ACKNOWLEDGEMENTS. Thanks to Harry Castle, Krzysztof Czaja, Mark Danks, Christian Feldbauer, Guenter Geiger, Kerry Hagan, Trevor Johnson, Fernando Lopez-Lezcano, Adam Lindsay, Karl MacMillan, Thomas Musil, Toshinori Ohkouchi, Winfried Ritsch, Vibeke Sorensen, Rand Steiger, Hans-Christoph Steiner, Shahrokh Yadegari, David Zicarelli, Iohannes Zmoelnig, and probably many others for contributions of code, documentation, ideas, and expertise. This work has received generous support from the Intel Research Council.