Table 3:
Properties of IULBF1, IULBF2, IULBF3, and IULBF4 preconditioners.
Method
IULBF1
IULBF2
IULBF3
IULBF4
Density
𝑃
time
Density
𝑃
time
Density
𝑃
time
Density
𝑃
time
hor-131
0.893352
34.422
1.104017
62.11
1.046628
26.219
1.889527
63.328
sherman2
1.434745
766.187
2.834069
1166.11
0.823720
562.094
1.335498
1263.34
cavity05
0.682030
1596.86
1.478304
1887.42
0.686106
803.25
1.538000
2071.98
cavity06
0.651693
663.953
1.549958
1870.22
0.657894
791.422
1.628745
1337.67
sherman4
1.270470
789.687
1.345483
870.672
1.386952
459.625
2.055203
622.031
epb0
0.850721
1077.48
0.853941
3577.97
1.009274
951.688
1.356775
2924.58
pde2961
1.278642
7344.64
1.357011
15909.7
1.309427
4634.16
2.180871
9440.33