Split relocation kernels#408
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SeverinDiederichs merged 3 commits intoapt-sim:masterfrom Jul 7, 2025
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JuanGonzalezCaminero
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Separate the Relocation kernels for Electrons and gammas into a setup kernel which decides whether a track will relocate, do an interaction, or continue to the next step, and a relocation kernel in which the actual geometry calls are performed.
The reason for this split is that the current relocation kernels, specially in the case of electrons and positrons are very divergent. Only a small portion of the tracks in a warp will do a relocation, but the geometry calls involved are costly, which can slow down the rest of the threads in that warp.
These changes haven't shown a speedup so far in runs without a B-field, but the split should improve profiling results by isolating the relocation code.