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gpt-o3 / cuda5548d0

GQA paged decode h32 kv4 d128 ps1 · num_pages = 67 · batch_size = 1 · len_indptr = 2 · num_kv_indices = 50 · bf16 · run 01a02032-5c5d…
●passedReported evidence

Not re-observed recently.

Primary measurement
57.7µsmean

Rank 2 in its comparison group · source-native comparison · observed 2026-03-28

Compare with #1 →

18.04× reference

Identity
implementationgpt-o3_cuda_5548d0
projectgpt-o3
revisionda915083d4c7c5e61aa3005e3d17ae488e0fc71c
workloadnum_pages = 67 · batch_size = 1 · len_indptr = 2 · num_kv_indices = 50 · bf16
comparison keysha256:08dd10dd6322ddba…
sourceFlashInfer-Bench
sha256:dbf8b85416f5935155286de…

Correctness

comparatorflashinfer_bench_eval
max absolute error0.00048828125
max relative error0.00401606410741806
resultpassed

Workload

num_pages67
batch_size1
len_indptr2
num_kv_indices50
qbf16 [1, 32, 128]
k_cachebf16 [67, 1, 4, 128]
v_cachebf16 [67, 1, 4, 128]
kv_indptrint32 [2]
kv_indicesint32 [50]
definition comparatorsol_execbench_eval

Measurements

latency · mean57.7 µs

Protocol

harnessflashinfer-bench
timerharness_reported
primaryStatisticmean
correctnessReferencedefinition reference implementation
comparabilityFamilyflashinfer_bench_trace

Environment

gpuNVIDIA B200 (unknown)
cudaToolkit12.8
frameworkpytorch 2.9.1+cu128

Artifacts

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Canonical manifest

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{
  "run": {
    "kind": "BenchmarkRun",
    "spec": {
      "status": "passed",
      "timing": {
        "latencyNs": {
          "mean": 57675
        },
        "primaryStatistic": "mean"
      },
      "observedAt": "2026-03-28T14:42:42.268Z",
      "correctness": {
        "comparator": "sol_execbench_eval",
        "maximumAbsoluteError": 0.00048828125,
        "maximumRelativeError": 0.00401606410741806
      },
      "sourceNative": {
        "source": "flashinfer-bench",
        "metrics": {
          "latency_ms": 0.05767466748754183,
          "speedup_factor": 18.041057726303084,
          "reference_latency_ms": 1.0405120054880779
        },
        "benchmark": "gqa_paged_decode_h32_kv4_d128_ps1"
      },
      "protocolDigest": "sha256:7d44d206ad086b4bece35ce31f6531ebb11f07e0d9dcfb74c75be86d3ec02095",
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      "environmentDigest": "sha256:af7cb68a0bb0eb9671092a620668c2600f0431301fc46a71807ea75fb7de8bce",
      "implementationDigest": "sha256:9065668f65f0c70486702b4d7105d2a2da70e1aebd03314d68ffce9743ed081e"
    },
    "metadata": {
      "name": "sol-trace-gqa-paged-decode-h32-kv4-d128-ps1-48d4f85b",
      "title": "gpt-o3_cuda_5548d0 · gqa_paged_decode_h32_kv4_d128_ps1"
    },
    "apiVersion": "kernelindex.dev/v1alpha1"
  },
  "protocol": {
    "kind": "BenchmarkProtocol",
    "spec": {
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      "comparability": {
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    },
    "metadata": {
      "name": "flashinfer-bench-trace",
      "title": "FlashInfer-Bench trace harness"
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    "apiVersion": "kernelindex.dev/v1alpha1"
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  "environment": {
    "kind": "ExecutionEnvironment",
    "spec": {
      "hardware": {
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        },
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      }
    },
    "metadata": {
      "name": "sol-trace-nvidia-b200-2-9-1-cu128-3-5-1-12-8",
      "title": "NVIDIA B200 (trace-reported software)"
    },
    "apiVersion": "kernelindex.dev/v1alpha1"
  }
}
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