{
  "schema": "semiagora.knowledge-sim-result.v1",
  "experimentId": "KNOWLEDGE_SIM_SPRINT_2026-08-14",
  "generatedAtKst": "2026-08-14",
  "sections": [
    "Explore",
    "Run Card",
    "Export",
    "Methods",
    "Limits",
    "Evidence"
  ],
  "boundary": [
    "precomputed educational data only",
    "no live solver or server-side execution",
    "no proprietary PDK, foundry model deck, measured company data, or process recipe",
    "no equipment operation instructions or production qualification claims",
    "external literature and repositories are cited as source spines, not copied"
  ],
  "simulationId": "SA-EDA-STA-001",
  "slug": "sta-liberty-path-slack-replay",
  "title": "STA Liberty path slack replay",
  "track": "Physical Design / Open EDA",
  "lessonRoute": "/learn/physical-verification-evidence-ladder",
  "simulationRoute": "/simulations/sta-liberty-path-slack-replay",
  "promotionPriority": "P0",
  "modelType": "toy Liberty/SDC timing-path replay",
  "sourceLinks": [
    "https://github.com/The-OpenROAD-Project/OpenSTA",
    "https://docs.verilogtorouting.org/en/latest/tutorials/timing_analysis/",
    "https://github.com/VLSIDA/chip-tutorials/blob/main/sta.md"
  ],
  "knobs": [
    {
      "name": "vdd_v",
      "unit": "V",
      "values": [
        0.72,
        0.8,
        0.88
      ]
    },
    {
      "name": "ambient_c",
      "unit": "C",
      "values": [
        -40,
        25,
        125
      ]
    },
    {
      "name": "load_ff",
      "unit": "fF",
      "values": [
        4,
        12,
        30
      ]
    },
    {
      "name": "path_stages",
      "unit": "count",
      "values": [
        6,
        12,
        20
      ]
    }
  ],
  "metrics": [
    "cell_delay_ps_proxy",
    "wire_delay_ps_proxy",
    "setup_slack_ps_proxy",
    "hold_slack_ps_proxy",
    "criticality_proxy"
  ],
  "limitations": [
    "This is not OpenSTA output and does not ingest a Liberty, SDC, SPEF, or netlist file.",
    "Use to teach timing report vocabulary before a rights-reviewed OpenSTA reproduction package.",
    "No signoff timing claim is made."
  ],
  "counts": {
    "rows": 81,
    "knobs": 4,
    "metrics": 5
  },
  "representativeFindings": [
    "The public site needs an STA replay because learners in design roles need slack, path depth, PVT, and load vocabulary early.",
    "A fixed-data card can prepare the audience for a later OpenSTA GitHub package without running arbitrary netlists on the site.",
    "Setup and hold should be shown together so timing is not reduced to one negative-slack screenshot."
  ],
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