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Liger

LayerNorm · rows = 4096 · hidden = 16384 · fp32 · run 01a016ae-ef50…
●passedReported evidence

Not re-observed recently.

Primary measurement
577.6µsmedian

Rank 1 in its comparison group · source-native comparison · observed 2025-07-17

ms 20 0.5753471970558167 · ms 50 0.5776320099830627 · ms 80 0.5798912048339844

Identity
implementationLiger
projectLiger-Kernel
revisionunknown
workloadrows = 4096 · hidden = 16384 · fp32
comparison keysha256:40b0cd47902e513f…
sourceLiger-Kernel benchmarks
external idlayer_norm/backward/liger/nvidia-h100-80gb-hbm3/hidden16384-rows4096-fp32/2025-07-17-18-18-16
sha256:f0cf6dd69e048a9b8a36f49…

Correctness

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

Workload

rows4096
hidden16384
xfp32 [4096, 16384]
biasfp32 [16384]
weightfp32 [16384]
definition comparatornot_asserted

Measurements

latency · median577.6 µs
latency · p20575.3 µs
latency · p80579.9 µs

Protocol

harnessLiger-Kernel benchmark scripts
timercuda_events
primaryStatisticmedian
comparabilityFamilyliger_kernel_bench

Environment

gpuNVIDIA H100 (sm_90)

Artifacts

No artifacts published with this run.

Replications and notes

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Canonical manifest

Show manifest
{
  "run": {
    "kind": "BenchmarkRun",
    "spec": {
      "status": "passed",
      "timing": {
        "latencyNs": {
          "median": 577632
        },
        "primaryStatistic": "median"
      },
      "observedAt": "2025-07-17T18:18:16.000Z",
      "measurements": [
        {
          "unit": "ns",
          "value": 575347,
          "metric": "latency",
          "statistic": "p20"
        },
        {
          "unit": "ns",
          "value": 579891,
          "metric": "latency",
          "statistic": "p80"
        }
      ],
      "sourceNative": {
        "source": "liger-kernel-bench",
        "metrics": {
          "ms_20": 0.5753471970558167,
          "ms_50": 0.5776320099830627,
          "ms_80": 0.5798912048339844
        },
        "benchmark": "layer_norm/backward",
        "externalId": "layer_norm/backward/liger/nvidia-h100-80gb-hbm3/hidden16384-rows4096-fp32/2025-07-17-18-18-16"
      },
      "protocolDigest": "sha256:080e6e66e4ec75a131aa0c9121c74b8e8eed64e7b6d621d567c6a28f79548be8",
      "workloadDigest": "sha256:7c1b78dd05411e37a6a621247e8e82deccccdd018deabaccca3f741612bd5d8b",
      "environmentDigest": "sha256:2750ae381d6de582f1eb6b9008e0987463d19ede8af127d97d76c5ae09121393",
      "implementationDigest": "sha256:77931b8372d01c2e92fd763373b2fdab449b85949aad6fcfa15bee3810319f2b"
    },
    "metadata": {
      "name": "liger-layer-norm-backward-liger-nvidia-h100-80gb-hbm3-hidden16384-rows4096-fp32-2025-07-17-18-18-16",
      "title": "LayerNorm · liger · backward",
      "labels": {
        "liger_version": "0.6.0"
      }
    },
    "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 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.",
        "family": "liger_kernel_bench"
      }
    },
    "metadata": {
      "name": "liger-bench-do-bench-backward",
      "title": "Liger benchmark harness · backward 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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Published 2026-08-18 · Liger-Kernel benchmarks · BSD-2-ClauseAll results for LayerNorm →JSON