At first I thought this was a a way to run a Beowulf cluster... that brought back memories (is Beowulf still relevant in 2020?)
I forgot Devuan is the fork of Debian with Systemd stripped out.
I forgot Devuan is the fork of Debian with Systemd stripped out.
Well, it is. Install and configure Open MPI or MPICH on multiple connected Devuan Beowulf systems and you have a Beowulf cluster. As a bonus, your new Beowulf cluster is systemd free.
Not really a bonus in my book, but I am sure it is for some folks.