- FFTIndexerCPU::ExecuteFFT built the per-direction histograms and scanned the
per-direction spectra for their most prominent peak in one thread; every
direction has its own histogram and spectrum, so the directions are now
split over the refinement threads, each filled and scanned in the same
order as before.
- BeamCenterShortlist2D scanned the whole padded surface (73 M points on a 16M
detector) once per candidate. It now keeps each row's maximum and the first
index holding it and rescans only the rows a suppression touched; rows in
order, first index within a row, is the same first maximum.
md5-identical output; CPU-only 177 -> 169 s and 101 -> 96 s.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01D1G8gJVAy6gp1K5Dz3NE5C
leonarski_fandClaude Opus 5.5
ef4090c830