Preprints
https://doi.org/10.5194/egusphere-2024-2588
https://doi.org/10.5194/egusphere-2024-2588
05 Sep 2024
 | 05 Sep 2024

SERGHEI v2.0: introducing a performance-portable, high-performance three-dimensional variably-saturated subsurface flow solver (SERGHEI-RE)

Zhi Li, Gregor Rickert, Na Zheng, Zhibo Zhang, Ilhan Özgen-Xian, and Daniel Caviedes-Voullième

Abstract. Advances in high-performance parallel computing have significantly enhanced the speed of large-scale hydrological simulations. However, the diversity and rapid evolution of available computational systems and hardware devices limit model flexibility and increase code maintenance efforts. This paper introduces SERGHEI-RE, a three-dimensional, variably saturated subsurface flow simulator within the SERGHEI model framework. SERGHEI-RE adopts the Kokkos-based portable parallelization framework of SERGHEI, which facilitates scalability and ensures performance portability on various computational devices. Moreover, SERGHEI-RE provides options to solve the Richards Equation with iterative or non-iterative numerical schemes, enhancing model flexibility under complex hydrogeological conditions. The solution accuracy of SERGHEI-RE is validated using a series of benchmark tests, ranging from simple infiltration problems to practical hydrological, geotechnical and agricultural applications. The scalability and performance portability of SERGHEI-RE are demonstrated on a desktop workstation, as well as on multi-CPU and multi-GPU clusters, indicating that SERGHEI-RE is an efficient, scalable and performance portable tool for large-scale subsurface flow simulations.

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Journal article(s) based on this preprint

31 Jan 2025
SERGHEI v2.0: introducing a performance-portable, high-performance, three-dimensional variably saturated subsurface flow solver (SERGHEI-RE)
Zhi Li, Gregor Rickert, Na Zheng, Zhibo Zhang, Ilhan Özgen-Xian, and Daniel Caviedes-Voullième
Geosci. Model Dev., 18, 547–562, https://doi.org/10.5194/gmd-18-547-2025,https://doi.org/10.5194/gmd-18-547-2025, 2025
Short summary
Zhi Li, Gregor Rickert, Na Zheng, Zhibo Zhang, Ilhan Özgen-Xian, and Daniel Caviedes-Voullième

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-2588', Anonymous Referee #1, 01 Oct 2024
    • AC1: 'Reply on RC1', Zhi Li, 23 Oct 2024
      • RC2: 'Reply on AC1', Anonymous Referee #1, 31 Oct 2024
  • RC3: 'Comment on egusphere-2024-2588', Anonymous Referee #2, 01 Dec 2024
    • AC2: 'Reply on RC3', Zhi Li, 02 Dec 2024

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-2588', Anonymous Referee #1, 01 Oct 2024
    • AC1: 'Reply on RC1', Zhi Li, 23 Oct 2024
      • RC2: 'Reply on AC1', Anonymous Referee #1, 31 Oct 2024
  • RC3: 'Comment on egusphere-2024-2588', Anonymous Referee #2, 01 Dec 2024
    • AC2: 'Reply on RC3', Zhi Li, 02 Dec 2024

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Zhi Li on behalf of the Authors (02 Dec 2024)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (04 Dec 2024) by Charles Onyutha
AR by Zhi Li on behalf of the Authors (10 Dec 2024)

Journal article(s) based on this preprint

31 Jan 2025
SERGHEI v2.0: introducing a performance-portable, high-performance, three-dimensional variably saturated subsurface flow solver (SERGHEI-RE)
Zhi Li, Gregor Rickert, Na Zheng, Zhibo Zhang, Ilhan Özgen-Xian, and Daniel Caviedes-Voullième
Geosci. Model Dev., 18, 547–562, https://doi.org/10.5194/gmd-18-547-2025,https://doi.org/10.5194/gmd-18-547-2025, 2025
Short summary
Zhi Li, Gregor Rickert, Na Zheng, Zhibo Zhang, Ilhan Özgen-Xian, and Daniel Caviedes-Voullième
Zhi Li, Gregor Rickert, Na Zheng, Zhibo Zhang, Ilhan Özgen-Xian, and Daniel Caviedes-Voullième

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Short summary
We introduce SERGHEI-RE, a 3D subsurface flow simulator with performance-portable parallel computing capabilities. SERGHEI-RE performs effectively on various computational devices, from personal computers to advanced clusters. It allows users to solve flow equations with multiple numerical schemes, making it adaptable to various hydrological scenarios. Testing results show its accuracy and performance, confirming that SERGHEI-RE is a powerful tool for hydrological research.