Roughly this. Part of it is performance fetish. Part of it is one architecture for every purpose. I can’t tell you how many times I’ve seen people run embarrass

Roughly this. Part of it is performance fetish. Part of it is one architecture for every purpose. I can’t tell you how many times I’ve seen people run embarrassingly parallel jobs coordinated by MPI on a Cray - because somebody spent all that money on that machine. Don’t forget about Bell prize outages.