Hi @sciencecw,
Our expert in RDataFrame is @eguiraud; unfortunately, he is currently on vacations. I will try to reply as accurately as possible to your question.
As can be seen here, support for multiple threads has to be enabled via ROOT::EnableImplicitMT(); however, I don’t know whether this plays well with Python. Maybe, @vpadulan can also provide some information on this. Also see this related forum topic.
Additionally, we support distributed computation via DistRDF (see documentation here).
Cheers,
J.