[OMPI devel] PML check for direct modex reviews needed (5.0 blocker)

[Kothari, Dipti via devel]

Hi,

The issues blocking testing of PR https://github.com/open-mpi/ompi/pull/7582 
with UCX have been resolved. @karasevb has posted the performance numbers for 
UCX. @artpol84 @karasevb, could you please review the PR?

Thanks,
Dipti Kothari