GEO-06 geometric QuickHull: analytic microfixtures

Descriptive single-adapter Release measurements. No competitor, speedup, application throughput, or scalability claim. Orientation is exact only for supplied binary64 coordinates. These fixtures are not a general correctness proof.

Source commit ce63bff5a0face88c3c5e977f7d96337e8cbe948; harness commit 74651cb028b9c2359d666ae5f141c66e0b03708b; report geo06-b010fb3df212604b.

7 measured batches per fixture, 1000 QuickHull calls per batch, 1 excluded warmup. Interleaved forward/reverse case order. Each timed batch includes per-call index copy and literal oracle comparison. These are verified-call-batch timings, not isolated adapter latency. Timings use steady-clock nanoseconds; no profile or limiter attribution was collected.

Batch latency; 7 measurements per fixture
FixturePointsHull indicesMedian nsRange ns
square_duplicates70:1:2:324940002466100–2597000
collinear_endpoints51:3790100737800–950900
skinny_triangle40:1:222631002158200–2684600

All 21 measured batches passed the literal vertex-index oracle. The saved CSV retains every warmup and measured row. Observed OS thread count, per-call memory, and internal phase timings are unavailable.

Saved JSON · Raw trial CSV · File hashes

Environment

{
  "os": "Windows-11-10.0.22631-SP0",
  "cpu": "Intel64 Family 6 Model 151 Stepping 5, GenuineIntel",
  "logical_cores": 12,
  "python": "3.13.5",
  "compiler": "C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.44.35207/bin/Hostx64/x64/cl.exe",
  "compiler_version": "19.44.35215.0",
  "build": "Release / NDEBUG / C++20",
  "native_thread_count": {
    "available": false,
    "reason": "not observed"
  },
  "concurrent_work": "UTC 2026-10-16T11:40:40.2506634Z\nCPU load=0% logical cores=12\nSelected concurrent process counts: MSBuild=3, python=29\nEXT-01 timed trials had exited before this snapshot. Other agents deferred heavy local jobs. This is a point-in-time snapshot; the machine was not reserved exclusively.",
  "exe_sha256": "ba9716cf0b6415fe6b4d3f76096e6a66fb743bdf66731b4164a3e16c9bec56de",
  "cmake_cache_sha256": "819bc4764d1c91d92882c9035bc4276185d43987abf59548e31ec015f446cc62",
  "build_provenance_sha256": "dcb90f67f4fc19b8caf7051e89f4865d7b3893bad45029f40f5b540666fc6250",
  "final_build_exit_code": 0
}
Square fixture: four hull corners and one interior point. Duplicate input rows overlay corners.

Publication geo06-f8bee6d8f950343215dd24afeff5091669b8940e7d2106e6834e904b6ec4c074; native report geo06-b010fb3df212604b. Versioned envelope · Publication manifest · Release build evidence.