PCEisenstatNoDiagonalScaling

Causes the Eisenstat preconditioner not to do additional diagonal preconditioning. For matrices with a constant along the diagonal, this may save a small amount of work.

Synopsis

int PCEisenstatNoDiagonalScaling(PC pc)
Collective on PC

Input Parameter

pc -the preconditioner context

Options Database Key

-pc_eisenstat_no_diagonal_scaling -Activates PCEisenstatNoDiagonalScaling()

Keywords

PC, Eisenstat, use, diagonal, scaling, SSOR

See Also

PCEisenstatSetOmega()

Level:intermediate
Location:src/sles/pc/impls/eisen/eisen.c
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