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RMSNorm, Megatron layout · seq = 4096 · batch = 1 · hidden = 4096 · bf16 · run 01a0202b-2410…
●passedReported evidence
Primary measurement
32.5µsmedian

Rank 2 in its comparison group · source-native comparison · observed 2026-06-10

Compare with #1 →

ms 20 0.03208959847688675 · ms 50 0.03248000144958496 · ms 80 0.03308799862861633

Identity
implementationPyTorch
projectPyTorch
revisionunknown
workloadseq = 4096 · batch = 1 · hidden = 4096 · bf16
comparison keysha256:4e928a407d9ba2b1…
sourceLiger-Kernel benchmarks
external idmegatron_rms_norm/forward/torch/nvidia-h100-80gb-hbm3/batch1-hidden4096-seq4096-bf16/2026-06-10-21-03-38
sha256:88828b1cc15abb9eb18f92c…

Correctness

Marked passed by the source; the correctness policy was not published.

Workload

seq4096
batch1
hidden4096
xbf16 [4096, 1, 4096]
weightbf16 [4096]
definition comparatornot_asserted

Measurements

latency · median32.5 µs
latency · p2032.1 µs
latency · p8033.1 µs

Protocol

harnessLiger-Kernel benchmark scripts
timercuda_events
primaryStatisticmedian
comparabilityFamilyliger_kernel_bench

Environment

gpuNVIDIA H100 (sm_90)

Artifacts

No artifacts published with this run.

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Canonical manifest

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{
  "run": {
    "kind": "BenchmarkRun",
    "spec": {
      "status": "passed",
      "timing": {
        "latencyNs": {
          "median": 32480
        },
        "primaryStatistic": "median"
      },
      "observedAt": "2026-06-10T21:03:38.000Z",
      "measurements": [
        {
          "unit": "ns",
          "value": 32090,
          "metric": "latency",
          "statistic": "p20"
        },
        {
          "unit": "ns",
          "value": 33088,
          "metric": "latency",
          "statistic": "p80"
        }
      ],
      "sourceNative": {
        "source": "liger-kernel-bench",
        "metrics": {
          "ms_20": 0.03208959847688675,
          "ms_50": 0.03248000144958496,
          "ms_80": 0.03308799862861633
        },
        "benchmark": "megatron_rms_norm/forward",
        "externalId": "megatron_rms_norm/forward/torch/nvidia-h100-80gb-hbm3/batch1-hidden4096-seq4096-bf16/2026-06-10-21-03-38"
      },
      "protocolDigest": "sha256:a79eaf4df66c97c6adc1fb2d09df78682155d1ea86652ae0b70199875bde7747",
      "workloadDigest": "sha256:998e3bbc244509154ea2ea973d0657ac0b188aed764b12428012e635c4c3efcf",
      "environmentDigest": "sha256:2750ae381d6de582f1eb6b9008e0987463d19ede8af127d97d76c5ae09121393",
      "implementationDigest": "sha256:07486a893d05b3338eb1876548053826c12ab08c8afa12bcc829975f75e540c2"
    },
    "metadata": {
      "name": "liger-megatron-rms-norm-forward-torch-nvidia-h100-80gb-hbm3-batch1-hidden4096-seq4096-bf16-2026-06-1",
      "title": "RMSNorm, Megatron layout · torch · forward",
      "labels": {
        "liger_version": "0.8.0"
      }
    },
    "apiVersion": "kernelindex.dev/v1alpha1"
  },
  "protocol": {
    "kind": "BenchmarkProtocol",
    "spec": {
      "harness": {
        "name": "Liger-Kernel benchmark scripts",
        "repository": "https://github.com/linkedin/Liger-Kernel"
      },
      "measurement": {
        "timer": "cuda_events",
        "primaryStatistic": "median"
      },
      "comparability": {
        "notes": "Timed: the module forward pass, 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.",
        "family": "liger_kernel_bench"
      }
    },
    "metadata": {
      "name": "liger-bench-do-bench-forward",
      "title": "Liger benchmark harness · forward pass"
    },
    "apiVersion": "kernelindex.dev/v1alpha1"
  },
  "environment": {
    "kind": "ExecutionEnvironment",
    "spec": {
      "hardware": {
        "vendor": "nvidia",
        "product": "NVIDIA H100",
        "formFactor": "80GB HBM3",
        "architecture": "sm_90"
      },
      "software": {}
    },
    "metadata": {
      "name": "liger-bench-nvidia-h100-80gb-hbm3",
      "title": "Liger benchmark host · H100 80GB HBM3"
    },
    "apiVersion": "kernelindex.dev/v1alpha1"
  }
}
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