Transient Electromagnetic Modelling on Parallel Computers Modelling is critical for the design and interpretation of electromagnetic surveys used to explore the structure of the Earth. However, the complexity of the Earth models which may be considered remains limited by computational requirements. This project applies the computational power of workstation clusters and massively parallel machines such as the Cray T3D to electromagnetic modelling problems. A parallel version of the EM3D modelling code has been developed to run on Unix-based platforms.
Excellent speedup is obtained on the workstation cluster.
This increase in performance has allowed for more rapid modelling and interpretation of three dimensional geological structures. Ultimate performance should be provided by closely-coupled massively parallel supercomputers. Improved performance can be obtained by optimisation for the T3D's architecture at the expense of programming effort and portability. Bill Day worked on this project. Bill has also made an HTML version of the report available from his Minnesota account.