Parallel lets you run Stata faster, sometimes faster than MP itself. By organizing your job in several Stata instances, parallel allows you to work with out-of-the-box parallel computing. Using the 'parallel' prefix, you can get faster simulations, bootstrapping, reshaping big data, etc., without having to know a thing about parallel computing. With no need of having Stata/MP installed on your computer, parallel has showed to dramatically speed up computations up to two, four, or more times depending on how many processors your computer has.
This talk was done by my coauthor Brian Quistorff.