{ "validation_scope": "Same final latent; decoder-only comparison. Source-generation and decoder-only timings have different scopes.", "reference": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/outputs/suite/product/native-3.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": "Native BF16 decoder", "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/outputs/suite/product/native-3.png", "png_sha256": "63684ef8ae148a35ddef02650c6aa30b4843b47c99b06cec2ea3708ef3fc2293", "pixel_identical": true, "mae_8bit": 0.0, "max_error_8bit": 0, "psnr_db": null, "ssim_rgb": 1.0, "timings": { "encode_s": 0.09756437502801418, "dit_setup_s": 1.1571008330211043, "step_0_s": 10.822453290922567, "step_1_s": 11.303021250059828, "step_2_s": 11.45283200009726, "step_3_s": 11.480994417099282, "step_4_s": 11.41636574990116, "step_5_s": 11.394194666063413, "decode_s": 3.528030874906108, "total_s": 72.77735170791857 }, "steps": [ 0, 1, 2, 3, 4, 5 ], "timing_scope": "Fresh end-to-end request" }, { "label": "Core ML CPU_AND_GPU, batch 8, contiguous bridge", "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/contiguous-b8-CPU_AND_GPU/image.png", "png_sha256": "36a7cdad88b12839d1e4cd30384ee60fafffaac52d2ba05e3be409a33a40a50a", "pixel_identical": false, "mae_8bit": 0.2054581642150879, "max_error_8bit": 7, "psnr_db": 54.674052201530415, "ssim_rgb": 0.9983190643001968, "timings": { "decode_s": 1.8162069998215884 }, "steps": [ 0, 1, 2, 3, 4, 5 ], "timing_scope": "One complete decoder pass; model loading excluded" } ], "interpretation": "Pixel similarity to the same seeded trajectory, not a measure of prompt adherence or perceptual quality." }