{
  "schemaVersion": 1,
  "createdUtc": "2026-08-26T16:55:41.044394+00:00",
  "experiment": "UD-Q2_K_XL-Unsloth",
  "status": "complete",
  "models": {
    "native": {
      "path": "<REPO_ROOT>/Qwen3.8-27B-Quark-AWQ-MXFP4-native.gguf",
      "bytes": 18892854880,
      "decimalGB": 18.89285488,
      "GiB": 17.595342248678207,
      "sha256": "1a37c48570811215fa1a9d2a493211293ca375d17287771e85d28642946e88fc"
    },
    "candidate": {
      "path": "<REPO_ROOT>/Qwen3.8-27B-Quark-MXFP4-UD-Q2_K_XL-Unsloth.gguf",
      "bytes": 9809893280,
      "decimalGB": 9.80989328,
      "GiB": 9.136175066232681,
      "sha256": "9b899d16649813748689f2b99407b299cc9eeeae66289cf06066b050f10f3675"
    },
    "savings": {
      "bytes": 9082961600,
      "decimalGB": 9.0829616,
      "GiB": 8.459167182445526,
      "percentOfNative": 48.07617301721422
    }
  },
  "tensorAudit": {
    "verificationPassed": true,
    "tensorCount": 866,
    "changedTensorCount": 369,
    "unchangedPayloadsVerifiedByteExact": 497,
    "nativeMxfp4PreservedCount": 137,
    "nativeMxfp4TensorCount": 496,
    "effectiveTypeCounts": {
      "F32": 360,
      "IQ1_M": 1,
      "IQ1_S": 20,
      "IQ2_S": 67,
      "IQ2_XS": 34,
      "IQ2_XXS": 48,
      "IQ3_S": 57,
      "IQ3_XXS": 112,
      "MXFP4": 137,
      "Q2_K": 16,
      "Q3_K": 5,
      "Q4_K": 1,
      "Q6_K": 6,
      "Q8_0": 2
    }
  },
  "benchmark": {
    "domain": "general",
    "tokenTarget": 32768,
    "chunks": 15,
    "context": 2048,
    "threads": 4,
    "gpuLayers": 0,
    "gpuVisible": false,
    "nativeStandalonePpl": 5.8033,
    "nativeStandalonePplError": 0.11146,
    "paired": {
      "candidatePpl": 6.280284,
      "basePpl": 5.801511,
      "pplDifference": 0.478773,
      "pplRatio": 1.082526,
      "logPplRatio": 0.079297,
      "correlationPercent": 97.36
    },
    "kld": {
      "mean": 0.111015,
      "standardError": 0.001835,
      "maximum": 5.839242,
      "p99_9": 2.934114,
      "p99": 0.993161,
      "p95": 0.397965,
      "p90": 0.247337,
      "median": 0.052314
    },
    "tokenProbability": {
      "meanDeltaPercent": -2.07,
      "rmsDeltaPercent": 9.66,
      "sameTopPercent": 86.087
    },
    "scope": {
      "languageLogits": true,
      "visionProjectorEvaluated": false,
      "mtpTensorsEvaluated": false,
      "note": "llama-perplexity logged block 64 MTP tensors as unused; ordinary KLD primarily measures the changed token embedding and output tensors"
    }
  },
  "imatrixApplicability": {
    "supplied": true,
    "label": "Unsloth",
    "sha256": "0ee5b10bd0c2fa2127c6f4b43dbfe1efd71e383b63217af9dade1de36599f1c1",
    "entries": 496,
    "changedTensorsWithEntries": 359,
    "changedTensorCount": 369,
    "note": "Coverage is inferred from llama.cpp's per-conversion missing-weight messages; tensors present in the imatrix are supplied to the selected quantizer."
  },
  "artifacts": {
    "corpus": {
      "path": "<REPO_ROOT>/Experiments/MQ-IQ4_XS_1-Generic/benchmark/_ppl_corpora/ppl_corpus_general.txt",
      "bytes": 131514,
      "sha256": "5d38d98dce15f54e9a1a926187b6058e65cd8b3dd9b5cc2729b0a5fd249228b0"
    },
    "referenceLogits": {
      "path": "<REPO_ROOT>/Experiments/MQ-IQ4_XS_1-Generic/benchmark/native-reference/logits/kld_logits_general.bin",
      "bytes": 7621186460,
      "sha256": "604db2df7253cba18a6c0a569ed819ee3065d4ac20cd94ae72f4329e7bba8516"
    },
    "nativeLog": {
      "path": "<REPO_ROOT>/Experiments/MQ-IQ4_XS_1-Generic/benchmark/native-reference/perplexity_general.log",
      "sha256": "bade3445565a354969f7515045507b854bee83f6695eec7490b70eab9c6eebc2"
    },
    "candidateLog": {
      "path": "<REPO_ROOT>/Experiments/UD-Q2_K_XL-Unsloth/benchmark/candidate/perplexity_general.log",
      "sha256": "245d6d9f1551cc03b74f98e7c20fb8372098c7e077fd71d0f517f48cc7b47a35"
    },
    "quantizationLog": {
      "path": "<REPO_ROOT>/Experiments/UD-Q2_K_XL-Unsloth/quantization.log",
      "sha256": "99260ff506669dcc6eae299f00260c2c4ceebbc61c6c204a72a0dc7b696c35d8"
    }
  }
}