-pc_jacobi_type <diagonal,rowmax,rowsum> | - approach for forming the preconditioner | |
-pc_jacobi_abs | - use the absolute value of the diagonal entry | |
-pc_jacobi_fixdiag | - fix for zero diagonal terms |
Zero entries along the diagonal are replaced with the value 1.0
See PCPBJACOBI for a point-block Jacobi preconditioner