LISFLOOD-FP 8.0: the new discontinuous Galerkin shallow-water solver for multi-core CPUs and GPUs

Shaw, James; Kesserwani, Georges; Neal, Jeffrey; Bates, Paul; Sharifian, Mohammad Kazem

doi:https://doi.org/10.5194/gmd-14-3577-2021

Articles | Volume 14, issue 6

https://doi.org/10.5194/gmd-14-3577-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-14-3577-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 6

Development and technical paper

|

11 Jun 2021

Development and technical paper |

| 11 Jun 2021

LISFLOOD-FP 8.0: the new discontinuous Galerkin shallow-water solver for multi-core CPUs and GPUs

James Shaw, Georges Kesserwani, Jeffrey Neal, Paul Bates, and Mohammad Kazem Sharifian

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Final revised paper (published on 11 Jun 2021)
Preprint (discussion started on 30 Oct 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review of manuscript gmd-2020-340', Anonymous Referee #1, 17 Nov 2020
- AC1: 'Reply on RC1', James Shaw, 04 Apr 2021
RC2: 'Review', Anonymous Referee #2, 22 Dec 2020
- AC2: 'Reply on RC2', James Shaw, 04 Apr 2021

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by James Shaw on behalf of the Authors (04 Apr 2021) Author's response Author's tracked changes Manuscript

ED: Reconsider after major revisions (21 Apr 2021) by Bethanna Jackson

ED: Referee Nomination & Report Request started (25 Apr 2021) by Bethanna Jackson

RR by Anonymous Referee #1 (04 May 2021)

ED: Publish as is (05 May 2021) by Bethanna Jackson

Short summary

LISFLOOD-FP has been extended with new shallow-water solvers – DG2 and FV1 – for modelling all types of slow- or fast-moving waves over any smooth or rough surface. Using GPU parallelisation, FV1 is faster than the simpler ACC solver on grids with millions of elements. The DG2 solver is notably effective on coarse grids where river channels are hard to capture, improving predicted river levels and flood water depths. This marks a new step towards real-world DG2 flood inundation modelling.