Publication details for Dr Tobias WeinzierlBader, Michael & Weinzierl, Tobias (2015). Cache-Oblivious Spacetree Traversals. In Encyclopedia of Algorithms. Kao, Ming-Yang Springer. 1-6.
- Publication type: Chapter in book
- ISSN/ISBN: 9783642278488 (online)
- DOI: 10.1007/978-3-642-27848-8_583-1
- Keywords: Space-filling curves, Tree-structured grids, Octree, Quadtree, Spacetree, Grid traversals, Cache-oblivious algorithms.
- Further publication details on publisher web site
- Durham Research Online (DRO) - may include full text
Author(s) from Durham
In scientific computing and related fields, mathematical functions are often approximated on meshes where each mesh cell contains a local approximation (e.g., using polynomials) of the represented quantity (density functions, physical quantities such as temperature or pressure, etc.). The grid cells may adaptively refine within areas of high interest or where the applied numerical algorithms demand improved resolution. The resolution even may dynamically change throughout the computation.
In this context, we consider tree-structured adaptive meshes, i.e., meshes that result from a recursive subdivision of grid cells. They can be represented via trees – quadtrees or octrees being the most prominent examples. In typical problem settings, quantities are stored on entities (vertices, edges, faces, cells) of the grid. The computation of these variables is usually characterized by local interaction rules and involves
variables of adjacent grid cells only.