Source: adios4dolfinx Followup-For: Bug #1071722 Santiago, could you try running with
export OMPI_MCA_rmaps_base_oversubscribe=true added to the top of debian/rules? I think that will get it working on your test system. I think the problem is that openmpi does not use hwthreads or oversubscribe by default. So your error is saying you're trying to run 2 processes on 1 core.

