Research Article
Block Preconditioners for Complex Symmetric Linear System with Two-by-Two Block Form
Table 3
IT and CPU for Example
1 with
and
.
| | | Grid | | | | |
| | | | | | | | -GMRES(20) | IT | 4 | 4 | 5 | 5 | | CPU | 0.032 | 0.125 | 3.672 | 31.095 | | -GMRES(20) | IT | 4 | 4 | 5 | 5 | | CPU | 0.36 | 0.094 | 3.672 | 31.796 |
| | | | | | | | -GMRES(20) | IT | 4 | 4 | 4 | 5 | | CPU | 0.031 | 0.109 | 3.171 | 31.062 | | -GMRES(20) | IT | 4 | 4 | 5 | 5 | | CPU | 0.32 | 0.094 | 3.641 | 31.047 |
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