Gyrokinetic particle simulation model
Journal of Computational Physics
An Eulerian gyrokinetic-Maxwell solver
Journal of Computational Physics
Journal of Computational Physics
Leading Computational Methods on Scalar and Vector HEC Platforms
SC '05 Proceedings of the 2005 ACM/IEEE conference on Supercomputing
Optimizing task layout on the Blue Gene/L supercomputer
IBM Journal of Research and Development
Memory-efficient optimization of Gyrokinetic particle-to-grid interpolation for multicore processors
Proceedings of the Conference on High Performance Computing Networking, Storage and Analysis
Overlapping communication with computation using OpenMP tasks on the GTS magnetic fusion code
Scientific Programming - Exploring Languages for Expressing Medium to Massive On-Chip Parallelism
Gyrokinetic toroidal simulations on leading multi- and manycore HPC systems
Proceedings of 2011 International Conference for High Performance Computing, Networking, Storage and Analysis
Proceedings of 2011 International Conference for High Performance Computing, Networking, Storage and Analysis
Advancing application process affinity experimentation: open MPI's LAMA-based affinity interface
Proceedings of the 20th European MPI Users' Group Meeting
Kinetic turbulence simulations at extreme scale on leadership-class systems
SC '13 Proceedings of the International Conference on High Performance Computing, Networking, Storage and Analysis
ANCS '13 Proceedings of the ninth ACM/IEEE symposium on Architectures for networking and communications systems
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As the global energy economy makes the transition from fossil fuels toward cleaner alternatives, nuclear fusion becomes an attractive potential solution for satisfying growing needs. Fusion, the power source of the stars, has been the focus of active research since the early, 1950s. While progress has been impressive--especially for magnetically confined plasma devices called tokamaks--the design of a practical power plant remains an outstanding challenge. A key topic of current interest is microturbulence, which is believed to be responsible for the unacceptably large leakage of energy and particles out of the hot plasma core. Understanding and controlling this process is of utmost importance for operating current devices and designing future ones. In addressing such issues, the Gyrokinetic Toroidal Code (GTC) was developed to study the global influence of microturbulence on particle and energy confinement. It has been optimized on the IBM Blue Gene/L™ (BG/L) computer, achieving essentially linear scaling on more than 30,000 processors. A full simulation of unprecedented phase-space resolution was carried out with 32,768 processors on the BG/L supercomputer located at the IBM T. J. Watson Research Center, providing new insights on the influence of collisions on microturbulence.