A parallel multigrid solver for viscous flows on anisotropic structured grids

✍ Scribed by Manuel Prieto; Ruben S. Montero; Ignacio M. Llorente; Francisco Tirado

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 492 KB
• Volume: 29
• Category: Article
• ISSN: 0167-8191
• DOI: 10.1016/s0167-8191(03)00065-6

✦ Synopsis

This paper presents an efficient parallel multigrid solver for speeding up the computation of a 3-D model that treats the flow of a viscous fluid over a flat plate. The main interest of this simulation lies in exhibiting some basic difficulties that prevent optimal multigrid efficiencies from being achieved. As the computing platform we have used Coral, a Beowulf-class system based on Intel Pentium processors and equipped with GigaNet cLAN and switched Fast Ethernet networks. Our study not only examines the scalability of the solver but also includes a performance evaluation of Coral where the investigated solver has been used to compare several of its design choices, namely, the interconnection network (GigaNet versus switched Fast-Ethernet) and the node configuration (dual nodes versus single nodes). As a reference, the performance results have been compared with those obtained with the NAS-MG benchmark.