Research Article
A Generalized HSS Iteration Method for Continuous Sylvester Equations
Table 2
Numerical results for GHSS and HSS with the theoretical quasi-optimal iteration parameters.
| | | Method | GHSS | HSS | | | IT | CPU | | IT | CPU |
| | | 0.0001 | 1.5236 | 2 | 0.0007 | 2.0752 | 15 | 0.0282 | | 0.0002 | 0.4705 | 3 | 0.0019 | 1.0234 | 27 | 0.0261 | | 0.0007 | 0.1294 | 4 | 0.0094 | 0.5147 | 50 | 0.1343 | | 0.0028 | 0.0361 | 8 | 0.0938 | 0.2593 | 91 | 1.0901 | | 0.0066 | 0.0151 | 21 | 1.4448 | 0.1303 | 169 | 11.704 |
| | | 0.0060 | 1.5263 | 4 | 0.0013 | 2.0752 | 15 | 0.0060 | | 0.0201 | 0.4861 | 6 | 0.0038 | 1.0234 | 27 | 0.0263 | | 0.0555 | 0.1793 | 15 | 0.0353 | 0.5147 | 49 | 0.1291 | | 0.0867 | 0.1151 | 47 | 0.5458 | 0.2593 | 93 | 1.0875 | | 0.0983 | 0.1017 | 161 | 11.069 | 0.1303 | 198 | 13.644 |
| | | 0.5322 | 1.7300 | 8 | 0.0026 | 2.0752 | 14 | 0.0045 | | 0.9733 | 1.0046 | 22 | 0.0142 | 1.0234 | 23 | 0.0342 | | 0.5147 | 0.5147 | 41 | 0.0967 | 0.5147 | 41 | 0.1106 | | 0.2593 | 0.2593 | 81 | 0.9405 | 0.2593 | 81 | 0.9638 | | 0.1303 | 0.1303 | 170 | 11.867 | 0.1303 | 170 | 11.872 |
| | | 2.0752 | 2.0752 | 12 | 0.0039 | 2.0752 | 12 | 0.0040 | | 1.0234 | 1.0234 | 23 | 0.0259 | 1.0234 | 23 | 0.0598 | | 0.5147 | 0.5147 | 44 | 0.1073 | 0.5147 | 44 | 0.1473 | | 0.2593 | 0.2593 | 85 | 1.0074 | 0.2593 | 85 | 1.0354 | | 0.1303 | 0.1303 | 169 | 11.913 | 0.1303 | 169 | 11.928 |
| | | 72.911 | 2.7778 | 7 | 0.0023 | 2.0752 | 12 | 0.0039 | | 26.701 | 2.0916 | 9 | 0.0060 | 1.0234 | 20 | 0.0823 | | 8.6843 | 1.6894 | 14 | 0.0342 | 0.5147 | 36 | 0.1035 | | 3.0610 | 1.2284 | 24 | 0.2858 | 0.2593 | 66 | 0.8051 | | 1.2364 | 0.7699 | 44 | 3.0805 | 0.1303 | 126 | 8.9284 |
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