Code developed as a part of this project is NEC Labs proprietary. We can release the source code "as is" for research purposes under a mutually agreed legal binding. If you are interested, please send a mail to ravik@nec-labs.com

Alternately, you can get an open implementation of Harp from the following site: http://www.cs.utexas.edu/~zfz/hir/, thanks to Mi kyung Han, Zifei Zhong, Mukesh Kumar and Mike Dahlin from the University of Texas at Austin.