# KSP options

-ksp_view
-ksp_converged_reason

# Internal use (don't remove it)
-matis_convert_local_nest

# PCBDDC options

# mandatory options

# activate support for saddle point problems
-prec_pc_bddc_benign_trick

# primal space customization
-prec_pc_bddc_nonetflux

# dofs connectivity
-prec_pc_bddc_use_local_mat_graph 0
-prec_pc_bddc_detect_disconnected

# additional options

# verbose output
#-prec_pc_bddc_check_level 1

# local solvers (default "petsc" solvers will fail)
# needs PETSc compiled with support for MUMPS or SuiteSparse
# use "umfpack" in place of "mumps" if you want to use
# SuiteSparse solvers
#
# With PETSc versions older than 3.9
# use "mat_solver_package" instead of "mat_solver_type"
#
-prec_pc_bddc_neumann_pc_type lu
-prec_pc_bddc_neumann_pc_factor_mat_solver_type mumps
-prec_pc_bddc_neumann_pc_factor_mat_solver_package mumps
-prec_pc_bddc_dirichlet_pc_type lu
-prec_pc_bddc_dirichlet_pc_factor_mat_solver_type mumps
-prec_pc_bddc_dirichlet_pc_factor_mat_solver_package mumps

#  MUMPS sometimes fails with a very annoying error
-mat_mumps_icntl_14 500
-prec_pc_bddc_dirichlet_mat_mumps_icntl_14 500
-prec_pc_bddc_neumann_mat_mumps_icntl_14 500

# coarse solver (needs PETSc compiled with support for MUMPS)
# default solver may fail
-prec_pc_bddc_coarse_pc_factor_mat_solver_type mumps
-prec_pc_bddc_coarse_pc_factor_mat_solver_package mumps
-prec_pc_bddc_coarse_pc_type cholesky

# deluxe scaling (needs PETSc compiled with support for MUMPS)
#-prec_pc_bddc_use_deluxe_scaling
-prec_pc_bddc_deluxe_zerorows
-prec_sub_schurs_mat_mumps_icntl_14 500

# adaptive generation of primal space (needs MUMPS)
#-prec_pc_bddc_adaptive_threshold 5
#-prec_pc_bddc_schur_exact