Hi folks Per today's telecon, here is a link to a description of the HWLOC duplication issue for many-core environments and methods by which you can mitigate the impact.
https://openpmix.github.io/support/faq/avoid-hwloc-dup George: for lower-level libs like treematch or HAN, you might want to look at the envar method (described about half-way down the page) to avoid directly linking those libraries against PMIx. That wouldn't be a problem while inside OMPI, but could be an issue if people want to use them in a non-PMIx environment. Ralph
