Add --display-comm{-finalize} to OMPI CLI

[jjhursey]

No description provided.

[jjhursey]

Open MPI community requested this CLI option. Companion PR (though they are not dependent) open-mpi/ompi#8313

I choose -prot and -protlazy since those are the CLI names that Spectrum MPI uses.

[jjhursey]

Per Open MPI Teleconf Jan. 5, 2021:

• Put this out for comment.
• If no objections then we will merge on Jan. 12, 2021 after OMPI teleconf.

[jjhursey]

Requires open-mpi/ompi#8313 from OMPI to work - otherwise, it is ignored.

[abouteiller]

Looks good but I'm not a big fan of the option name. protlazy looks like a control rather than a debug/display control.

What about --display-comm and display-comm-finalize, for uniformity with display-map ?

[jjhursey]

What about --display-comm and display-comm-finalize, for uniformity with display-map ?

I like that. Keeps it consistent with the other --display reporting options.

[jjhursey]

I just pushed the adjustment to rename it from -prot/-protlazy to --display-comm/--display-comm-finalize