File size: 1,887 Bytes
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"arch_id": "qwen3-next-mtp",
"artifact_role": "small-q4-speed-test",
"base_trunk": "mlx-community/Qwen3.5-4B-MLX-4bit",
"exactness_baseline": {
"artifact": "/Users/youssof/.mtplx/qwen35_4b_final_mtp1_gate.json",
"gate": "mtp1-greedy-ar-equivalence",
"max_tokens": 16,
"matches": 1,
"scope": "greedy AR and MTP1 generated identical token sequence on the warm_code_continuation prompt",
"seed": 0,
"status": "passed",
"total": 1
},
"mtp_depth_max": 2,
"mtp_sidecar": "official Qwen/Qwen3.5-4B MTP tensors; quantization recorded in config.json",
"mtplx_version": "0.1.0-preview",
"recommended_draft_lm_head": {
"bits": 4,
"group_size": 64,
"mode": "affine"
},
"recommended_draft_sampler": {
"temperature": 0.6,
"top_k": 20,
"top_p": 0.95
},
"recommended_profile": "performance-cold",
"sampler": {
"temperature": 0.6,
"top_k": 20,
"top_p": 0.95
},
"speed_evidence": {
"acceptance_by_depth": [
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],
"accepted_drafts": 16,
"ar_tok_s": 108.4050622912913,
"artifact": "/Users/youssof/.mtplx/qwen35_4b_depth_grid_q4_body4_draftt0p6.json",
"draft_lm_head": "tied embedding reused as 4-bit affine group64 draft head",
"draft_temperature": 0.6,
"enable_thinking": false,
"generated_tokens": 48,
"mtp_depth": 2,
"mtp_tok_s": 120.05572596536466,
"note": "Qwen3.5-4B measured fastest at depth 2. Depth 3 over-drafts this small native-MTP head and can lose to AR.",
"sampler": {
"temperature": 0.6,
"top_k": 20,
"top_p": 0.95
},
"speedup_vs_ar": 1.1074734281575087
},
"verified_on": {
"hardware": "Apple Silicon local MTPLX workstation",
"machine_arch": "arm64",
"model": "Qwen3.5-4B-MTPLX-Optimized-Speed",
"timestamp": "2026-05-04T06:17:00+0100"
}
}
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