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{
  "prompt": "An intimate natural-light portrait of an elderly woman in a botanical conservatory, reading a small red clothbound book. Warm brown skin with visible freckles and fine wrinkles, silver curls lit from behind, intricate indigo knit cardigan. Soft fern fronds out of focus in the foreground; detailed hands and realistic skin texture. A candid 85mm color photograph with gentle shadows and no lettering.",
  "seed": 1234,
  "size": [
    2048,
    2048
  ],
  "canvas": [
    2048,
    2048
  ],
  "rng": "torch",
  "reference_images": [],
  "reference_sha256": [],
  "sigmas": [
    1.0,
    0.9675236940383911,
    0.8875485062599182,
    0.75,
    0.5327739119529724,
    0.23200887441635132,
    0.0
  ],
  "steps": [
    0,
    1,
    2,
    3,
    4,
    5
  ],
  "vae": {
    "tile_batch": 1
  },
  "vae_backend": "mlx",
  "environment": {
    "platform": "macOS-27.0.1-arm64-arm-64bit",
    "machine": "arm64",
    "metal": {
      "device_name": "Apple M5 Pro",
      "max_recommended_working_set_size": 55662788608,
      "memory_size": 68719476736,
      "architecture": "applegpu_g17s",
      "max_buffer_length": 41747087360,
      "resource_limit": 499000
    },
    "versions": {
      "mlx": "0.32.4",
      "mlx-metal": "0.32.4",
      "numpy": "2.5.4",
      "safetensors": "0.8.0",
      "transformers": "4.57.6",
      "torch": "2.15.0",
      "Pillow": "13.0.0",
      "scikit-image": "0.26.0"
    },
    "precision_environment": {
      "MLX_ENABLE_TF32": "0",
      "MLX_CONV_WINOGRAD": "0"
    }
  },
  "validation_scope": "Same final latent; decoder only",
  "timing_scope": "Warm decoder only; model loading excluded",
  "timings": {
    "decode_s": 5.739497271017171
  },
  "source_trace": "outputs/optimization-v2/portrait/wired-baseline-2.trace.safetensors",
  "source_trace_sha256": "5808ccec8c5049ce2761d0b5f41638e28107b287c9e63fe6bef175e600c9c6c8",
  "output": "comparisons/optimization-v2/decoder-portrait/native-b1.png",
  "png_sha256": "32af5e3b95919e79e0019058ec396824c5861f9a43a4fa50c7b20348e8d81933"
}