Szczegóły publikacji
Opis bibliograficzny
Comparison of multi-frontal and alternating direction parallel hybrid memory IGRM direct solver for non-stationary simulations / Maciej WOŹNIAK, Anna Bukowska // Computer Science ; ISSN 1508-2806. — 2020 — vol. 21 no. 4, s. 419–440. — Bibliogr. s. 436–439, Abstr.
Autorzy (2)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 132380 |
|---|---|
| Data dodania do BaDAP | 2021-02-02 |
| Tekst źródłowy | URL |
| DOI | 10.7494/csci.2020.21.4.3834 |
| Rok publikacji | 2020 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Computer Science |
Abstract
Three-dimensional isogeometric analysis (IGA-FEM) is a modern method for simulation. The idea is to utilize B-splines or NURBS basis functions for both computational domain descriptions and engineering computations. Refined isogeometric analysis (rIGA) employs a mixture of patches of elements with B-spline basis functions and C 0 separators between them. This enables a reduction in the computational cost of direct solvers. Both IGA and rIGA come with challenging sparse matrix structures that are expensive to generate. In this paper, we show a hybrid parallelization method using hybrid-memory parallel machines. The two-level parallelization includes the partitioning of the computational mesh into sub-domains on the first level (MPI) and loop parallelization on the second level (OpenMP). We show that the hybrid parallelization of the integration reduces the contribution of this phase significantly. We compare the multi-frontal solver and alternating direction solver, including the integration and the factorization phases
