If I'm reading you right and extending your example more concretely, you're doing IoT SIMD parallelization, right?
So rather than 1M soil moisture sensors continuously sending records to a central repo, you're giving the mesh network something exciting to do by distributing "select * from db where moisture<200" or whatever then collating all the responses, if any...
There's a classic crypto thought experiment illustrating SIMD for cracking keys where the Chinese distribute 100M boom boxes (well, its an old thought experiment) and they randomly test keys and when the red light turns on indicating factor found, the owner of the radio turns it in for a substantial reward. And thats how SIMD key cracking gets a 27 bit parallelism speedup over one box. In the IoT era I assume its going to be a normal thing for lightbulbs and toasters to get powned to mine bitcoins and the like.
You could probably extend both the real story and the old crypto thought experiment to help provide some docs. Then again I read your unit tests and they kind of document the system pretty well. Nice tests.
In true supercomputer fashion, by going SIMD you've taken a formerly CPU bound problem, and turned it into an IO bound problem, but for little microcontrollers not classic supercomputer hardware, which I thought was pretty funny.