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 },
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    },
    {
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     "bulk_gib_s": 114.49,
     "small_cycles": 61.75,
     "raw_file": "evidence/backends/chainhash.zmm.run2.txt",
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 },
 "polyxor-128": {
  "EPYC9R14": {
   "status": "complete",
   "runs": [
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     "bulk_bytes_per_cycle": 19.65,
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     "small_cycles": 129.98,
     "raw_file": "evidence/backends/polyxor-128.run1.txt",
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      "11": 130.62,
      "12": 130.8,
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      "14": 130.8,
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      "16": 131.46,
      "17": 131.68,
      "18": 131.7,
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      "20": 131.4,
      "21": 131.44,
      "22": 131.46,
      "23": 131.45,
      "24": 131.27,
      "25": 131.29,
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      "28": 131.29,
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      "30": 131.27,
      "31": 131.21
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    },
    {
     "run": 2,
     "bulk_bytes_per_cycle": 19.63,
     "bulk_gib_s": 63.98,
     "small_cycles": 131.68,
     "raw_file": "evidence/backends/polyxor-128.run2.txt",
     "raw_sha256": "5171d76912de74a9e73867b65547b7d46bbf7dd7a9886ddce7945795a3919b48",
     "command": [
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      "10",
      "taskset",
      "-c",
      "8-15",
      "SMHasher3",
      "polyxor-128",
      "--test=Speed"
     ],
     "started": "2026-09-29T00:41:45.821090+00:00",
     "load1_before": 0.99,
     "load1_after": 1.0,
     "binary_sha256": "a1fc90a1cfe3d605d079a39f6bb481ddee77b11b6300897fef33ecce834e83e4",
     "small_per_length": {
      "1": 124.12,
      "2": 124.52,
      "3": 124.56,
      "4": 124.52,
      "5": 132.13,
      "6": 132.15,
      "7": 132.14,
      "8": 132.45,
      "9": 132.45,
      "10": 132.45,
      "11": 132.46,
      "12": 132.06,
      "13": 132.09,
      "14": 132.1,
      "15": 132.11,
      "16": 129.08,
      "17": 132.84,
      "18": 132.83,
      "19": 132.85,
      "20": 133.62,
      "21": 133.65,
      "22": 133.64,
      "23": 133.65,
      "24": 133.47,
      "25": 133.38,
      "26": 133.5,
      "27": 133.5,
      "28": 133.49,
      "29": 133.47,
      "30": 133.48,
      "31": 133.47
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    }
   ],
   "bulk_bytes_per_cycle": 19.65,
   "bulk_gib_s": 64.04,
   "small_cycles": 129.98,
   "bulk_selected_run": 1,
   "small_selected_run": 1,
   "aggregation": "higher bulk of two passes; independently lower small average",
   "variation": {
    "bulk_bytes_per_cycle": {
     "median": 19.64,
     "values": [
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      19.63
     ],
     "deviations_from_median_percent": [
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     ],
     "range_over_min_percent": 0.10188487009679115,
     "flag_over_15_percent": false
    },
    "small_cycles": {
     "median": 130.82999999999998,
     "values": [
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     ],
     "deviations_from_median_percent": [
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     ],
     "range_over_min_percent": 1.307893522080339,
     "flag_over_15_percent": false
    }
   },
   "bulk_run_spread_percent": 0.10188487009679115,
   "small_run_spread_percent": 1.307893522080339,
   "registered_name": "polyxor-128",
   "binary_sha256": "a1fc90a1cfe3d605d079a39f6bb481ddee77b11b6300897fef33ecce834e83e4"
  }
 },
 "meta": {
  "purpose": "ChainHash backends on Zen 4: forced ZMM, YMM and XMM entry points (chainhash_with_backend / chainhash128_with_backend with the product method chainhash128() pairs with each backend) against the run-time dispatch, at a0116ea, with the previous main 0a03c63 and PolyXOR128/XXH3-128 as same-binary controls.",
  "binary": "the reproduction build at a0116ea plus the registrations in records/chainhash/refresh-a0116ea/bench (evidence/backends/provenance.json)",
  "protocol": "nice -n 10 taskset -c 8-15; two complete passes; higher bulk, lower small; every start waits for no SMHasher3 process anywhere; overlapping runs are discarded and repeated (evidence/backends/discarded.jsonl)",
  "units": "B per TSC tick (TSC 2.600 GHz)"
 }
}