Wednesday 09 May 2018[Seminar] High-order schemes: prospects for more accurate and scalable codes for computational astrophysics

Thomas Guillet - University Paris-Saclay

Physics 4th Floor 11:30-12:30

Astrophysical simulations require the accurate modeling of an
ever-expanding array of physical processes, across many scales, and
with increasing performance and scalability. Among numerical methods
which can help address this challenge, high-order discontinuous
Galerkin (DG) schemes appear as particularly promising contenders. In
this talk, I will present results based on an implementation of a
discontinuous Galerkin solver for magnetohydrodynamics with adaptive
mesh refinement, developed within the AREPO cosmological fluid
dynamics code. I will show some of the benefits of higher-order DG
schemes for astrophysical applications, and will present the
performance and scalability implications of the method for modern
computing architectures. Finally, I will discuss prospects and
challenges for DG implementations to become robust and efficient tools
that can be applied to full-scale astrophysical problems.

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