PCSide#

If the preconditioner is to be applied to the left, right or symmetrically around the operator.

Synopsis#

typedef enum {
  PC_SIDE_DEFAULT = -1,
  PC_LEFT,
  PC_RIGHT,
  PC_SYMMETRIC
} PCSide;

Values#

  • PC_LEFT - applied after the operator is applied

  • PC_RIGHT - applied before the operator is applied

  • PC_SYMMETRIC - a portion of the preconditioner is applied before the operator and the transpose of this portion is applied after the operator is applied.

Note#

Certain KSPType support only a subset of PCSide values

See Also#

Preconditioners, PC, KSPSetPCSide(), KSP, KSPType

Level#

beginner

Location#

include/petscpctypes.h

Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages