Parallel computing of three-dimensional discontinuous deformation analysis based on OpenMP

Xinyan Peng, Guangqi Chen, Pengcheng Yu, Yingbin Zhang, Longxiao Guo, Cungen Wang, Xiao Cheng, Hui Niu

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)


The computing efficiency of three-dimensional discontinuous deformation analysis (3D-DDA) needs to be improved for large-scale simulations. Among all the subroutines of 3D-DDA, the equation solver is very time-consuming. To accelerate the equation-solving process, this paper proposes implementing the parallel block Jacobi (BJ) and preconditioned conjugate gradient (PCG) iterative solvers into the original 3D-DDA based on OpenMP. The calculation accuracy and computational efficiency are studied by several numerical examples, demonstrating that the modified 3D-DDA with parallel BJ or PCG solver exhibits much higher execution efficiency with satisfactory correctness. The maximum speedup ratio is up to 5.1 for the cases studied.

Original languageEnglish
Pages (from-to)304-313
Number of pages10
JournalComputers and Geotechnics
Publication statusPublished - Feb 2019

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Computer Science Applications


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