Research Article
Accelerated Circulant and Skew Circulant Splitting Methods for Hermitian Positive Definite Toeplitz Systems
Table 3
Numerical results of Example
5.3 for
,
.
| | | | IT | CPU | CG | CSCS | ACSCS | CG | CSCS | ACSCS |
| 16 | 1.0621 | 0.1280 | 8 | 20 | 10 | 0.0072 | 0.0095 | 0.0080 | 32 | 0.7746 | −0.0251 | 16 | — | 13 | 0.0077 | — | 0.0085 | 64 | 0.6285 | −0.1005 | 23 | — | 15 | 0.0082 | — | 0.0090 | 128 | 0.5169 | −0.1379 | 28 | — | 18 | 0.0096 | — | 0.0096 | 256 | 0.4410 | 0.1485 | 32 | 20 | 15 | 0.0107 | 0.0117 | 0.0100 | 512 | 0.3841 | 0.1207 | 34 | 23 | 16 | 0.0128 | 0.0139 | 0.0125 | 1024 | 0.3444 | 0.1067 | 35 | 24 | 17 | 0.0173 | 0.0245 | 0.0185 |
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