Apply smooth-G's corr adjustment on the device (a small kernel: corr[i] *=
ratio[frame[i]] for flagged frames, double-then-float, matching host SmoothG) so the
per-image corr never leaves the GPU: it now stays resident through scaling ->
smooth-G -> per-frame CC -> combine, and across the two space-group passes exactly as
the old host round-trip did. The host only builds the tiny per-frame ratio (g/g_smooth
via the extracted ComputeSmoothGWindow) and refreshes host partials[].corr solely for
the CPU-combine path (JFJOCH_RSM_CPU_COMBINE or the diagnostic dump).
This drops the post-scale GetCorr and the two SetCorr re-uploads (~3x25MB/pass) plus the
6.3M host corr-adjust loop: scale-partials ~0.21->~0.10s and the smooth+combine region
shrinks, taking RSM on lyso to ~0.91s (was ~1.47s with phase-1-only, ~1.71s full-CPU) -
under the 1s target for this crystal; merge+stats (~0.49s) is now the dominant chunk.
Bit-identical (GPU smooth-G == host SmoothG on the resident corr); validated across the
battery (15/15 deterministic crystals bit-identical to CPU across default / CPU-combine /
NO_GPU, only EP_cs_01-24 noise wobbles). Non-CUDA build unaffected.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
leonarski_fandClaude Opus 4.8
786edf9929