| |
Level 0
|
Level 1
|
Level 2
|
|
Grids
|
23
|
27
|
427
|
|
Cells
|
43392
|
320256
|
1395752
|
Color, schlieren and contour plots of the density (click on pictures
to display cuts!)
cuttig plane at z=2.0
|
cutting plane at z=1.2
|
cutting plane at y=0.2
|
cutting plane at x=0.6
|
|
Distribution to 4 processors (back left view)
|
Regions of low density (back left view, iso surface at density=0.92)
|
Blocks of the second refinement level (front right view)
 |
Benchmark
| Task |
P=1
|
P=2
|
P=4
|
|
s
|
%
|
s
|
%
|
s
|
%
|
| Integration |
160927
|
39.6
|
40695
|
49.9
|
18583
|
45.5
|
| Flux correction |
23030
|
5.7
|
1516
|
1.9
|
1361
|
3.3
|
| Boundary setting |
68094
|
16.7
|
19092
|
23.4
|
12921
|
31.6
|
| Recomposition |
118589
|
29.2
|
13540
|
16.6
|
5748
|
14.1
|
| Clustering |
10790
|
2.7
|
2100
|
2.6
|
577
|
1.4
|
| Misc. |
25113
|
6.2
|
4560
|
5.6
|
1653
|
4.1
|
| Total / parall. efficiency |
406543
|
100.0
|
81503
|
249.4
|
40843
|
248.8
|
This particular example benefits significantly from the use of multiple
computing nodes, because the size of the calculation causes heavy swapping
activity on a single node with 256Mb real memory.
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last update:
6/1/04
Blockstructured Adaptive Mesh Refinement in object-oriented C++
