1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
5. Argonne National Lab. (ANL), Argonne, IL (United States)
6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
7. Brookhaven National Lab. (BNL), Upton, NY (United States)
8. Stanford Univ., Stanford, CA (United States)
9. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
10. Univ. of Utah, Salt Lake City, UT (United States)
11. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
12. Illinois Inst. of Technology, Chicago, IL (United States)
13. Tactical Computing Laboratories, TX (United States)
14. Univ. of Southern California, Los Angeles, CA (United States)
15. Rice Univ., Houston, TX (United States)
16. Univ. of Arizona, Tucson, AZ (United States)