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Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation
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Accelerating groundwater flow simulation in MODFLOW using JASMIN-based parallel computing.

Tangpei Cheng1, Zeyao Mo, Jingli Shao

  • 1Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China.; High Performance Computing Center, Institute of Applied Physics and Computational Mathematics, Beijing 100094, China.

Ground Water
|April 23, 2013
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Summary
This summary is machine-generated.

This study developed an efficient parallel groundwater flow simulator by rebuilding MODFLOW on JASMIN. The new simulator significantly accelerates simulations, achieving up to nine times faster performance on parallel processors.

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Area of Science:

  • Hydrogeology
  • Computational Science
  • Parallel Computing

Background:

  • Groundwater flow simulations are crucial for resource management but can be computationally intensive.
  • Existing software like MODFLOW, while widely used, faces limitations in parallel processing efficiency.

Purpose of the Study:

  • To accelerate groundwater flow simulations by developing an efficient parallel simulator.
  • To enhance the performance of the MODFLOW software by rebuilding it on the JASMIN infrastructure.

Main Methods:

  • Rebuilding MODFLOW on JASMIN using patch-based data structures and parallel algorithms.
  • Implementing optimizations such as tagging constant-head/inactive cells and employing load balancing.
  • Utilizing ghost nodes to reduce communication costs during parallel processing.

Main Results:

  • Demonstrated significant performance enhancements in field flow and heterogeneous aquifer simulations.
  • Achieved up to six times speedup compared to MICCG-based MODFLOW and nine times speedup compared to GMG-based MODFLOW.
  • Showcased impressive scalability with parallel efficiencies of 77% and 68% on 512 and 1024 cores, respectively.

Conclusions:

  • The developed parallel simulator offers substantial improvements in speed and efficiency for groundwater flow modeling.
  • The optimized MODFLOW on JASMIN provides a scalable and accurate solution for large-scale hydrogeological simulations.