1. Department of Physics and Space Science Center, University of New Hampshire, Durham, New Hampshire 03824, USA
2. Department of Computer Science, The University of Chicago, Chicago, Illinois 60637, USA
3. Computational Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
4. Max Planck Computing and Data Facility, 85748 Garching, Germany
5. NVIDIA GmbH, 52146 Würselen, Germany
6. Oden Institute for Computational Engineering and Sciences, The University of Texas at Austin, Austin, Texas 78712, USA
7. Theory Department, Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA
8. Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
9. Max Planck Institute for Plasma Physics, 85748 Garching, Germany