A modified equation approach to constructing fourth order methods for acoustic wave propagation
SIAM Journal on Scientific and Statistical Computing
What have we learnt from using real parallel machines to solve real problems?
C3P Proceedings of the third conference on Hypercube concurrent computers and applications - Volume 2
Fortran at ten gigaflops: the connection machine convolution compiler
PLDI '91 Proceedings of the ACM SIGPLAN 1991 conference on Programming language design and implementation
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Wave-equation seismic modeling in two space dimensions is computationally intensive, often requiring hours of supercomputer CPU time to run typical geological models with 500 × 500 grids and 100 sources. This paper analyzes the performance of ACOUS2D, an explicit 4th-order finite-difference program, on Intel's 16-processor vector hypercube computer. The conversion of the sequential version of ACOUS2D to run on hypercube was straightforward, but time-consuming. The key consideration for optimal efficiency is load balancing. On a fairly typical geologic model, the 16-processor Intel vector hypercube computer ran ACOUS2D at 1/3 the speed of a Cray-1S.