The hierarchical domain decomposition pre-processing module with the parallel mesh refinement function without communication

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.