A Parameterized Splitting Preconditioner for Generalized Saddle Point Problems

Table 9

Preconditioned GMRES(20) on Stokes problems with different grid sizes (uniform grids).

Grid	𝛼	its	LU time	its time	Total time
16×16	norm(𝐶,fro)	21	0.0240	0.0473	0.0713
32×32	norm(𝐶,fro)	20	0.0890	0.1497	0.2387
64×64	norm(𝐶,fro)	20	0.8387	0.6191	1.4578
128×128	norm(𝐶,fro)	20	6.8917	3.0866	9.9783