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Method Definition

Except possibly for unifrm, the parameters in this section are probably not useful to most users.

logical unifrm
If true, use a uniform refinement of the grid instead of the adaptive refinement. Default: false

real mgfreq
Determines how often to switch from the refinement phase to the solution phase. Refinement continues until the number of vertices has been increased by a factor of mgfreq. Must be greater than 1. Default: 2.

integer nu1 and nu2
The number of (half) red-black Gauss-Seidel iterations to perform before ( nu1) and after ( nu2) coarse grid correction. Default: nu1=1 and nu2=2

integer ncyc
The number of multigrid cycles in each solution phase. Default: 1



william.mitchell@nist.gov