3-D large-scale wave propagation modeling by spectral element method on Cray T3E multiprocessor

摘要

Highly efficient algorithms and massively parallel computers are needed for acoustic full wave modeling in large scale 3-D realistic unbounded media. In this work a spectral element method in conjunction with a new iterative solution technique is presented. The very high spatial accuracy of the algorithm allows for increased computational efficiency when compated to standard finite element method. In addition, the use of an iterative solver, based no a local element-by -element formulation and a matrix-vector product which is factored and converted to a faster matrix-matrix product, allows for a significant reduction both in storage requirements and in the computational complexity.