Research Article
Block Preconditioners for Complex Symmetric Linear System with Two-by-Two Block Form
Table 4
IT and CPU for Example
2 with
and
.
| | | Grid | | | | |
| | | | | | | | -GMRES(20) | IT | 4 | 4 | 4 | 4 | | CPU | 0.032 | 0.11 | 3.016 | 25.562 | | -GMRES(20) | IT | 4 | 4 | 4 | 4 | | CPU | 0.36 | 0.078 | 3.015 | 26.031 |
| | | | | | | | -GMRES(20) | IT | 4 | 4 | 4 | 4 | | CPU | 0.031 | 0.11 | 3.266 | 26.124 | | -GMRES(20) | IT | 4 | 4 | 4 | 4 | | CPU | 0.32 | 0.078 | 3.421 | 26.969 |
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