typedef enum {
PC_BDDC_INTERFACE_EXT_DIRICHLET,
PC_BDDC_INTERFACE_EXT_LUMP
} PCBDDCInterfaceExtType;
| PC_BDDC_INTERFACE_EXT_DIRICHLET | - solves Dirichlet interior problem; this is the standard BDDC algorithm | |
| PC_BDDC_INTERFACE_EXT_LUMP | - skips interior solve; sometimes called M_1 and associated with "lumped FETI-DP" |