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Symplectic Structure-Preserving Particle-in-Cell Whole-Volume Simulation of Tokamak Plasmas to 111.3 Trillion Particles and 25.7 Billion Grids
Event Type
ACM Gordon Bell Finalist
Awards Presentation
Tags
Accelerator-based Architectures
Applications
Computational Science
Extreme Scale Comptuing
Green Computing
Performance
Scientific Computing
Registration Categories
TP
TimeTuesday, 16 November 20214:30pm - 5pm CST
Location240-241-242
DescriptionWe employ our recently developed explicit second order charge-conservative symplectic electromagnetic particle in-cell (PIC) scheme in the cylindrical mesh to simulate the whole-volume magnetic confinement toroidal plasmas on the new Sunway supercomputer. From a large-scale simulation of magnetized toroidal plasma with 111.3 trillion particles and 25.7 billion grids, we have obtained a sustained performance exceeding 201.1 PFLOP/s (double precision) with the fastest iteration step achieving 298.2 PFLOP/s (double precision). For the first time, unprecedented high resolution evolution of 6D electromagnetic fully kinetic plasmas based on 2D equilibrium profiles from Experimental Advanced Superconducting Tokamak (EAST) and designed operation state of China Fusion Engineering Test Reactor (CFETR) are presented, and edge micro-instabilities can be investigated directly. This shows the possibility to study crucial problems and phenomena in the magnetic confinement toroidal plasma directly using the symplectic electromagnetic fully kinetic PIC method on world’s leading supercomputers.
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