The R_meas accumulators per group and the device's per-group sums were eight
group-length locals plus a 56-byte record per group, value-initialised on one
thread for every merge that reports statistics. They are now members, reset in
parallel, and the device branch's pass that assigns each group its shell and
copies its sums runs on all threads; the per-shell observation counts are
integers, gathered per block. The shells' R_meas sums are still added in group
order, as before.
p.mtz md5 unchanged on myob, cytc, thau, kdp, 8a1a and 8qaw (GPU build).
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SVmAWnzCmRKAXVUCdc4iNi
leonarski_fandClaude Opus 5.5
3fa95eea29