Parallelize with foreach
You need to do at least two things:
%dopar%. Basically, always use
%dopar%because you can use
registerDoSEQ()is you really want to run the
register a parallel backend using one of the packages that begin with do (such as
doMPIand more). I will list only the two main parallel backends because there are too many of them.
Check it out. Florian spends a lot of time with foreach and doParallel, a little bit of time with flock, and mentions Microsoft R Open. H/T R-Bloggers