Hi, 

I'm starting to dip into Parallel Processing with Haskell while reading "Parallel and Concurrent Programming in Haskell". 

All the Examples in the Book construct a program which is doing all the work, so with all files in the same program which has a main method. 

I'd like to have a library which utilized parallel programming (mostly for map-reduce tasks). 

Is this possible? 

My first approach of putting the par-code in my library and running the program threaded does not seem to use multiple cores. 

Also I have not seen any parallel programming in "popular" libraries (such as QuickCheck) which makes me think that I'm on the wrong path. 

To summarize my goal: 

I want to build a computation-intensive library, which utilizes multiple cores when used from an executable. 

Thank you 

Leonhard