{
  "provenance": {
    "generator": "synth.py",
    "tool": "nosis",
    "target": {
      "family": "ecp5",
      "device": "LFE5U-25F"
    },
    "inputs": "40 signed INT8 feature channels at the classifier dims",
    "note": "LUT4, carry and slice counts on an ECP5, not abstract gates"
  },
  "variants": {
    "sum": {
      "slices": 312,
      "lut4": 31,
      "ccu2c": 312,
      "ffs": 0,
      "bound": "carry",
      "critical_path_ns": 10.4,
      "device": "LFE5U-25F",
      "rtl": "rtl/sum.v",
      "thresholds": "runtime input"
    },
    "sum_folded": {
      "slices": 312,
      "lut4": 21,
      "ccu2c": 312,
      "ffs": 0,
      "bound": "carry",
      "critical_path_ns": 10.4,
      "device": "LFE5U-25F",
      "rtl": "rtl/sum_folded.v",
      "thresholds": "baked"
    },
    "popcount": {
      "slices": 146,
      "lut4": 291,
      "ccu2c": 118,
      "ffs": 0,
      "bound": "lut",
      "critical_path_ns": 10.8,
      "device": "LFE5U-25F",
      "rtl": "rtl/popcount.v",
      "thresholds": "runtime inputs"
    },
    "popcount_folded": {
      "slices": 118,
      "lut4": 109,
      "ccu2c": 118,
      "ffs": 0,
      "bound": "carry",
      "critical_path_ns": 10.8,
      "device": "LFE5U-25F",
      "rtl": "rtl/popcount_folded.v",
      "thresholds": "baked"
    }
  },
  "accuracy": {
    "protocol": "balanced COCO val subsample, see calibrate.py",
    "additive_F1": 0.8843,
    "popcount_F1": 0.8764,
    "delta": -0.0079
  }
}