2D Euler equations - Backward facing step

3 Grid Levels (density at time t = 0.75)

Results: 2 Levels / 3 Levels

Contour lines of density on refinement grids (P=1)

bfstep3.gif

Level 0 Level 1 Level 2
Grids 2 48 111
Cells 67500 25792 187248



Benchmark


Task P=1 P=2, GuC-Factor=2 P=4, GuC-Factor=2 P=2, GuC-Factor=1 P=4, GuC-Factor=1
s % s % s % s % s %
Integration 3930 73.1 1848 62.0 930 53.5 2077 43.6 1045 38.3
Flux correction 95 1.8 66 2.2 63 3.6 91 1.9 78 2.9
Boundary setting 657 12.2 660 22.1 463 26.7 704 14.8 458 16.8
Recomposition 271 5.0 231 7.7 176 10.1 1685 35.4 1015 37.2
Clustering 177 3.3 67 2.2 35 2.0 69 1.4 36 1.3
Misc. 243 4.5 110 3.7 70 4.0 131 3.0 85 3.5
Total / Parallel Efficiency 5373 100.0 2982 90.1 1737 77.3 4756 56.5 2717 49.4

If a relatively fine base grid is used, the choice of a larger GuC-Factor can decrease the overhead for partitioning and recomposition significantly. In this example, the partitioner can use up to 67500 units for GuC-Factor=1, while for GuC-Factor=2 only up to 16875 units are allowed.


<--- Problem description



-- RalfDeiterding - 04 Dec 2004

Amroc > ClawpackHome > ClawpackExamples > ClawpackEuler2dBackward > ClawpackEuler2dBackward3L
Copyright © 1997-2024 California Institute of Technology.