Performance aspects of collocated and staggered grids for particle-in-cell plasma simulation
Paper i proceeding, 2017

We present a computational comparison of collocated and staggered uniform grids for particle-in-cell plasma simulation. Both types of grids are widely used, and numerical properties of the corresponding solvers are well-studied. However, for large-scale simulations performance is also an important factor, which is the focus of this paper. We start with a baseline implementation, apply widely-used techniques for performance optimization and measure their efficacy for both grids on a high-end Xeon CPU and a second-generation Xeon Phi processor. For the optimized version the collocated grid outperforms the staggered one by about 1.5x on both Xeon and Xeon Phi. The speedup on the Xeon Phi processor compared to Xeon is about 1.9x.

Xeon Phi

Particle-in-cell

Performance optimization

Plasma simulation

SIMD

Författare

S. Bastrakov

Lobachevsky University

I. Surmin

Lobachevsky University

E. Efimenko

Lobachevsky University

Russian Academy of Sciences

Arkady Gonoskov

Chalmers, Fysik, Teoretisk fysik

I. Meyerov

Lobachevsky University

Lecture Notes in Computer Science

0302-9743 (ISSN)

Vol. 10421 94-100

Ämneskategorier

Energiteknik

DOI

10.1007/978-3-319-62932-2_8

ISBN

978-3-319-62931-5

Mer information

Skapat

2017-10-07