I was wondering the same thing. Clearly Google et al has some success with parallel computation without giving up determinism.
Thinking about how the cloud model (collaborating services via RPC) maps to a single machine -- I guess that looks like a actor / message passing model where each process gets its own core or something.
Plenty of programming languages make this sort of thing straightforward -- (I'm most familiar with Go, where it is absolutely trivial).
To me, it looks like the industry is actually very well poised to handle to multi-core onslaught, without requiring some kind of fundamental rethink like nondeterminism.