petsc-3.12.5 2020-03-29

PCDeflationSetCorrectionFactor

Set coarse problem correction factor. The Preconditioner becomes P*M^{-1} + fact*Q.

#include "petscksp.h" 
PetscErrorCode PCDeflationSetCorrectionFactor(PC pc,PetscScalar fact)

Logically Collective

	pc	- the preconditioner context
	fact	- correction factor

	-pc_deflation_correction <false>	- if true apply coarse problem correction
	-pc_deflation_correction_factor <1.0>	- sets coarse problem correction factor

Any non-zero fact enables the coarse problem correction.

intermediate