{
 "units": "round-trip µs (dispatch + combine), communication only, CUDA graphs; lower is better",
 "paired_ratio": "per series and token count, the geometric mean over repeats of the per-repeat ratio of that series' process median to the control series' (paired fresh processes); series values are medians",
 "in_node_h100": {
  "setup": "4 × H100 in one NVLink domain, E128 / top-8 (E96 for 1A:3F), capacity 2,048, BF16 unless noted, 24 transport SMs; median of three fresh-process repeats, max over Attention ranks; native tree bd4db4da (sections 1–4, before sections 10 and 13–16)",
  "source": "docs/design.md (Result), record validation-result.json",
  "layouts": {
   "2A2F, hidden 2,048, random routing": {
    "tokens": [
     1,
     8,
     32,
     128,
     512,
     2048
    ],
    "series": {
     "afdEP-comm": [
      20.7,
      24.8,
      26.3,
      35.3,
      70.6,
      192.7
     ],
     "FastAFD's DeepEP M2N": [
      31.7,
      34.4,
      36.0,
      44.3,
      78.7,
      201.0
     ]
    },
    "control": "FastAFD's DeepEP M2N",
    "paired_ratio": {
     "afdEP-comm": [
      0.654,
      0.709,
      0.735,
      0.798,
      0.896,
      0.959
     ],
     "FastAFD's DeepEP M2N": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ]
    }
   },
   "2A2F, hidden 4,096, random routing": {
    "tokens": [
     1,
     8,
     32,
     128,
     512,
     2048
    ],
    "series": {
     "afdEP-comm": [
      28.4,
      39.2,
      46.3,
      61.5,
      127.3,
      383.2
     ],
     "FastAFD's DeepEP M2N": [
      39.1,
      47.9,
      55.7,
      68.7,
      136.2,
      392.6
     ]
    },
    "control": "FastAFD's DeepEP M2N",
    "paired_ratio": {
     "afdEP-comm": [
      0.728,
      0.811,
      0.816,
      0.897,
      0.936,
      0.976
     ],
     "FastAFD's DeepEP M2N": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ]
    }
   },
   "2A2F, hidden 2,048, skew routing": {
    "tokens": [
     1,
     8,
     32,
     128,
     512,
     2048
    ],
    "series": {
     "afdEP-comm": [
      24.1,
      25.7,
      29.5,
      41.2,
      88.7,
      269.9
     ],
     "FastAFD's DeepEP M2N": [
      34.3,
      35.7,
      38.9,
      50.1,
      95.9,
      274.1
     ]
    },
    "control": "FastAFD's DeepEP M2N",
    "paired_ratio": {
     "afdEP-comm": [
      0.705,
      0.724,
      0.759,
      0.825,
      0.924,
      0.985
     ],
     "FastAFD's DeepEP M2N": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ]
    }
   },
   "3A:1F, hidden 2,048, random routing": {
    "tokens": [
     1,
     8,
     32,
     128,
     512,
     2048
    ],
    "series": {
     "afdEP-comm": [
      24.8,
      27.4,
      33.0,
      45.9,
      109.4,
      367.8
     ],
     "FastAFD's DeepEP M2N": [
      36.4,
      38.6,
      44.8,
      55.8,
      119.5,
      372.1
     ]
    },
    "control": "FastAFD's DeepEP M2N",
    "paired_ratio": {
     "afdEP-comm": [
      0.686,
      0.706,
      0.735,
      0.825,
      0.916,
      0.989
     ],
     "FastAFD's DeepEP M2N": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ]
    }
   },
   "1A:3F, hidden 2,048, random routing": {
    "tokens": [
     1,
     8,
     32,
     128,
     512,
     2048
    ],
    "series": {
     "afdEP-comm": [
      19.9,
      21.5,
      23.1,
      29.4,
      59.6,
      188.3
     ],
     "FastAFD's DeepEP M2N": [
      30.5,
      31.3,
      32.8,
      39.7,
      67.7,
      197.7
     ]
    },
    "control": "FastAFD's DeepEP M2N",
    "paired_ratio": {
     "afdEP-comm": [
      0.658,
      0.687,
      0.707,
      0.751,
      0.878,
      0.953
     ],
     "FastAFD's DeepEP M2N": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ]
    }
   },
   "2A2F FP8, hidden 2,048, random routing": {
    "tokens": [
     1,
     8,
     32,
     128,
     512,
     2048
    ],
    "series": {
     "afdEP-comm": [
      21.3,
      25.9,
      26.8,
      34.5,
      62.5,
      159.1
     ],
     "FastAFD's DeepEP M2N": [
      32.3,
      35.6,
      36.7,
      43.5,
      71.8,
      167.8
     ]
    },
    "control": "FastAFD's DeepEP M2N",
    "paired_ratio": {
     "afdEP-comm": [
      0.659,
      0.722,
      0.732,
      0.794,
      0.871,
      0.948
     ],
