Air pollution forecasting puts a high demand on the memory and the floating point performance of modern computers. For this kind of problems massively parallel computers are very promising, although the software tools and the I/O facilities on those machines are still under-developed. This report describes the work involved to port a 3D model, which was optimized for the parallel vector computer Cray C90, to a parallel distributed memory computer, namely the Cray T3D. After some introductory remarks about the model and the communication therein, examples are given to describe the performance of the T3D-machine on simple problems. Thereafter performance measurements are shown with kernels of the model using shared and explicit programming.

MATHEMATICAL SOFTWARE (acm G.4), PHYSICAL SCIENCES AND ENGINEERING (acm J.2), Partial Differential Equations (acm G.1.8), PHYSICAL SCIENCES AND ENGINEERING (acm J.2)
Parallel computation (msc 65Y05), Method of lines (msc 65M20)
CWI
Department of Numerical Mathematics [NM]
Numerieke Wiskunde

Keßler, C, Blom, J.G, & Verwer, J.G. (1995). Porting a 3D-model for the transport of reactive air pollutants to the parallel machine T3D. Department of Numerical Mathematics [NM]. CWI.