Kinetic turbulence simulations at extreme scale on leadership-class systems

Bei Wang, Stephane Ethier, William Tang, Timothy Williams, Khaled Z. Ibrahim, Kamesh Madduri, Samuel Williams, Leonid Oliker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Scopus citations

Abstract

Reliable predictive simulation capability addressing confinement properties in magnetically confined fusion plasmas is critically-important for ITER, a 20 billion dollar international burning plasma device under construction in France. The complex study of kinetic turbulence, which can severely limit the energy confinement and impact the economic viability of fusion systems, requires simulations at extreme scale for such an unprecedented device size. Our newly optimized, global, ab initio particle-in-cell code solving the nonlinear equations underlying gyrokinetic theory achieves excellent performance with respect to "time to solution" at the full capacity of the IBM Blue Gene/Q on 786,432 cores of Mira at ALCF and recently of the 1,572,864 cores of Sequoia at LLNL. Recent multithreading and domain decomposition optimizations in the new GTC-P code represent critically important software advances for modern, low memory per core systems by enabling routine simulations at unprecedented size (130 million grid points ITER-scale) and resolution (65 billion particles).

Original languageEnglish (US)
Title of host publicationProceedings of SC 2013
Subtitle of host publicationThe International Conference for High Performance Computing, Networking, Storage and Analysis
PublisherIEEE Computer Society
ISBN (Print)9781450323789
DOIs
StatePublished - Jan 1 2013
Event2013 International Conference for High Performance Computing, Networking, Storage and Analysis, SC 2013 - Denver, CO, United States
Duration: Nov 17 2013Nov 22 2013

Publication series

NameInternational Conference for High Performance Computing, Networking, Storage and Analysis, SC
ISSN (Print)2167-4329
ISSN (Electronic)2167-4337

Other

Other2013 International Conference for High Performance Computing, Networking, Storage and Analysis, SC 2013
CountryUnited States
CityDenver, CO
Period11/17/1311/22/13

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All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Computer Science Applications
  • Hardware and Architecture
  • Software

Cite this

Wang, B., Ethier, S., Tang, W., Williams, T., Ibrahim, K. Z., Madduri, K., Williams, S., & Oliker, L. (2013). Kinetic turbulence simulations at extreme scale on leadership-class systems. In Proceedings of SC 2013: The International Conference for High Performance Computing, Networking, Storage and Analysis [82] (International Conference for High Performance Computing, Networking, Storage and Analysis, SC). IEEE Computer Society. https://doi.org/10.1145/2503210.2503258