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Parallel implementation and performance analysis of a linear octree finite element mesh generation scheme

机译:线性八叉树有限元网格生成方案的并行实现和性能分析

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We show a parallel implementation and performance analysis of a linear octree-based mesh generation scheme designed to create reasonable-quality, geometry-adapted unstructured hexahedral meshes automatically from triangulated surface models. We present algorithms for the construction, 2∶1 balancing and meshing large linear octrees on supercomputers. Our scheme uses efficient computer graphics algorithms for surface detection, allowing us to represent complex geometries. An isogranular analysis demonstrates good scalability. Our implementation is able to execute the 2∶1 balancing operations over 3.4 billion octants in less than 10 s per 1.6 million octants per CPU core.
机译:我们展示了基于线性八叉树的网格生成方案的并行实现和性能分析,该方案旨在从三角化的曲面模型自动创建合理质量,几何形状适应的非结构化六面体网格。我们提出了用于在超级计算机上构造,线性匹配21:1平衡和划分大型线性八叉树的算法。我们的方案使用有效的计算机图形算法进行表面检测,使我们能够表示复杂的几何形状。等角分析表明良好的可伸缩性。我们的实现能够在每个CPU内核每160万个八位字节的10秒内执行超过34亿个八位字节的2∶1平衡操作。

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