{
 "what": "FastCap, an independent 3-D field solver, grading the many-body coupling model against pairwise extraction",
 "measured_utc": "2026-09-20T15:08:04Z",
 "source": {
  "repository": "genesis (packaging & extraction)",
  "revision": "39f6b06f",
  "path": "benchmarks/fastercap/operator_vs_fastercap_2026_07.json",
  "sha256": "f77856fdec4bf3ececc77a17a1a109a4553ab91c426b017c2820c5b26c8c584e",
  "bytes": 20681
 },
 "not_served": "the source file records the absolute path of a locally built solver binary, so its bytes are not published; the sha256 above commits to them and anyone with the repository can re-check it",
 "method": "read from the committed bytes above with a JSON pointer per field; no value is recomputed here",
 "pointers": {
  "median_advantage_vs_fastcap_x": "/relative_advantage/median_advantage_vs_fastcap_x",
  "operator_beats_pairwise_fraction": "/relative_advantage/operator_beats_pairwise_fraction",
  "n_geometries": "/n_geometries",
  "advantage_ci95": "/relative_advantage/advantage_ci95",
  "prereg_min_advantage_x": "/thresholds/min_advantage_x",
  "prereg_min_win_fraction": "/thresholds/min_win_fraction",
  "prereg_min_completed_layouts": "/thresholds/min_completed_layouts",
  "prereg_content_sha256": "/prereg/content_sha256",
  "verdict": "/verdict",
  "honest_scope": "/honest_scope",
  "generated_utc": "/generated_utc"
 },
 "median_advantage_vs_fastcap_x": 15.567,
 "operator_beats_pairwise_fraction": 1.0,
 "n_geometries": 11,
 "advantage_ci95": [
  10.883,
  23.141
 ],
 "prereg_min_advantage_x": 2.0,
 "prereg_min_win_fraction": 0.8,
 "prereg_min_completed_layouts": 8,
 "prereg_content_sha256": "91f6f6bb94fdde85df21ea4825f8ae7faed7e08d09502c86fb6299e372d8fbec",
 "verdict": "PASS",
 "honest_scope": "Sim-vs-sim (FastCap + BEM + the operator are all simulators; 0 measured TGV points). CAPACITANCE anchored to independent FastCap 3D hierarchical BEM; inductance stays BEM (disclosed hybrid truth, the Gate-76 convention); C-coupling dominates the S-error in these tight-pitch geometries. FastCap finite-3D Maxwell C length-normalized by the layout's own thickness (end fringing disclosed in absolute_solver_gap). Band [1,10,28] GHz (quasi-static-valid). Operator checkpoint FROZEN. FastCap-fail / BEM-fail / unplaceable geometries excluded with counts (drop-and-count).",
 "generated_utc": "2026-07-03T01:40:19Z"
}