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
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