Other Options
–ksp_type <type> e.g., cg (Conjugate Gradient), cr (Conjugate Residual), bcgs (BiCGSTAB), cgs (Conjugate Gradient Squared), tfqmr (Transpose-Free Quasi-Minimal Residual), bicg (BiConjugate Gradient), qmres (Generalized Minimal Residual)
–ksp_rtol <rtol> convergence criterion set by the program to 1.e-2/((m+1)*(n+1))
–pc_type <type> e.g., bjacobi (BlockJacobi), asm (Additive Schwarz)
–sub_pc_type <type> e.g., jacobi (Block Jacobi), sor (SOR), ilu (Incomplete LU)
–ksp_monitor prints an estimate of the l2 -norm of the residual at each iteration
–sles_view prints information on chosen KSP (solver) and PC (preconditioner)
–log_summary prints statistical data
–options_table prints all used options
–options_left prints options table and unused options