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Speedup LB particle coupling #4759

Merged
merged 2 commits into from
Aug 22, 2023
Merged

Speedup LB particle coupling #4759

merged 2 commits into from
Aug 22, 2023

Commits on Aug 22, 2023

  1. Speedup LB particle coupling 

    * Move up halo region calculation by one level
* Only consider shifted positions for coupling if the particle is close enough to the boundary to affect a ghost layer
* Introduce a cached vector of pointers to blocks to avoid slow block iteration and position to block matching in waLBerla (partially)

The last point is relevant, because there are 16 calls per particle and time step for get_block_and_cell()
    @RudolfWeeber @jngrad
    RudolfWeeber authored and jngrad committed Aug 22, 2023
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  2. maintainer: Fix LB benchmark

    @jngrad
    jngrad committed Aug 22, 2023
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