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PyTorch eager

LSTM · batch_size = 10 · input_size = 128 · sequence_length = 512 · fp32 · run 01a03f0e-f841…
●passedReported evidence

Not re-observed recently.

Primary measurement
29.4ms±0.08 · mean of 100

Rank 1 in its comparison group · source-native comparison · observed 2026-03-05

max ms 31.1 · min ms 29.1 · std ms 0.412 · mean ms 29.4

Identity
implementationPyTorch eager
projectPyTorch
revisionunknown
workloadbatch_size = 10 · input_size = 128 · sequence_length = 512 · fp32
comparison keysha256:afce67f8619732f3…
sourceKernelBench baseline timings
external idH100_PCIe_LambdaLabs/torch/level3/35_LSTM.py
sha256:e63d68a1e7087356ef13b35…

Correctness

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

Workload

batch_size10
input_size128
sequence_length512
input_1fp32 [10, 512, 128]
definition comparatornot_asserted

Measurements

latency · max31.1 ms · n=100
latency · mean29.4 ms · n=100
latency · min29.1 ms · n=100
latency · std412.0 µs

Protocol

harnessKernelBench timing scripts
timercuda_events
primaryStatisticmean
comparabilityFamilykernelbench_baseline_timing

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": {
        "samples": 100,
        "latencyNs": {
          "mean": 29400000,
          "maximum": 31100000,
          "minimum": 29100000,
          "confidence95": [
            29319248,
            29480752
          ]
        },
        "primaryStatistic": "mean"
      },
      "observedAt": "2026-03-05T08:38:15.000Z",
      "measurements": [
        {
          "unit": "ns",
          "value": 412000,
          "metric": "latency",
          "statistic": "std"
        }
      ],
      "sourceNative": {
        "source": "kernelbench",
        "metrics": {
          "max_ms": 31.1,
          "min_ms": 29.1,
          "std_ms": 0.412,
          "mean_ms": 29.4
        },
        "benchmark": "H100_PCIe_LambdaLabs/baseline_time_torch.json",
        "externalId": "H100_PCIe_LambdaLabs/torch/level3/35_LSTM.py"
      },
      "protocolDigest": "sha256:547725b033a9911eae0c5ac362344a85aed824894ed4ab476af945b9bb491ea6",
      "workloadDigest": "sha256:9ebbb81b03366f99aee735c51b7f95c0cfa8b5ded2965b9b4385e4581ef12dfb",
      "environmentDigest": "sha256:89f9b28b06758f22a1df331fea58bfde2c9cc0f3627d1829509743ea538f0011",
      "implementationDigest": "sha256:6bf689801fa5567ee610738db4a179579b2b552292c17df5c75b90ed69cbac95"
    },
    "metadata": {
      "name": "kernelbench-h100-pcie-lambdalabs-torch-l3-35-lstm",
      "title": "LSTM · PyTorch eager · Lambda Labs"
    },
    "apiVersion": "kernelindex.dev/v1alpha1"
  },
  "protocol": {
    "kind": "BenchmarkProtocol",
    "spec": {
      "harness": {
        "name": "KernelBench timing scripts",
        "repository": "https://github.com/ScalingIntelligence/KernelBench"
      },
      "measurement": {
        "timer": "cuda_events",
        "primaryStatistic": "mean"
      },
      "comparability": {
        "notes": "Mean of 100 timed forward passes (CUDA events, warm-up excluded) of the reference module on fixed inputs; the 95% interval is the mean's, from the reported standard deviation. The upstream JSON records no torch or CUDA version. Comparable only within one problem and one timing host.",
        "family": "kernelbench_baseline_timing"
      }
    },
    "metadata": {
      "name": "kernelbench-timing-v1",
      "title": "KernelBench baseline timing"
    },
    "apiVersion": "kernelindex.dev/v1alpha1"
  },
  "environment": {
    "kind": "ExecutionEnvironment",
    "spec": {
      "hardware": {
        "vendor": "nvidia",
        "product": "NVIDIA H100",
        "formFactor": "PCIe",
        "architecture": "sm_90"
      },
      "software": {}
    },
    "metadata": {
      "name": "kernelbench-h100-pcie-lambdalabs",
      "title": "KernelBench host · H100 PCIe (Lambda Labs)"
    },
    "apiVersion": "kernelindex.dev/v1alpha1"
  }
}
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