A Parameterized Splitting Preconditioner for Generalized Saddle Point Problems

Table 2

Preconditioned GMRES(20) on steady Oseen problems with different grid sizes (uniform grids), viscosity 𝑣=0.1.

Grid	𝛼	its	LU time	its time	Total time
16×16	0.0001	3	0.0479	0.0244	0.0723
32×32	0.0001	3	0.6312	0.0696	0.7009
64×64	0.0001	4	13.2959	0.3811	13.6770
128×128	0.0001	6	130.5463	3.7727	134.3190