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gpt-o3 / cuda9abd34

GQA ragged prefill causal h32 kv4 d128 · total_q = 34 · total_kv = 34 · len_indptr = 2 · bf16 · run 01a02032-5e34…
●passedReported evidence

Not re-observed recently.

Primary measurement
215.0µsmean

Rank 4 in its comparison group · source-native comparison · observed 2025-10-20

Compare with #1 →

24.15× reference

Identity
implementationgpt-o3_cuda_9abd34
projectgpt-o3
revisionda915083d4c7c5e61aa3005e3d17ae488e0fc71c
workloadtotal_q = 34 · total_kv = 34 · len_indptr = 2 · bf16
comparison keysha256:8a8ef34a805636b0…
sourceFlashInfer-Bench
external idtrace/gpt-o3_cuda_9abd34/3ca7457e-e4b1-42a4-b6c7-c0b37c461054
sha256:58ab0123113513be845fb8e…

Correctness

comparatorflashinfer_bench_eval
max absolute error0.001953125
max relative error0.06107652187347412
resultpassed

Workload

total_q34
total_kv34
len_indptr2
kbf16 [34, 4, 128]
qbf16 [34, 32, 128]
vbf16 [34, 4, 128]
kv_indptrint32 [2]
qo_indptrint32 [2]
definition comparatorsol_execbench_eval

Measurements

latency · mean215.0 µs

Protocol

harnessflashinfer-bench
timerharness_reported
primaryStatisticmean
correctnessReferencedefinition reference implementation
comparabilityFamilyflashinfer_bench_trace

Environment

gpuNVIDIA B200 (unknown)
cudaToolkit12.8
frameworkpytorch 2.8.0+cu128

Artifacts

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Canonical manifest

Show manifest
{
  "run": {
    "kind": "BenchmarkRun",
    "spec": {
      "status": "passed",
      "timing": {
        "latencyNs": {
          "mean": 214968
        },
        "primaryStatistic": "mean"
      },
      "observedAt": "2025-10-20T01:06:37.992Z",
      "correctness": {
        "comparator": "sol_execbench_eval",
        "maximumAbsoluteError": 0.001953125,
        "maximumRelativeError": 0.06107652187347412
      },
      "sourceNative": {
        "source": "flashinfer-bench",
        "metrics": {
          "latency_ms": 0.21496787453510424,
          "speedup_factor": 24.15403571619253,
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        },
        "benchmark": "gqa_ragged_prefill_causal_h32_kv4_d128"
      },
      "protocolDigest": "sha256:7d44d206ad086b4bece35ce31f6531ebb11f07e0d9dcfb74c75be86d3ec02095",
      "workloadDigest": "sha256:816a2cbeb81a5575a845db1b0158c1a9a7c7277239ec6f15354a6dde24fc00e5",
      "environmentDigest": "sha256:f4292a8be127b7230cd3995c1d605fb6c644e2c2f94566e1d28cc1be766ca5d5",
      "implementationDigest": "sha256:3a73a83021dd9abc23c3f9cf84a55ebd359eadfde4346501fc90586dd7f3116c"
    },
    "metadata": {
      "name": "sol-trace-gqa-ragged-prefill-causal-h32-kv4-d128-3ca7457e",
      "title": "gpt-o3_cuda_9abd34 · gqa_ragged_prefill_causal_h32_kv4_d128"
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    "apiVersion": "kernelindex.dev/v1alpha1"
  },
  "protocol": {
    "kind": "BenchmarkProtocol",
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      "comparability": {
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    },
    "metadata": {
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  "environment": {
    "kind": "ExecutionEnvironment",
    "spec": {
      "hardware": {
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    "metadata": {
      "name": "sol-trace-nvidia-b200-2-8-0-cu128-3-4-0-12-8",
      "title": "NVIDIA B200 (trace-reported software)"
    },
    "apiVersion": "kernelindex.dev/v1alpha1"
  }
}
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