Preprints
https://doi.org/10.5194/egusphere-2022-35
https://doi.org/10.5194/egusphere-2022-35
04 Apr 2022
 | 04 Apr 2022

Block-structured, equal workload, multigrid nesting interface for Boussinesq wave model FUNWAVE-TVD

Young-Kwang Choi, Fengyan Shi, Matt Malej, Jane M. Smith, James T. Kirby, and Stephan Grilli

Abstract. We describe the development of a block-structured, equal CPU-load, multigrid nesting interface for the Boussinesq wave model FUNWAVE-TVD. The new model framework does not interfere with the core solver, and thus the core program, FUNWAVE-TVD, is still a stand-alone model used for a single grid. The nesting interface manages the time sequencing and two-way nesting processes between the parent grid and child grid with grid refinement in a hierarchical manner. Workload balance in the MPI-based parallelization is handled by an equal-load scheme. A strategy of shared array allocation is applied for data management, that allows a large number of nested grids without creating additional memory allocations. Four model tests are conducted to verify the nesting algorithm, model accuracy, wetting-drying treatment, and the robustness in the application to modeling transoceanic tsunamis and coastal effects.

Journal article(s) based on this preprint

18 Jul 2022
Block-structured, equal-workload, multi-grid-nesting interface for the Boussinesq wave model FUNWAVE-TVD (Total Variation Diminishing)
Young-Kwang Choi, Fengyan Shi, Matt Malej, Jane M. Smith, James T. Kirby, and Stephan T. Grilli
Geosci. Model Dev., 15, 5441–5459, https://doi.org/10.5194/gmd-15-5441-2022,https://doi.org/10.5194/gmd-15-5441-2022, 2022
Short summary

Young-Kwang Choi et al.

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-35', Anonymous Referee #1, 10 Apr 2022
    • AC1: 'Reply on RC1', Fengyan Shi Shi, 06 May 2022
  • RC2: 'Comment on egusphere-2022-35', Anonymous Referee #2, 06 May 2022
    • AC2: 'Reply on RC2', Fengyan Shi Shi, 21 May 2022

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-35', Anonymous Referee #1, 10 Apr 2022
    • AC1: 'Reply on RC1', Fengyan Shi Shi, 06 May 2022
  • RC2: 'Comment on egusphere-2022-35', Anonymous Referee #2, 06 May 2022
    • AC2: 'Reply on RC2', Fengyan Shi Shi, 21 May 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Fengyan Shi Shi on behalf of the Authors (31 May 2022)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (09 Jun 2022) by Simone Marras
RR by Anonymous Referee #1 (23 Jun 2022)
ED: Publish as is (23 Jun 2022) by Simone Marras
AR by Fengyan Shi Shi on behalf of the Authors (27 Jun 2022)  Manuscript 

Journal article(s) based on this preprint

18 Jul 2022
Block-structured, equal-workload, multi-grid-nesting interface for the Boussinesq wave model FUNWAVE-TVD (Total Variation Diminishing)
Young-Kwang Choi, Fengyan Shi, Matt Malej, Jane M. Smith, James T. Kirby, and Stephan T. Grilli
Geosci. Model Dev., 15, 5441–5459, https://doi.org/10.5194/gmd-15-5441-2022,https://doi.org/10.5194/gmd-15-5441-2022, 2022
Short summary

Young-Kwang Choi et al.

Young-Kwang Choi et al.

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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

Short summary
The multiple-grid nesting technique is an important methodology used for modeling transoceanic tsunamis and coastal effects. In this study, we developed a two-way nesting interface in a multigrid nesting system for the Boussinesq wave model, FUNWAVE-TVD. Some strategies in workload balance, data management, and parent-child communications in the MPI-based parallelization system are utilized to guarantee the model efficiency and accuracy. Four model tests are carried out in the paper.