Two variants of minimum discarded fill ordering
Description:
It is well known that the ordering of the unknowns can have a significant effect on the convergence of Preconditioned Conjugate Gradient (PCG) methods. There has been considerable experimental work on the effects of ordering for regular finite difference problems. In many cases, good results have been obtained with preconditioners based on diagonal, spiral or natural row orderings. However, for finite element problems having unstructured grids or grids generated by a local refinement approach, …
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Date:
January 1, 1991
Creator:
D'Azevedo, E.F. (Oak Ridge National Lab., TN (USA)); Forsyth, P.A. & Tang, Wei-Pai (Waterloo Univ., ON (Canada). Dept. of Computer Science)
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