Two-Level Constraint Solver and Pipelined Local Batching for Rigid Body Simulation on GPUs - GPU Pro: Advanced Rendering Techniques - page 462

Scene 1 Scene 2

Scene 3 Scene 4

Scene 5 Scene 6

Figure 4.5. Test scenes.

nonempty cells to be about equal to the number of SIMDs on the GPU to assign
a computation for each SIMD.
We assumed that the ratio of non-empty cells to all cells is about 0.5. Thus,
when a 64

64 split is used, there are 2,048 non-empty cells in total, or 512
non-empty cells for each constraint set on average. The GPU we used for the
experiments has 128 SIMDs. Therefore, the number of non-empty cells for each
set is more than the number of SIMDs if the population ratio is 0.5. Figure 4.6

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