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Experiment 07: AoSoA or Blocked Layout

1. Focus

Evaluate blocked record layouts that sit between pure AoS and pure SoA.

2. Question

Can AoSoA recover some of SoA's access efficiency without fully splitting every field into its own array?

3. Variants

aos
aosoa_blocked
soa

4. Method

Keep the logical particle update fixed and compare interleaved, blocked, and fully split storage.
Use the same workload size, timing path, and correctness rules for all layouts.

5. Outputs

Median GPU time by layout.
Relative speedup vs aos.
Practical guidance on whether blocked layouts justify their complexity.

6. Interpretation

AoSoA is a compromise layout, so the result should be read as a tradeoff study rather than a binary winner-take-all test.
If a blocked layout wins, it may be the best engineering choice when full SoA is intrusive.