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ExaHyPE

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Code name ExaHyPE
Developer(s)

Leonhard Rannabauer (TUM), Philipp Samfaß (TUM), Jean-Matthieu Gallard (TUM), Tobias Weinzierl (Durham University) and Anne Reinarz (Durham University)

Contact person: Michael Bader

Link

https://www.exahype.org/

Short description

The ExaHyPE engine numerically solves systems of hyperbolic PDEs, as stemming from conservation laws. A concrete model for seismic wave propagation problems is being developed within the ExaHyPE project. The model is based on high-order Discontinuous Galerkin (DG) discretization, local time-stepping and works on tree-structured Cartesian meshes. The activities in this CoE will focus on setting up concrete services based on the ExaHyPE engine and seismic models.

Original code level

2

Current code level

2

Pilot(s) involved

PD1, PD4, PD5

Co-design

Co-design activities: 

Optimisation of backends for small tensor and matrix operations on various CPU architectures (Intel, AMD, ARM)

Main results and References

Modeling improvements:

  • Automatic curvilinear mesh generation for domains with complicated topography

  • Implementation of UQ-based scenarios for seismic hazard assessment

Performance results

Algorithmic and HPC improvements:

  • Improved vectorization due to algorithmic modification of the ADER-DG scheme and change of memory layout (“Array of Struct of Array”)

  • Reactive load balancing via task offloading and experiments with team-based resilience

The ChEESE project has received funding from the European Union’s Horizon 2020
research and innovation programme under the grant agreement Nº 823844. All rights reserved. Legal Notice.
© CHEESE-COE.EU COPYRIGHT 2018 - 2019
  • About
    • Objectives
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