS: Fedora 33, the latest OpenMPI 4.0.4 gcc 10.2.1 20201125 (Red Hat 10.2.1-9) For the source code from the link: https://stackoverflow.com/questions/65281642/mpi-returns-incorrect-results-for-one-of-processes some processes randomly return wrong results on the given configuration. When

[OMPI devel] Open MPI v4.0.6 rc1 available for testing.

The first release candidate for Open-MPI v4.0.6 rc1 is now available for testing:https://www.open-mpi.org/software/ompi/v4.0/   Some fixes include:     - Update embedded PMIx to 3.2.2.  This update addresses several