     "FastAFD's DeepEP M2N": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ]
    }
   }
  }
 },
 "in_node_h200": {
  "setup": "8 × H200 in one NVLink domain (one pod), BF16, hidden 2048, top-8 of 128 experts, capacity 2,048, 24 SMs; 2 fresh processes per arm, max over Attention ranks; native tree 958652a3",
  "source": "docs/validation-h200-screens.json",
  "layouts": {
   "6A:2F": {
    "tokens": [
     1,
     8,
     32,
     128,
     512,
     2048
    ],
    "series": {
     "afdEP-comm": [
      24.3,
      29.3,
      35.5,
      53.2,
      152.0,
      502.0
     ],
     "FastAFD's DeepEP M2N": [
      32.2,
      38.1,
      43.7,
      61.2,
      157.9,
      507.9
     ]
    },
    "digests": {
     "afdEP-comm": [
      "958652a3"
     ],
     "FastAFD's DeepEP M2N": [
      "958652a3"
     ]
    },
    "screen": "xn-innode-6a2f",
    "repeats": 2,
    "control": "afdEP-comm",
    "paired_ratio": {
     "afdEP-comm": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ],
     "FastAFD's DeepEP M2N": [
      1.32318,
      1.30183,
      1.23211,
      1.15057,
      1.03901,
      1.01174
     ]
    }
   },
   "7A:1F": {
    "tokens": [
     1,
     8,
     32,
     128,
     512,
     2048
    ],
    "series": {
     "afdEP-comm": [
      23.8,
      27.2,
      34.1,
      70.3,
      202.0,
      736.8
     ],
     "FastAFD's DeepEP M2N": [
      39.3,
      46.4,
      53.4,
      97.3,
      244.6,
      847.4
     ]
    },
    "digests": {
     "afdEP-comm": [
      "958652a3"
     ],
     "FastAFD's DeepEP M2N": [
      "958652a3"
     ]
    },
    "screen": "xn-innode-7a1f",
    "repeats": 2,
    "control": "afdEP-comm",
    "paired_ratio": {
     "afdEP-comm": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ],
     "FastAFD's DeepEP M2N": [
      1.65242,
      1.70311,
      1.56273,
      1.38411,
      1.21041,
      1.15007
     ]
    }
   },
   "4A:4F": {
    "tokens": [
     1,
     8,
     32,
     128,
     512,
     2048
    ],
    "series": {
     "afdEP-comm": [
      24.3,
      26.6,
      27.8,
      39.6,
      96.0,
      296.3
     ],
     "FastAFD's DeepEP M2N": [
      31.1,
      35.1,
      36.1,
      47.4,
      102.8,
      302.9
     ]
    },
    "digests": {
     "afdEP-comm": [
      "958652a3"
     ],
     "FastAFD's DeepEP M2N": [
      "958652a3"
     ]
    },
    "screen": "xn-innode-4a4f",
    "repeats": 2,
    "control": "afdEP-comm",
    "paired_ratio": {
     "afdEP-comm": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ],
     "FastAFD's DeepEP M2N": [
      1.27776,
      1.32076,
      1.30022,
      1.19758,
      1.07134,
      1.02214
     ]
    }
   }
  }
 },
 "cross_node": {
  "setup": "H200 joined by InfiniBand (NCCL GIN), FP8, hidden 2048, top-8 of 128 experts, capacity 2,048, 24 SMs; 2 fresh processes per arm, max over Attention ranks; native tree 958652a3",
  "source": "docs/validation-h200-screens.json",
  "layouts": {
   "11:1, 12 single-role domains (12 × 2 H200)": {
    "tokens": [
     1,
     8,
     16,
     32,
     64,
     128
    ],
    "series": {
     "afdEP-comm": [
      236.1,
      264.9,
      272.7,
      287.3,
      329.9,
      473.1
     ],
     "FastAFD's DeepEP M2N": [
      339.4,
      354.3,
      352.2,
      361.8,
      399.7,
      494.5
     ]
    },
    "digests": {
     "afdEP-comm": [
      "958652a3"
     ],
     "FastAFD's DeepEP M2N": [
      "958652a3"
     ]
    },
    "screen": "xn-pure-f2",
    "repeats": 2,
    "control": "afdEP-comm",
    "paired_ratio": {
     "afdEP-comm": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ],
     "FastAFD's DeepEP M2N": [
      1.43829,
      1.33772,
      1.29203,
      1.25955,
      1.21199,
      1.04534
     ]
    }
   },
   "5:1, 6 single-role domains (6 × 4 H200)": {
    "tokens": [
     1,
     8,
     32,
     128,
     512
    ],
    "series": {
     "afdEP-comm": [
      137.8,
      155.3,
      165.0,
      235.1,
      604.8
     ],
     "FastAFD's DeepEP M2N": [
      185.4,
      193.6,
      210.7,
      277.9,
      636.0
     ]
    },
    "digests": {
     "afdEP-comm": [
      "958652a3"
     ],
     "FastAFD's DeepEP M2N": [
      "958652a3"
     ]
    },
    "screen": "xn-k4-dom-f4",
    "repeats": 2,
    "control": "afdEP-comm",
    "paired_ratio": {
