Setting aside for a moment the wisdom of using thousands of cores to enable object oriented programming (which I'm dubious of), it seems to me that the way modern processors handle communication and synchronization is mostly a historical accident, and we could probably do a lot better than just letting processes share memory willy-nilly and having the processor cache sort it out. Like maybe we could give each core a set of registers dedicated explicitly for communicating with its neighbors, bypassing the memory hierarchy entirely for small messages.
