{
  "schema": "laguna-m8-current-stream-event-retrospective-summary-v1",
  "status": "exact_event_profile_stop",
  "diagnostic_only": true,
  "not_benchmark_or_submission_evidence": true,
  "run_root": "/mnt/fast-ai/llm-optimization-artifacts/laguna-s-2.1/runs/laguna-current-stream-event-f42f55690-fcc2506f7-20260725T052434Z",
  "run_root_sealed_read_only": true,
  "main_commit": "f42f5569029480b7e253c4996c188db6efe14254",
  "vllm_commit": "fcc2506f7da3a9fd142928af9275d25b9687342a",
  "kernel_commit": "4772f727590c51b72add79350b913d098cf67872",
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    "single_generate_call_per_process": true,
    "prompt_tokens_per_arm": 55,
    "completion_tokens_per_arm": 272,
    "cached_tokens_per_arm": 0,
    "finish_reason_per_arm": "length",
    "bitwise_exact_q1_graph_event": true,
    "token_ids_sha256": "ee44dfe987c199b248cfe8f752f5fa8600a34291815894c5fb6502ffd5187cee",
    "text_sha256": "d41518e5781b3adafb966c1b9a91e46d4d23b1a1ef40d8992ccde9a55920e55f"
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    "intervals_per_rank": 291,
    "graphs": 146,
    "collective_boundaries": 97,
    "attention_boundaries": 48,
    "segment_kind_order_sha256": "e5b64443ef499d8bb8b138a94ad504effeaa6434a8884ae9f885aecf12d34e1b",
    "rank_local_only": true,
    "global_critical_path_validated": false,
    "collective_cross_stream_completion_validated": false
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  "rank_total_duration_ns": {
    "0": 122850884,
    "1": 123062992,
    "2": 124614464,
    "3": 123328348
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  "selected_rank": {
    "rank": 2,
    "total_duration_ns": 124614464,
    "stream_identity": {
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      "device_type": "xpu",
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    "category_share_percent": {
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    "prior_graph_replay_host_total_median_ns": 2097430,
    "prior_graph_replay_host_total_p90_ns": 2306479,
    "pure_replay_loop_candidate_promoted": false,
    "selected_rank_graph_interval_classes": {
      "index_mod_6_0": {
        "count": 49,
        "total_ns": 30558528,
        "mean_ns": 623643
      },
      "index_mod_6_2": {
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        "total_ns": 26038480,
        "mean_ns": 531397
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      "index_mod_6_4": {
        "count": 48,
        "total_ns": 23700404,
        "mean_ns": 493758
      }
    },
    "largest_graph_interval_class_is_consistent_across_ranks": true,
    "source_verified_topology": {
      "prefix": [
        "input_embedding_graph",
        "embedding_all_reduce"
      ],
      "decoder_layers": 48,
      "intervals_per_decoder_layer": 6,
      "final_tail": "final_norm_and_downstream_graph",
      "selected_rank_repeated_graph_classes": {
        "pre_attention": {
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          "total_ns": 25393732,
          "mean_ns": 529036
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        "post_attention_local_o": {
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        "post_attention_local_mlp": {
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          "mean_ns": 627640
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      },
      "largest_repeated_graph_class": "post_attention_local_mlp",
      "single_kernel_dominance_proven": false
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  },
  "artifact_sha256": {
    "analysis": "19ce562e3da8e9bea98c23f4c411a3613e8dba9274cd288b78d6209145a1faac",
    "closure": "cc6799c044fe4ef3ce0126503d12a1feaed1007e3a468f4571866ed770cf74be",
    "identity": "85326e8350440bdea75fa7a3082144fb15d87e492c3a02ffffb527a5d8ad5539",
    "status": "30631a4768a730bccb92ef9e5cbc8dc278d2905858431c4cfe35e39df28af2ec",
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    "graph_event_driver": "1e96d275084d64d63c739f8381773177c886840bb4e5216d6456b0d9b3ce4cf2",
    "rank0_profile": "8df429c477f0b474da10647d83ef2601486056c2509ead82a28b4a701a61ad2b",
    "rank1_profile": "119cc6317249a8389f306123151fa05e19d55eb360c02196731044cfdbc5bbe2",
    "rank2_profile": "4d39a622ed5ce7d5f5e02adc0f820fcdcd0ea61991f85ef35f445ec099895a79",
    "rank3_profile": "38951b2f52b4d4653b105a1b35950d7922ee610668d467686780726e4b217273"
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  "independent_read_only_audit": {
    "status": "approved",
    "closure_hashes_recomputed": true,
    "exactness_recomputed": true,
    "slowest_rank_and_category_arithmetic_recomputed": true,
    "caveat": "rank-local current-stream diagnostic; no global TP4 critical-path or XCCL cross-stream completion proof"
  },
  "decision": {
    "largest_kind_on_selected_rank": "graph",
    "frozen_analyzer_next_action": "replay_plan_submission_research_only",
    "post_run_source_audit_result": "pure replay submission lane closed as low ceiling",
    "next_action": "inspect M=8 local-MoE workspace and expert W1/W2 dispatch headroom, then isolate one arithmetic-identical device-kernel lever",
    "authorize_uninstrumented_endpoint": false,
    "authorize_localmaxxing_submission": false
  }
}