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SwiGLU activation, Megatron layout · ffn = 8192 · seq = 2048 · batch = 4 · bf16 · run 01a0202b-241b…
●passedReported evidence
Primary measurement
1.29msmedian

Rank 4 in its comparison group · source-native comparison · observed 2026-07-26

Compare with #1 →

ms 20 1.287782382965088 · ms 50 1.2886880040168762 · ms 80 1.289689588546753

Identity
implementationPyTorch
projectPyTorch
revisionunknown
workloadffn = 8192 · seq = 2048 · batch = 4 · bf16
comparison keysha256:3ae4f462b58af896…
sourceLiger-Kernel benchmarks
external idmegatron_swiglu/backward/megatron/nvidia-h100-80gb-hbm3/batch4-ffn8192-seq2048-bf16/2026-07-26-00-09-55
sha256:a5c0c5e5c4add1c0fbe6fb7…

Correctness

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

Workload

ffn8192
seq2048
batch4
ybf16 [2048, 4, 16384]
definition comparatornot_asserted

Measurements

latency · median1.29 ms
latency · p201.29 ms
latency · p801.29 ms

Protocol

harnessLiger-Kernel benchmark scripts
timercuda_events
primaryStatisticmedian
comparabilityFamilyliger_kernel_bench

Environment

gpuNVIDIA H100 (sm_90)

Artifacts

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Canonical manifest

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{
  "run": {
    "kind": "BenchmarkRun",
    "spec": {
      "status": "passed",
      "timing": {
        "latencyNs": {
          "median": 1288688
        },
        "primaryStatistic": "median"
      },
      "observedAt": "2026-07-26T00:09:55.000Z",
      "measurements": [
        {
          "unit": "ns",
          "value": 1287782,
          "metric": "latency",
          "statistic": "p20"
        },
        {
          "unit": "ns",
          "value": 1289690,
          "metric": "latency",
          "statistic": "p80"
        }
      ],
      "sourceNative": {
        "source": "liger-kernel-bench",
        "metrics": {
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          "ms_50": 1.2886880040168762,
          "ms_80": 1.289689588546753
        },
        "benchmark": "megatron_swiglu/backward",
        "externalId": "megatron_swiglu/backward/megatron/nvidia-h100-80gb-hbm3/batch4-ffn8192-seq2048-bf16/2026-07-26-00-09-55"
      },
      "protocolDigest": "sha256:080e6e66e4ec75a131aa0c9121c74b8e8eed64e7b6d621d567c6a28f79548be8",
      "workloadDigest": "sha256:62ee229c7cd4b963d3969df73a210e61c6c935e9d322a9a8f2db84ef1a7963ec",
      "environmentDigest": "sha256:2750ae381d6de582f1eb6b9008e0987463d19ede8af127d97d76c5ae09121393",
      "implementationDigest": "sha256:ebdec3855511a3b6ae7df50fa27a70da8c06b0eb5d8026a2fe27779438c068bb"
    },
    "metadata": {
      "name": "liger-megatron-swiglu-backward-megatron-nvidia-h100-80gb-hbm3-batch4-ffn8192-seq2048-bf16-2026-07-26",
      "title": "SwiGLU activation, Megatron layout · megatron · backward",
      "labels": {
        "liger_version": "0.8.1"
      }
    },
    "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"
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  "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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