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DTSTART:19700308T020000
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DTSTAMP:20220812T074335Z
LOCATION:Darwin Room
DTSTART;TZID=Europe/Stockholm:20220628T173000
DTEND;TZID=Europe/Stockholm:20220628T180000
UID:submissions.pasc-conference.org_PASC22_sess151_msa114@linklings.com
SUMMARY:Six-Dimensional Semi-Lagrangian Kinetic Plasma Simulation on the G
 PU Based JUWELS Booster
DESCRIPTION:Minisymposium\n\nSix-Dimensional Semi-Lagrangian Kinetic Plasm
 a Simulation on the GPU Based JUWELS Booster\n\nEinkemmer, Moriggl\n\nPerf
 orming kinetic plasma physics simulations using grid-based solvers is very
  demanding both in terms of memory as well as computational cost. This is 
 primarily due to the up to six-dimensional phase space and the associated 
 unfavorable scaling of the computational cost as a function of grid spacin
 g (often termed the curse of dimensionality). In this paper, we present 4d
 , 5d, and 6d simulations of the Vlasov-Poisson equation with a split-step 
 semi-Lagrangian discontinuous Galerkin scheme on graphic processing units 
 (GPUs). The local communication pattern of this method allows an efficient
  implementation on large-scale GPU-based systems and emphasizes the import
 ance of considering algorithmic and high-performance computing aspects in 
 unison. We demonstrate a single node performance above 2 TB/s effective me
 mory bandwidth (on a node with 4 A100 GPUs) and show excellent scaling (pa
 rallel efficiency between 30% and 67%) for up to 1536 A100 GPUs on JUWELS 
 Booster.\n\nDomain: Computer Science and Applied Mathematics, Physics
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