Turns out the Data Community DC is hosting a workshop on that very topic.
For context: I have learned theses things in the last year or so:
- Many operations are embarrassingly parallel.
- Some operations have to be performed in sequence; R does not do so well here. Proceed with your "for loop" with caution. (Though sometimes it's just fine, situation dictates.)
- The best way to address (2) is with some good old fashioned C, C++, or Fortran. ("I was coding in Fortran before it was cool." *Throws down latte, puts on Ray Bans, takes Macbook out of cafe*)