| GMRES | 改进算法 | ||||
N | 相对残差 | 迭代次数 | CPU计算时间 | 相对残差 | 迭代次数 | CPU计算时间 |
100 | 1.26 × 10−11 | 17 | 4.18 × 10−3 | 1.26 × 10−11 | 17 | 5.17 × 10−3 |
200 | 1.52 × 10−11 | 17 | 5.85 × 10−3 | 1.52 × 10−11 | 17 | 7.12 × 10−3 |
400 | 1.62 × 10−11 | 17 | 7.43 × 10−3 | 1.62 × 10−11 | 17 | 9.91 × 10−3 |
800 | 1.65 × 10−11 | 17 | 9.55 × 10−3 | 1.65 × 10−11 | 17 | 1.16 × 10−2 |
1600 | 1.67 × 10−11 | 17 | 1.77 × 10−3 | 0.67 × 10−11 | 17 | 1.71 × 10−2 |
3200 | 1.67 × 10−11 | 17 | 6.55 × 10−3 | 0.67 × 10−11 | 17 | 2.96 × 10−2 |