
Publica
Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten. GPU-based polynomial finite element matrix assembly for simplex meshes
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Volltext urn:nbn:de:0011-n-5151548 (1.3 MByte PDF) MD5 Fingerprint: 99ef356bcbec5b858666d43aa11ebfb1 Erstellt am: 17.11.2018 |
Abstract
In this paper, we present a matrix assembly technique for arbitrary polynomial order finite element simulations on simplex meshes for graphics processing units (GPU). Compared to the current state of the art in GPU-based matrix assembly, we avoid the need for an intermediate sparse matrix and perform assembly directly into the final, GPU-optimized data structure. Thereby, we avoid the resulting 180% to 600% memory overhead, depending on polynomial order, and associated allocation time, while simplifying the assembly code and using a more compact mesh representation. We compare our method with existing algorithms and demonstrate significant speedups.