Proceedings Vol. 23 (2017)
ENGINEERING MECHANICS 2017
May 15 – 18, 2017, Svratka, Czech Republic
Copyright © 2017 Brno University of Technology, Faculty of Mechanical Engineering, Institute of Solid Mechanics, Mechatronics and Biomechanics, Brno
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)
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pages 206 - 209, full text
Numerical modelling using high performance computers brings in new opportunities in finite element computations. The contribution focuses on comparing the efficiency of different existing libraries to solution of large, sparse, non-symmetric systems of linear equations, based on direct or iterative algorithms. In particular, the direct solver from SuperLU library (X.S. Li, 1999), iterative solver from Portable, Extensible Toolkit for Scientific Computation (PETSc) are compared. Additionally, the performance and scalability of parallel SuperLU solver is studied, using OpenMP (Chapman, 2008, Barney, 2014) and POSIX threads (Nicols, 1996) based on shared memory model. Also, the scalability of PETSc solver on distributed memory model using Message passing interface (MPI) (Pacheco, 1997) is evaluated. The paper shows that parallelization can efficiently exploit the power of modern available hardware and significantly reduce the computation time.
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