{
 "date": "2026-10-21",
 "purpose": "Test whether the role path's combine changes are AFD-specific by applying them to Masked DeepEP's generic instantiation (scratch audit build: AFDEP_AUDIT_GENERIC passes upstream expected top-k ceil(k/R), AFDEP_COMBINE_MAX_UNROLL and AFDEP_AUDIT_SPLIT to the generic combine; not shipped)",
 "scope": "4 x H100, 2 Attention + 2 FFN, E128 top-k 8, capacity 2048, BF16, graphs, 24 SMs, random routing; three fresh-process repeats",
 "arms": {
  "masked": "upstream Masked",
  "masked_u2": "Masked + unroll 2",
  "masked_split": "Masked + split combine (unroll 4)",
  "masked_u2_split": "Masked + unroll 2 + split combine",
  "afd": "role path at 0d33a60~ (E=ceil(k/F)=4, unroll 2, split)",
  "afd_e2": "role path with upstream E=2 (unroll 2, split)",
  "afd_nosplit": "role path without split"
 },
 "screens": [
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      "geomean_change_pct": -47.58,
      "repeats_faster": 3
     },
     "afd_nosplit": {
      "median_us": 25.87,
      "geomean_change_pct": -32.37,
      "repeats_faster": 3
     }
    },
    {
     "tokens": 8,
     "masked": {
      "median_us": 47.77,
      "geomean_change_pct": 0.0,
      "repeats_faster": 0
     },
     "masked_u2": {
      "median_us": 41.08,
      "geomean_change_pct": -12.77,
      "repeats_faster": 3
     },
     "masked_split": {
      "median_us": 34.66,
      "geomean_change_pct": -26.98,
      "repeats_faster": 3
     },
     "masked_u2_split": {
      "median_us": 30.09,
      "geomean_change_pct": -36.0,
      "repeats_faster": 3
     },
     "afd": {
      "median_us": 22.53,
      "geomean_change_pct": -52.48,
      "repeats_faster": 3
     },
     "afd_e2": {
      "median_us": 21.81,
      "geomean_change_pct": -53.93,
      "repeats_faster": 3
     },
     "afd_nosplit": {
      "median_us": 32.11,
      "geomean_change_pct": -31.15,
      "repeats_faster": 3
     }
    },
    {
     "tokens": 32,
     "masked": {
      "median_us": 55.09,
      "geomean_change_pct": 0.0,
      "repeats_faster": 0
     },
     "masked_u2": {
      "median_us": 46.53,
      "geomean_change_pct": -16.21,
      "repeats_faster": 3
     },
     "masked_split": {
      "median_us": 37.44,
      "geomean_change_pct": -32.05,
      "repeats_faster": 3
     },
     "masked_u2_split": {
      "median_us": 32.46,
      "geomean_change_pct": -41.2,
      "repeats_faster": 3
     },
     "afd": {
      "median_us": 24.52,
      "geomean_change_pct": -55.58,
      "repeats_faster": 3
     },
     "afd_e2": {
      "median_us": 23.55,
      "geomean_change_pct": -57.33,
      "repeats_faster": 3
     },
     "afd_nosplit": {
      "median_us": 37.06,
      "geomean_change_pct": -32.98,
      "repeats_faster": 3
     }
    },
    {
     "tokens": 128,
     "masked": {
      "median_us": 68.85,
      "geomean_change_pct": 0.0,
      "repeats_faster": 0
     },
     "masked_u2": {
      "median_us": 55.18,
      "geomean_change_pct": -19.93,
      "repeats_faster": 3
     },
     "masked_split": {
      "median_us": 56.07,
      "geomean_change_pct": -18.66,
      "repeats_faster": 3
     },
     "masked_u2_split": {
      "median_us": 46.53,
      "geomean_change_pct": -32.42,
      "repeats_faster": 3
     },
     "afd": {
      "median_us": 44.65,
      "geomean_change_pct": -35.35,
      "repeats_faster": 3
     },
     "afd_e2": {
      "median_us": 40.03,
      "geomean_change_pct": -41.97,
      "repeats_faster": 3
     },
     "afd_nosplit": {
      "median_us": 49.25,
      "geomean_change_pct": -28.56,
      "repeats_faster": 3
     }
    },
    {
     "tokens": 512,
     "masked": {
      "median_us": 136.08,
      "geomean_change_pct": 0.0,
      "repeats_faster": 0
     },
     "masked_u2": {
      "median_us": 111.09,
      "geomean_change_pct": -18.38,
      "repeats_faster": 3
     },
     "masked_split": {
      "median_us": 136.79,
      "geomean_change_pct": 0.44,
      "repeats_faster": 0
     },
     "masked_u2_split": {
      "median_us": 111.52,
      "geomean_change_pct": -18.05,
      "repeats_faster": 3
     },
     "afd": {
      "median_us": 104.08,
      "geomean_change_pct": -23.59,
      "repeats_faster": 3
     },
     "afd_e2": {
      "median_us": 104.31,
      "geomean_change_pct": -23.36,
      "repeats_faster": 3
     },
     "afd_nosplit": {
      "median_us": 103.67,
      "geomean_change_pct": -23.96,
      "repeats_faster": 3
     }
    },
    {
     "tokens": 2048,
     "masked": {
      "median_us": 391.84,
      "geomean_change_pct": 0.0,
      "repeats_faster": 0
     },
     "masked_u2": {
      "median_us": 340.97,
      "geomean_change_pct": -13.05,
      "repeats_faster": 3
     },
     "masked_split": {
      "median_us": 387.11,
      "geomean_change_pct": -1.3,
      "repeats_faster": 3
     },
     "masked_u2_split": {
      "median_us": 341.39,
      "geomean_change_pct": -12.94,
      "repeats_faster": 3
     },
     "afd": {
      "median_us": 332.57,
      "geomean_change_pct": -15.21,
      "repeats_faster": 3
     },
     "afd_e2": {
      "median_us": 333.78,
      "geomean_change_pct": -14.82,
      "repeats_faster": 3
     },
     "afd_nosplit": {
      "median_us": 332.52,
      "geomean_change_pct": -15.22,
      "repeats_faster": 3
     }
    }
   ]
  }
 ],
 "conclusion": "Unroll 2 and the split combine speed up Masked by up to 20% and 32% on their own: they are generic DeepEP changes, not AFD properties. The AFD expected top-k (4 vs upstream 2) is mixed (better at H2048 512-2048 tokens, worse at H4096 8-128 tokens). All three are removed from the role path."
}