PCEisenstatUseDiagonalScaling
Causes the Eisenstat preconditioner to do an additional diagonal preconditioning. For matrices with very different values along the diagonal, this may improve convergence.
Synopsis
int PCEisenstatUseDiagonalScaling(PC pc)
Collective on
PC
Input Parameter
pc -the preconditioner context
Options Database Key
-pc_eisenstat_diagonal_scaling -Activates PCEisenstatUseDiagonalScaling()
Keywords
PC, Eisenstat, use, diagonal, scaling, SSOR
See Also
PCEisenstatSetOmega()
Location: src/pc/impls/eisen/eisen.c
PC Index
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