Table 1
The test matrices.
| Block CSR format |
||||
|---|---|---|---|---|
| Matrix | Size | Block size | Nonzero blocks | Remark |
| GCS2K | 370 982 | 3 | 2 928 696 | Well-conditioned |
| CantaF3 | 8016 | 3 | 65 202 | Ill-conditioned |
| SPE10 | 1 094 421 | 2 | 6 421 171 | Ill-conditioned |
| HIS | 34 761 | 3 | 189 661 | Ill-conditioned |