SANDIA REPORT SAND2009-2287 Unlimited Release PrintedApril 2009 Parallel Phase Model: A Programming Model for High-end Parallel Machines with Manycores Ron Brightwell, Mike Heroux Sandia National Labs Albuquerque, NM 87185 Email:{rbbrigh, maherou}@sandia.gov Zhaofang Wen (supported by NSF grant 0833147) Sandia National Labs Albuquerque, NM 87185 Email:zwen@sandia.gov Junfeng Wu (supported by NSF grant 0833152) Syracuse University Syracuse, NY 13244-1150 Email:juwu@syr.edu Prepared by Sandia National Laboratories Albuquerque, New Mexico 87185 and Livermore, California 94550 Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy’s National Nuclear Security Administration under Contract DE-AC04-94-AL85000. Approved for public release; further dissemination unlimited.