     "afdEP-comm": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ],
     "FastAFD's DeepEP M2N": [
      1.34549,
      1.24704,
      1.27702,
      1.18176,
      1.05159
     ]
    }
   },
   "11:1, mixed-role FFN node (3 × 8 H200)": {
    "tokens": [
     1,
     8,
     16,
     32,
     64,
     128
    ],
    "series": {
     "afdEP-comm": [
      166.8,
      189.7,
      200.4,
      214.5,
      230.7,
      257.7
     ],
     "FastAFD's DeepEP M2N": [
      168.9,
      189.9,
      201.0,
      213.9,
      228.1,
      255.6
     ]
    },
    "digests": {
     "afdEP-comm": [
      "958652a3"
     ],
     "FastAFD's DeepEP M2N": [
      "958652a3"
     ]
    },
    "screen": "xn-base-f2",
    "repeats": 2,
    "control": "afdEP-comm",
    "paired_ratio": {
     "afdEP-comm": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ],
     "FastAFD's DeepEP M2N": [
      1.01326,
      1.00119,
      1.00293,
      0.99732,
      0.98867,
      0.99196
     ]
    }
   },
   "11:1, mixed-role FFN domain (6 × 4 H200)": {
    "tokens": [
     1,
     8,
     32,
     128,
     512
    ],
    "series": {
     "afdEP-comm": [
      212.1,
      235.4,
      265.0,
      333.5,
      763.8
     ],
     "FastAFD's DeepEP M2N": [
      211.3,
      235.7,
      264.6,
      332.4,
      760.4
     ]
    },
    "digests": {
     "afdEP-comm": [
      "958652a3"
     ],
     "FastAFD's DeepEP M2N": [
      "958652a3"
     ]
    },
    "screen": "xn-k4-mixed-f2",
    "repeats": 2,
    "control": "afdEP-comm",
    "paired_ratio": {
     "afdEP-comm": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ],
     "FastAFD's DeepEP M2N": [
      0.99594,
      1.00139,
      0.99844,
      0.99687,
      0.9956
     ]
    }
   }
  }
 },
 "cross_node_proposal": {
  "setup": "H200 joined by InfiniBand (NCCL GIN), FP8, hidden 2048, top-8 of 128 experts, capacity 2,048, 24 SMs; 2 fresh processes per arm, max over Attention ranks; the dense directional protocol of 1.0.0 and the union hybrid on 958652a3; the sparse and mixed-role protocols on the tree each dataset's digests name (64 experts at 23:1)",
  "in_node_setup": "one NVLink domain of 8 × H200 (one pod), BF16, hidden 2048, top-8 of 128 experts, capacity 2,048, 24 SMs; 2 fresh processes per arm, max over Attention ranks",
  "sparse_11to1": {
   "all_three": {
    "tokens": [
     1,
     8,
     16,
     32,
     64,
     128,
     256,
     512
    ],
    "series": {
     "Dense directional (1.0.0)": [
      231.5,
      259.5,
      266.3,
      285.0,
      320.9,
      461.0,
      712.4,
      1220.1
     ],
     "Sparse directional": [
      73.8,
      86.2,
      100.4,
      140.5,
      235.1,
      428.1,
      691.2,
      1221.1
     ]
    },
    "digests": {
     "Dense directional (1.0.0)": [
      "958652a3"
     ],
     "Sparse directional": [
      "200944ce"
     ]
    },
    "screen": "xn-final-f2",
    "repeats": 2,
    "control": "Dense directional (1.0.0)",
    "paired_ratio": {
     "Dense directional (1.0.0)": [
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0,
      1.0
     ],
     "Sparse directional": [
      0.31888,
      0.33199,
      0.37682,
      0.49315,
      0.73275,
      0.92883,
      0.9703,
      1.0008
     ]
    }
   },
   "baseline_unpaired": {
    "tokens": [
     1,
     8,
     16,
     32,
     64,
     128
    ],
    "series": {
     "FastAFD's DeepEP M2N": [
      339.4,
      354.3,
      352.2,
      361.8,
      399.7,
      494.5
     ]
    },
    "digests": {
     "FastAFD's DeepEP M2N": [
      "958652a3"
     ]
    },
    "screen": "xn-pure-f2",
    "repeats": 2
   },
   "parts": {
    "stagger": {
     "tokens": [
      1,
      8,
      16,
      32,
      64,
      128
     ],
     "series": {
      "Dense directional (1.0.0)": [
       231.3,
       259.9,
       266.8,
       285.2,
       321.4,
       460.7
      ],
      "Stagger only": [
       202.7,
       215.0,
       225.9,
       260.8,
       323.5,
       470.8
      ],
      "Sparse dispatch only": [
       153.1,
       183.8,
       194.7,
       221.5,
       277.6,
       441.0
      ],
      "Stagger + sparse dispatch": [
       131.0,
       144.3,
       154.2,
       197.9,
       280.8,
       452.3
      ]
     },
     "digests": {
      "Dense directional (1.0.0)": [
       "958652a3"
