Good question. I've filed https://github.com/open-mpi/ompi/issues/8379 so that we can track this.
> On Jan 14, 2021, at 7:53 AM, Dave Love via users <users@lists.open-mpi.org> > wrote: > > Why does 4.1 still not use the right defaults with UCX? > > Without specifying osc=ucx, IMB-RMA crashes like 4.0.5. I haven't > checked what else it is UCX says you must set for openmpi to avoid > memory corruption, at least, but I guess that won't be right either. > Users surely shouldn't have to explore notes for a fundamental library > to be able to run even IMB. -- Jeff Squyres jsquy...@cisco.com
