Big Unstructured Mesh Processing on Multiprocessor Computer Systems

Abstract

This chapter discusses the big unstructured mesh processing on multiprocessor computer systems. The use of unstructured meshes with a large number of nodes makes it possible to approximate a space near the three-dimensional bodies of irregular shape with sufficient accuracy, but in this case, a great computational capability is required. Multiprocessor systems with distributed memory gives required capabilities and makes it possible to expand computational capability unrestrictedly for all intents and purposes. As a rule, multiprocessor simulation with the use of an explicit difference scheme and a simple iteration method proceeds in accordance to the following algorithms: reading the mesh topology from the disk and sharing computational load among the processors, reading the mesh description and mesh functions and determining the necessary parameters for computation of mesh geometry, initialization of data structures for data exchange, simulation, writing simulation results to the disk, and analysis or visualization of the results.