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- Title
A Comparative Study on Different Parallel Solvers for Nonlinear Analysis of Complex Structures.
- Authors
Lei Zhang; Guoxin Zhang; Lixiang Wang; Zhaosong Ma; Shihai Li
- Abstract
The parallelization of 2D/3D software SAPTIS is discussed for nonlinear analysis of complex structures. A comparative study is made on different parallel solvers. The numerical models are presented, including hydrationmodels, water coolingmodels, modulus models, creep model, and autogenous deformation models. A finite element simulation ismade for the whole process of excavation and pouring of dams using these models. The numerical results show a good agreement with the measured ones. To achieve a better computing efficiency, four parallel solvers utilizing parallelization techniques are employed: (1) a parallel preconditioned conjugate gradient (PCG) solver based on OpenMP, (2) a parallel preconditioned Krylov subspace solver based on MPI, (3) a parallel sparse equation solver based on OpenMP, and (4) a parallel GPU equation solver. The parallel solvers run either in a shared memory environment OpenMP or in a distributed memory environment MPI. A comparative study on these parallel solvers is made, and the results show that the parallelization makes SAPTIS more efficient, powerful, and adaptable.
- Subjects
PARALLEL computers; NONLINEAR analysis; PROBLEM solving; TWO-dimensional models; COMPUTER software; COMPARATIVE studies; MATHEMATICAL complex analysis
- Publication
Mathematical Problems in Engineering, 2013, p1
- ISSN
1024-123X
- Publication type
Article
- DOI
10.1155/2013/764237