      ],
      "Stagger only": [
       "c301de5b"
      ],
      "Sparse dispatch only": [
       "c301de5b"
      ],
      "Stagger + sparse dispatch": [
       "c301de5b"
      ]
     },
     "screen": "xn-sparse-f2",
     "repeats": 2,
     "control": "Dense directional (1.0.0)",
     "paired_ratio": {
      "Dense directional (1.0.0)": [
       1.0,
       1.0,
       1.0,
       1.0,
       1.0,
       1.0
      ],
      "Stagger only": [
       0.87618,
       0.82718,
       0.84667,
       0.91458,
       1.00662,
       1.0219
      ],
      "Sparse dispatch only": [
       0.66198,
       0.70743,
       0.72969,
       0.77654,
       0.86384,
       0.95717
      ],
      "Stagger + sparse dispatch": [
       0.56611,
       0.55516,
       0.57789,
       0.69379,
       0.87362,
       0.98171
      ]
     }
    },
    "combine": {
     "tokens": [
      1,
      8,
      16,
      32,
      64,
      128
     ],
     "series": {
      "Dense directional (1.0.0)": [
       231.7,
       260.0,
       266.2,
       285.1,
       321.1,
       460.9
      ],
      "Sparse combine only": [
       226.0,
       255.7,
       264.8,
       284.5,
       320.4,
       460.3
      ],
      "Sparse dispatch + combine": [
       151.5,
       180.8,
       194.0,
       221.1,
       276.5,
       440.9
      ],
      "Sparse directional": [
       74.3,
       86.3,
       100.4,
       140.8,
       235.5,
       428.0
      ]
     },
     "digests": {
      "Dense directional (1.0.0)": [
       "958652a3"
      ],
      "Sparse combine only": [
       "841bc731"
      ],
      "Sparse dispatch + combine": [
       "841bc731"
      ],
      "Sparse directional": [
       "841bc731"
      ]
     },
     "screen": "xn-combine-f2",
     "repeats": 2,
     "control": "Dense directional (1.0.0)",
     "paired_ratio": {
      "Dense directional (1.0.0)": [
       1.0,
       1.0,
       1.0,
       1.0,
       1.0,
       1.0
      ],
      "Sparse combine only": [
       0.97567,
       0.98351,
       0.99462,
       0.99791,
       0.9979,
       0.99871
      ],
      "Sparse dispatch + combine": [
       0.65387,
       0.69539,
       0.72887,
       0.7756,
       0.86134,
       0.95673
      ],
      "Sparse directional": [
       0.32088,
       0.33191,
       0.37702,
       0.49388,
       0.73354,
       0.92875
      ]
     }
    },
    "stagger_bound": {
     "tokens": [
      1,
      8,
      16,
      32,
      48,
      64,
      128
     ],
     "series": {
      "Dense directional (1.0.0)": [
       231.6,
       260.2,
       266.3,
       285.0,
       300.1,
       321.5,
       460.7
      ],
      "Sparse dispatch + combine": [
       148.3,
       179.8,
       193.4,
       221.2,
       247.7,
       277.3,
       441.0
      ],
      "+ stagger up to 48 tokens": [
       74.2,
       86.2,
       100.2,
       140.6,
       188.8,
       277.5,
       440.8
      ],
      "+ stagger at every size": [
       74.0,
       86.3,
       100.4,
       140.6,
       188.5,
       236.1,
       428.6
      ]
     },
     "digests": {
      "Dense directional (1.0.0)": [
       "958652a3"
      ],
      "Sparse dispatch + combine": [
       "0c22f278"
      ],
      "+ stagger up to 48 tokens": [
       "0c22f278"
      ],
      "+ stagger at every size": [
       "0c22f278"
      ]
     },
     "screen": "xn-thresh-f2",
     "repeats": 2,
     "control": "Dense directional (1.0.0)",
     "paired_ratio": {
      "Dense directional (1.0.0)": [
       1.0,
       1.0,
       1.0,
       1.0,
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   "Three Attention domains, 2F:6A (4 × 2 H200)": {
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    },
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   "5:1, 6 single-role domains (6 × 4 H200)": {
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     512
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      97.7,
      229.4,
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      193.6,
      210.7,
      277.9,
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    "screen": "xn-k4-dom-f4",
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    "paired_ratio": {
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     "FastAFD's DeepEP M2N": [
