Cycle 1:
Number of active cells: 44
Number of degrees of freedom: 57 (by level: 8, 25, 48)
- 7 CG iterations needed to obtain convergence.
+ 6 CG iterations needed to obtain convergence.
Cycle 2:
Number of active cells: 92
Number of degrees of freedom: 117 (by level: 8, 25, 80, 60)
- 8 CG iterations needed to obtain convergence.
+ 7 CG iterations needed to obtain convergence.
Cycle 3:
Number of active cells: 188
Number of degrees of freedom: 221 (by level: 8, 25, 80, 200)
- 11 CG iterations needed to obtain convergence.
+ 9 CG iterations needed to obtain convergence.
Cycle 4:
Number of active cells: 416
Number of degrees of freedom: 485 (by level: 8, 25, 89, 288, 280)
- 11 CG iterations needed to obtain convergence.
+ 10 CG iterations needed to obtain convergence.
Cycle 5:
Number of active cells: 800
Number of degrees of freedom: 925 (by level: 8, 25, 89, 288, 784, 132)
- 13 CG iterations needed to obtain convergence.
+ 11 CG iterations needed to obtain convergence.
Cycle 6:
- Number of active cells: 1604
- Number of degrees of freedom: 1833 (by level: 8, 25, 89, 304, 1000, 1116, 72)
- 13 CG iterations needed to obtain convergence.
+ Number of active cells: 1628
+ Number of degrees of freedom: 1865 (by level: 8, 25, 89, 304, 1000, 1164, 72)
+ 11 CG iterations needed to obtain convergence.
Cycle 7:
- Number of active cells: 3164
- Number of degrees of freedom: 3581 (by level: 8, 25, 89, 328, 1032, 2176, 1392)
- 15 CG iterations needed to obtain convergence.
+ Number of active cells: 3194
+ Number of degrees of freedom: 3603 (by level: 8, 25, 89, 328, 1032, 2200, 1392)
+ 12 CG iterations needed to obtain convergence.
</pre>
That's not perfect — we would have hoped for a constant number
of iterations rather than one that increases as we get more and more