jungfrauandClaude Opus 5
56512414aa
The sort that orders every observation by (h,k,l,image_number) was not a total order: two observations can genuinely share all four. The predictor emits BOTH intersections of a reflection's rotation circle with the Ewald sphere, and near the blind region - where zeta is smallest - the two are close enough in angle that both are accepted on the same frame. Which of them came first was then whatever the sort happened to produce. That was observable. The combine takes on_ice from the FIRST member of a rocking event, so the order decided whether a full was flagged as ice at all, and its per-event sums are floating point, so it moved intensities in their last bits. The observation's own index is now the final key, which orders them by arrival - and, more usefully, makes the order unique, so it no longer depends on which algorithm sorted it. sigma never changes once it is uploaded, so 1/sigma is the same in all thirty IRLS iterations of all three scaling iterations of all five scaling passes. It was being recomputed every time: a 64-bit reciprocal is a hardware estimate plus five refinement steps, and the profile put the three divisions in that loop at 21 of its 31 double-precision instructions. It is computed once now, in the pass that already streams every observation. The CPU has always hoisted it; this is the GPU catching up. Same expression on the same operand, so the value is what the loop used to compute, bit for bit. Also: PrepScaleObsKernel is not a grid-stride loop, but the scale-fulls path capped its grid at 65535 blocks like the grid-stride kernels around it. Above 16.8 million fulls that silently left the tail of sco_coeff/sco_ok stale. No dataset here reaches it; the cap is simply wrong for that kernel. And the AoS-to-SoA staging that feeds the GPU - the widest pass in Ingest, reading an 80-byte struct and writing fourteen arrays out of it - ran on one thread. Full 24-crystal battery: same space group on all 24, none failed, one crystal moved R_meas by 0.8 points with CC unchanged (it moves by that much between runs of an identical binary). 15m32s -> 13m35s. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Jungfraujoch
Application to receive data from the PSI JUNGFRAU and EIGER detectors.
All documentation is now placed in docs/ subdirectory and for the current version hosted on Jungfraujoch Read The Docs page.