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L-HySEA (Landslide-HySEA)

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Code name L-HySEA (Landslide-HySEA)
Developer(s)

Manuel J. Castro Díaz

Jorge Macías Sánchez

Marc de la Asunción

Contact person: Jorge Macías Sánchez

Link

https://edanya.uma.es/hysea/

Short description

L-HySEA solves the 2D shallow water equations on hydrostatic and dispersive versions. L-HySEA is based on a high-order Finite Volume (FV) discretization (hydrostatic) with Finite Differences (FD) for the dispersive version on two-way structured nested meshes in spherical coordinates. Initial conditions from the Okada model or initial deformation, synchronous and asynchronous multi-Okada, rectangular and triangular faults.

Original code level

3

Pilot(s) involved

PD2, PD7, PD8

Main results and References

MAIN RESULTS:

  • Code Audit driven improvements.

  • Better load balancing.

  • Resuming a stored simulation.

  • Asynchronous NetCDF file writing.

  • Asynchronous CPU-GPU memory transfers.

  • Added compression of the NetCDF output files.

  • Support for bigger meshes by using int64_t datatype

REFERENCES:

Macías, J., Vázquez, J.T., Fernández-Salas, L.M., González-Vida, J.M., Bárcenas, P., Castro, M.J., Díaz del Río, V., and Alonso, B. (2015). The Al-Boraní submarine landslide and associated tsunami. A modelling approach. Marine Geology, 361:79-95. [doi:10.1016/j.margeo.2014.12.006].

González-Vida, J.M., Macías, J., Castro, M.J., Sánchez-Linares, C., de la Asunción, M., Ortega, S., and Arcas, D. (2019).  The Lituya Bay landslide-generated mega-tsunami. Numerical simulation and sensitivity analysis,  Natural Hazards and Earth System Science, 19, 369-388 [doi: 10.5194/nhess-19-369-2019].

Performance results
  • Strong scaling reaches 50 % efficiency with 32 GPUs using asynchronous memory transfers.

  • Asynchronous file writing reduces the runtimes up to 50 % for high frequency saving.

L-HySEA
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
    • Workplan
    • Partners & Coordinator
    • Collaborators
  • Publications
  • Results
    • Pilot Demonstrators
    • Flagship codes
    • Repository
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    • KPIs
  • Events
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    • Dissemination
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