This code started as a two day exercise done at Irill in July 2011, by Marco Danelutto and Roberto Di Cosmo , that produced the architecture now contained in simplemapper. It has evolved significantly after, and it now contains a particularly efficient version of the map code on float arrays, incorporating ideas from Paul Vernaza , and that works thanks to smart code and significant insight from Jerome Vouillon . Pietro Abate provided autoconf and ocamlbuild support. Detailed contributor history is contained in the git repository available at https://github.com/rdicosmo/parmap