PCSLESSetUseTrue

Sets a flag to indicate that the true matrix (rather than the matrix used to define the preconditioner) is used to compute the residual inside the inner solve.

Synopsis

#include "petscpc.h" 
#include "petscsles.h" 
int PCSLESSetUseTrue(PC pc)

Collective on PC

Input Parameters

pc -the preconditioner context

Options Database Key

-pc_sles_true -Activates PCSLESSetUseTrue()

Note

For the common case in which the preconditioning and linear system matrices are identical, this routine is unnecessary.

Keywords