petsc-3.7.7 2017-09-25

PCASMType

Type of additive Schwarz method to use

typedef enum {PC_ASM_BASIC = 3,PC_ASM_RESTRICT = 1,PC_ASM_INTERPOLATE = 2,PC_ASM_NONE = 0} PCASMType;

 PC_ASM_BASIC        - Symmetric version where residuals from the ghost points are used

                       and computed values in ghost regions are added together.

                       Classical standard additive Schwarz.

 PC_ASM_RESTRICT     - Residuals from ghost points are used but computed values in ghost

                       region are discarded.

                       Default.

 PC_ASM_INTERPOLATE  - Residuals from ghost points are not used, computed values in ghost

                       region are added back in.

 PC_ASM_NONE         - Residuals from ghost points are not used, computed ghost values are

                       discarded.

                       Not very good.