Cycle 0:
Number of active cells: 64
Number of degrees of freedom: 256
-Time of assemble_system1: 0.26
-Time of assemble_system2: 0.22
+Time of assemble_system1: 0.04
+Time of assemble_system2: 0.04
solution1 and solution2 do not differ.
Writing grid to <grid-0.eps>...
Writing solution to <sol-0.gnuplot>...
Cycle 1:
Number of active cells: 112
Number of degrees of freedom: 448
-Time of assemble_system1: 0.47
-Time of assemble_system2: 0.39
+Time of assemble_system1: 0.08
+Time of assemble_system2: 0.08
solution1 and solution2 do not differ.
Writing grid to <grid-1.eps>...
Writing solution to <sol-1.gnuplot>...
Cycle 2:
Number of active cells: 214
Number of degrees of freedom: 856
-Time of assemble_system1: 0.89
-Time of assemble_system2: 0.73
+Time of assemble_system1: 0.16
+Time of assemble_system2: 0.15
solution1 and solution2 do not differ.
Writing grid to <grid-2.eps>...
Writing solution to <sol-2.gnuplot>...
Cycle 3:
Number of active cells: 415
Number of degrees of freedom: 1660
-Time of assemble_system1: 1.78
-Time of assemble_system2: 1.43
+Time of assemble_system1: 0.31
+Time of assemble_system2: 0.27
solution1 and solution2 do not differ.
Writing grid to <grid-3.eps>...
Writing solution to <sol-3.gnuplot>...
Cycle 4:
Number of active cells: 796
Number of degrees of freedom: 3184
-Time of assemble_system1: 3.29
-Time of assemble_system2: 2.76
+Time of assemble_system1: 0.59
+Time of assemble_system2: 0.52
solution1 and solution2 do not differ.
Writing grid to <grid-4.eps>...
Writing solution to <sol-4.gnuplot>...
Cycle 5:
Number of active cells: 1561
Number of degrees of freedom: 6244
-Time of assemble_system1: 6.61
-Time of assemble_system2: 5.4
+Time of assemble_system1: 1.15
+Time of assemble_system2: 1.06
solution1 and solution2 do not differ.
Writing grid to <grid-5.eps>...
Writing solution to <sol-5.gnuplot>...
once (second version of the DG method) in comparison with treating
each face twice within a nested loop over all cells and all faces of
each cell (first version), is much less than one might have
-expected. The gain is less than 20% on all refinement steps.
+expected. The gain is less than 10% on the last refinement steps.
</p>
<p> First we show the solutions on the initial mesh, the mesh after two