Megatron fused

{
  "run": {
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    "spec": {
      "status": "passed",
      "timing": {
        "latencyNs": {
          "median": 5412109
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        "primaryStatistic": "median"
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      "observedAt": "2026-06-15T22:13:03.000Z",
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      "sourceNative": {
        "source": "liger-kernel-bench",
        "metrics": {
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        "benchmark": "megatron_cross_entropy/backward",
        "externalId": "megatron_cross_entropy/backward/megatron-unfused/nvidia-h100-80gb-hbm3/batch4-seq2048-vocab32768-bf16/2026-06-15-22-13-03"
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      "environmentDigest": "sha256:2750ae381d6de582f1eb6b9008e0987463d19ede8af127d97d76c5ae09121393",
      "implementationDigest": "sha256:d9055243d96f775b3343dd8a494ac60fd04f4df9fdd5506871ddbce7ad70a00c"
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    "metadata": {
      "name": "liger-megatron-cross-entropy-backward-megatron-unfused-nvidia-h100-80gb-hbm3-batch4-seq2048-vocab327",
      "title": "Vocab-parallel cross-entropy, Megatron layout · megatron-unfused · backward",
      "labels": {
        "liger_version": "0.8.0"
      }
    },
    "apiVersion": "kernelindex.dev/v1alpha1"
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    "kind": "BenchmarkProtocol",
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        "repository": "https://github.com/linkedin/Liger-Kernel"
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        "timer": "cuda_events",
        "primaryStatistic": "median"
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      "comparability": {
        "notes": "Timed: the backward pass of the module output given a random upstream gradient, via triton.testing.do_bench with quantiles 0.5/0.2/0.8 (median with p20/p80 spread). The upstream CSV records no CUDA, driver, or torch version; the Liger release rides each run's labels. Comparable only within one kernel, workload, timed pass, and GPU.",
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        "formFactor": "80GB HBM3",
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      "title": "Liger benchmark host · H100 80GB HBM3"
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