Summary: {\tt BSMLlib} is a functional data-parallel library for programming bulk-ynchronous parallel (BSP) algorithms in Objective CAML. This article demonstrates the expressivity of {\tt BIMLlib} operations on elementary algorithms. Other operations, on a type of parallel sets, illustrate how BSP exchange phases are written as small, simple programs. A longer example, inspired by parallel join algorithms for relational databases, demonstrates the advantage of using {\tt BSMLlib}’s explicit processes for dynamic load balancing. Finally, suggestions are made for extending the library and building a complete BSML language with the same operations.