Parmap is a minimalistic library for exploiting multicore architectures
in OCaml programs with minimal modifications: if you want to use your
many cores to accelerate an operation which happens to be a map, fold or
map/fold (map-reduce), just use Parmap's parmap, parfold and parmapfold
primitives in place of the standard List.map and friends, and specify
the number of subprocesses to use with the optional parameter ~ncores.