Add Frontier fidelity envelope campaign
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runs/frontier-fidelity-envelope-v1/smoke-report.md
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runs/frontier-fidelity-envelope-v1/smoke-report.md
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# Frontier measured-collective smoke
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日期:2026-07-17。设备:local CPU(Frontier simulation only)。Frontier commit:`d9cfeb6d8791fbf2f295dd9744c56a666171776e`,沿用既有 dirty compatibility patch set;A2 额外 patch SHA256 为 `35cc6be846589faf8cb5fa3ce5fdfe0aee8f086ba7dbb5dbcdc677148f19a3c8`。
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固定 cell:Qwen3-30B-A3B BF16 profile-v2,`TP2/MNS8/MBT8192`,`ISL=2048/OSL=1`,64 requests,8 req/s,prefix off,TTFT SLO 1256 ms。
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| variant | CC path for 2048-token payload | TTFT p50/p95/max (ms) | pass rate |
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|---|---|---:|---:|
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| A0 analytical | analytical | 122.2406276 | 1.0 |
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| A1 native Vidur | `4,194,304 > 100,000` elements,lookup miss 后 analytical fallback | 122.2406276 | 1.0 |
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| A2 measured + direct miss | measured random-forest estimator;exact payload memoized | 120.8898909 | 1.0 |
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A1 与 A0 的所有 TTFT 数值完全一致,验证 measured CSV 虽成功加载和训练,但没有参与该 payload 的 prediction。A2 model 对该 payload 的预测为 `0.09877793 ms`;同一个 TP2/2048 row 的 measured critical-path median 是 `0.10891200 ms`。A2 相对 A1 的 E2E delta 为 `-1.3507367 ms`(`-1.105%`),与每层多次 collective 的累计量级一致,因此通过“execution path 必须变化”的 smoke gate。
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这个 smoke 只证明 profile consumption;不证明 ranking 已恢复。下一步必须运行完整 A2 TP×MNS surface,并与已冻结 real capacity比较。
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