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The Hierarchical Domain Decomposition Pre-Processing Modulewith the Parallel Mesh Refinement Function withoutCommunication

Murotani, Kohei, Shin-ichiro Sugimoto, Hiroshi Kawai, and Shinobu Yoshimura

Research Notes, 20th International Meshing Roundtable, Springer-Verlag, pp.Research Note, October 23-26 2011

IMR
PROCEEDINGS

20th International Meshing Roundtable
Paris, France
October 23-26, 2011

The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
Email: [muro kawai]@save.sys.t.u-tokyo.ac.jp, [sugimoto yoshi]@sys.t.u-tokyo.ac.jp

Summary
This paper describes a parallel fast generation method of large-scale meshes for a hierarchical domain decomposition method implemented in the open source parallel finite element software ADVENTURE. The present authors have newly developed a parallel algorithm such that communication table is updated and inherited in parallel during mesh refinement after the initial communication table is generated from an initial mesh. As a result, the generation of a refined mesh model over billions degrees of freedom (DOFs) from an initial medium-size mesh model of about a million DOFs can be performed in a parallel computer in a short time.

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