Research Article
Accelerated Circulant and Skew Circulant Splitting Methods for Hermitian Positive Definite Toeplitz Systems
Table 4
Numerical results of Example
5.3 for
,
.
| | | | IT | CPU | CG | CSCS | ACSCS | CG | CSCS | ACSCS |
| 16 | 0.8963 | −0.0771 | 8 | — | 12 | 0.0077 | — | 0.0082 | 32 | 0.5967 | −0.2367 | 16 | — | 18 | 0.0082 | — | 0.0090 | 64 | 0.4444 | 0.1194 | 26 | 22 | 16 | 0.0090 | 0.0092 | 0.0093 | 128 | 0.3282 | 0.0025 | 36 | — | 20 | 0.0102 | — | 0.0105 | 256 | 0.2490 | 0.0473 | 47 | — | 27 | 0.0123 | — | 0.0130 | 512 | 0.1898 | −0.0012 | 59 | — | 29 | 0.0170 | — | 0.0171 | 1024 | 0.1484 | 0.0125 | 68 | — | 31 | 0.0279 | — | 0.0297 |
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