[OMPI users] CPC only supported when the first QP is a PP QP?

I'm trying to run an MPI RMA application on an IB cluster and find that Open MPI is using the pt2pt rdma component instead of openib (or UCX). I tried getting some logs from Open MPI (current 3.1.x git): ``` $ mpirun -n 2 --mca btl_base_verbose 100 --mca osc_base_verbose 100 --mca

[OMPI users] OMPI 4.0.1 + PHDF5 1.8.21 tests fail on Lustre

Hi, I’ve built parallel HDF5 1.8.21 against OpenMPI 4.0.1 on CentOS 7 and a Lustre 2.12 filesystem using the OS-provided GCC 4.8.5 and am trying to run the testsuite. I’m failing the testphdf5 test: could anyone help, please? I’ve successfully used the same method to pass tests when building

Re: [OMPI users] Debug OMPI errors

"Usually", Open MPI does emit something more detailed than just the equivalent of a one-line "process aborted" message. Open MPI does de-duplicate most error/help messages, too, so you should see most kinds of descriptive error messages once, and potentially a few more "X more messages showed