Table 2.
Problem size | 128 × 128 | 256 × 256 | 512 × 512 | 1024 × 1024 |
---|---|---|---|---|
Initialization time (s) | 0.0395 | 0.0951 | 0.3460 | 1.3371 |
Additional costs (%) | 1.7 | 0.85 | 0.52 | 0.48 |
Even for very large problem sizes the initialization time does not exceed 2 seconds.
Additional costs are given as percentage of the total reconstruction time without preconditioning.