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  "done_witness_cost": {
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    32,
    128,
    512
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     155.5,
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     235.2,
     604.3
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    "Sparse, earlier witness on channel 0 only (unsafe)": [
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     77.3,
     97.6,
     229.5,
     605.0
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    "Sparse, done witness after every forward warp": [
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     82.3,
     97.7,
     226.8,
     603.8
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   },
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     0.59333,
     0.96417,
     0.99919
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   }
  },
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     8,
     32,
     128,
     512
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    "series": {
     "afdEP-comm": [
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      235.4,
      265.0,
      333.5,
      763.8
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     "Cross-node: mixed-role directional": [
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      189.0,
      207.5,
      284.1,
      701.6
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     "FastAFD's DeepEP M2N": [
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      235.7,
      264.6,
      332.4,
      760.4
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    },
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     "Cross-node: mixed-role directional": [
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     "FastAFD's DeepEP M2N": [
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    },
    "screen": "xn-k4-mixed-f2",
    "repeats": 2,
    "control": "afdEP-comm",
    "paired_ratio": {
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     "FastAFD's DeepEP M2N": [
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    }
   },
   "23:1, 1F:23A, 64 experts (6 × 4 H200)": {
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     128,
     512
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      319.4,
      353.4,
      437.5,
      1082.7
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      267.6,
      294.0,
      383.4,
      1015.5
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      319.6,
      352.9,
      436.1,
      1080.3
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    },
    "screen": "xn-k4-mixed-f1-e64",
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     "FastAFD's DeepEP M2N": [
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      1.00057,
      0.99847,
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      0.99778
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    }
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  },
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     32,
     128,
     512,
     2048
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      152.0,
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      53.2,
      151.9,
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     "Tree 200944ce, sparse parts on": [
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    },
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     "Tree 200944ce, sparse parts on": [
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   },
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      202.0,
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     "Tree 200944ce, sparse parts on": [
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    },
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   },
   "4A:4F": {
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     "Tree 200944ce, sparse parts on": [
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      96.1,
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    },
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    },
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    "repeats": 2,
    "control": "afdEP-comm 1.0.0",
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    }
   }
  }
 }
}