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"Old BF16": 0, "Old Q8": 0, "Mixed-FP16": 0, "Mixed-Q8": 0 } }, { "backend": "vulkan", "word": "sunrise.", "python_fp32_end_s": 14.56, "shift_ms": { "FP32": 320, "Old BF16": 320, "Old Q8": 320, "Mixed-FP16": 320, "Mixed-Q8": 320 } }, { "backend": "vulkan", "word": "spare", "python_fp32_end_s": 18.8, "shift_ms": { "FP32": 80, "Old BF16": 80, "Old Q8": 80, "Mixed-FP16": 80, "Mixed-Q8": 80 } } ], "controlled_speedup_established": false, "working_memory_benchmarked": false, "tests": { "converter": { "passed": 13, "failed": 0 }, "timestamps": { "passed": 3, "failed": 0 }, "targeted_ctest": { "passed": 4, "failed": 0 }, "mixed_q8_final_server_requests": 126, "mixed_q8_final_exact_repeat_pairs": 63 }, "limitations": [ "Mixed-Q8 introduces a CPU +240 ms word-end shift on movie_offset_240_12s; old Q8 has none there.", "Mixed-FP16 has remaining CPU/CUDA timing differences; GPU FP32 itself can differ from the Python oracle.", "Native storage types may select different kernels despite exact stored F32 values.", "No corpus WER, controlled speedup, peak working-memory or RTX 5090/Metal/HIP/MUSA claims." ], "raw_artifacts": [ "outputs/phonon2-duration-investigation-20261010/", "outputs/phonon2-q8-update-20261010/" ], "diagnostics": { "encoder_frame_ms": 80, "same_python_encoder_f32_decoder_retained_tokens_exact": 166, "decoder_replay_backends": [ "cpu", "cuda", "vulkan" ], "f32_encoder_relative_l2": { "cpu": 8.7702039e-07, "cuda": 0.00053852938, "vulkan": 0.00502534112 }, "valid_encoder_rows": 350, "allocated_encoder_rows": 351, "near_tie_margins": { "period_vs_blank": 0.00357914, "duration_1_vs_2": 0.00139236 }, "original_cpu_reference_mask_frames": 2801, "dense_reference_mask_frames": 2800, "mask_only_crossover_matches_dense_word_timing_on_maintainer_clip": true } } }