&gt;If for some reason supercomputer builders could no longer use the best GPUs in supercomputers, would they stick with Linux or would they follow the hardware and switch to a ⋆BSD on the compute nodes?<p>I have no idea what the answer would be, but my guess is it would hinge on 1) AMDs reaction, and the performance hit (if any) of switching to AMD GPUs on Linux and 2) the performance hit (if any) of switching the OS to *BSD