Chill, it's only two computers. My supervisor knows and she's totally cool with it qualifying as "personal use". Nothing unethical there. Running BOINC on a supercomputing cluster of 10000 cores without permission...well...that's pretty far into the unethical regime, and no way I would do that. (Although, if someone is going to be unethical to that extreme ... at least it's in a "robinhood-esque" way, rather than flat-out stealing cash and spending it on coke and hookers, haha.)
Added note: I apologize if I was too cavalier. I care a lot about ethical practices within the crypto mining space and especially Gridcoin (I want Gridcoin to have a good public image). I encourage other miners to take ethics seriously as well, without necessarily taking a black-and-white "puritan" point of view.