{ "validation_scope": "Same final latent; decoder only", "reference": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/fp32-reference/fp32-b4-compiled.png", "native_size": [ 2048, 2048 ], "crop_xyxy": [ 768, 768, 1280, 1280 ], "heatmap_gain": 8, "metric_definition": { "psnr": "Full-resolution 8-bit RGB MSE, data range 255; null means infinity", "ssim": "scikit-image RGB structural_similarity, channel_axis=-1, data_range=255, default 7x7 window", "mae": "Full-resolution mean absolute 8-bit RGB error" }, "rows": [ { "label": "fp32-b4-compiled", "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/fp32-reference/fp32-b4-compiled.png", "png_sha256": "5fcd8beddbcb13748019dfd04f629599693b61264bb5b787258cae583dfe0b53", "pixel_identical": true, "mae_8bit": 0.0, "max_error_8bit": 0, "psnr_db": null, "ssim_rgb": 1.0, "timings": { "decode_s": 5.210008415859193 }, "steps": [ 0, 1, 2, 3, 4, 5 ], "timing_scope": "Warm decoder only; model loading excluded" }, { "label": "native-b1", "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/fp32-reference/native-b1.png", "png_sha256": "63684ef8ae148a35ddef02650c6aa30b4843b47c99b06cec2ea3708ef3fc2293", "pixel_identical": false, "mae_8bit": 0.5589210987091064, "max_error_8bit": 16, "psnr_db": 49.78516664658046, "ssim_rgb": 0.9966293860246318, "timings": { "decode_s": 4.797312458977103 }, "steps": [ 0, 1, 2, 3, 4, 5 ], "timing_scope": "Warm decoder only; model loading excluded" }, { "label": "native-b4", "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/fp32-reference/native-b4.png", "png_sha256": "63684ef8ae148a35ddef02650c6aa30b4843b47c99b06cec2ea3708ef3fc2293", "pixel_identical": false, "mae_8bit": 0.5589210987091064, "max_error_8bit": 16, "psnr_db": 49.78516664658046, "ssim_rgb": 0.9966293860246318, "timings": { "decode_s": 2.0591762911062688 }, "steps": [ 0, 1, 2, 3, 4, 5 ], "timing_scope": "Warm decoder only; model loading excluded" }, { "label": "compiled-b4", "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/fp32-reference/compiled-b4.png", "png_sha256": "63684ef8ae148a35ddef02650c6aa30b4843b47c99b06cec2ea3708ef3fc2293", "pixel_identical": false, "mae_8bit": 0.5589210987091064, "max_error_8bit": 16, "psnr_db": 49.78516664658046, "ssim_rgb": 0.9966293860246318, "timings": { "decode_s": 1.6838960419408977 }, "steps": [ 0, 1, 2, 3, 4, 5 ], "timing_scope": "Warm decoder only; model loading excluded" }, { "label": "native-b8", "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/fp32-reference/native-b8.png", "png_sha256": "57a85569ad45d469b191470541e8cfff8d576fed6cc6bb8bd54db16e9bd2d81f", "pixel_identical": false, "mae_8bit": 0.5588849385579427, "max_error_8bit": 16, "psnr_db": 49.786187719649895, "ssim_rgb": 0.9966299016185887, "timings": { "decode_s": 2.054585292004049 }, "steps": [ 0, 1, 2, 3, 4, 5 ], "timing_scope": "Warm decoder only; model loading excluded" }, { "label": "compiled-b8", "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/fp32-reference/compiled-b8.png", "png_sha256": "57a85569ad45d469b191470541e8cfff8d576fed6cc6bb8bd54db16e9bd2d81f", "pixel_identical": false, "mae_8bit": 0.5588849385579427, "max_error_8bit": 16, "psnr_db": 49.786187719649895, "ssim_rgb": 0.9966299016185887, "timings": { "decode_s": 1.6555352921131998 }, "steps": [ 0, 1, 2, 3, 4, 5 ], "timing_scope": "Warm decoder only; model loading excluded" } ], "interpretation": "Pixel similarity to the same seeded trajectory, not a measure of prompt adherence or perceptual quality." }