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DTSTART:19700308T020000
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DTSTAMP:20190719T085744Z
LOCATION:HG EO Nord
DTSTART;TZID=Europe/Stockholm:20190613T195000
DTEND;TZID=Europe/Stockholm:20190613T215000
UID:submissions.pasc-conference.org_PASC19_sess179_post133@linklings.com
SUMMARY:PHY06 - Spectral Methods for Multi-Scale Plasma Physics Modeling a
 t Exascale
DESCRIPTION:Poster\n\n\nPHY06 - Spectral Methods for Multi-Scale Plasma Ph
 ysics Modeling at Exascale\n\nMarkidis, Delzanno, Koshkarov, Roytershteyn\
 n\nSpectral methods have recently emerged as a promising technique to mode
 l the multi-scale nature of magnetized plasmas. This is due to the so-call
 ed fluid-kinetic coupling, i.e. the ability to capture the large-scale (ma
 croscopic) behavior of the plasma with a few terms of the spectral expansi
 on, while the small-scale (microscopic) physics can be handled by addition
 al terms. The spectral basis can be adapted in space and time in the compu
 tational domain. Thus, spectral methods might offer an optimal way to perf
 orm large-scale simulations that include microscopic physics accurately. I
 n this work, we present a recently-developed spectral code, the SpectralPl
 asmaSolver (SPS). SPS is based on a Hermite decomposition of the plasma ph
 ase-space density, a discontinuous-Galerkin discretization in space and fu
 lly-implicit discretization in time. SPS is fully parallelized for distrib
 uted-memory machines. An overview of the code will be presented, focusing 
 on studies of code performance and its optimization in terms of resource u
 sage, I/O operations, and the steps undertaken to ready the code for exasc
 ale computing.
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