Run 01a00b1d · KernelIndex

Primary measurement

21.9µsmean

Rank 2 in its comparison group · source-native comparison · observed 2026-03-31

Compare with #1 →

23.36× reference

Identity

implementationflashinfer_wrapper_bb278d

projectFlashInfer-Bench baselines

revisionda915083d4c7c5e61aa3005e3d17ae488e0fc71c

workloadtotal_q = 1 · num_pages = 65 · len_indptr = 2 · num_kv_indices = 1 · bf16

comparison keysha256:316c65015cd7e109…

sourceFlashInfer-Bench

external idtrace/flashinfer_wrapper_bb278d/f4ea8ae9-35d8-4441-b7fc-067d635c2e8a

sha256:b3aba4f9dc86c82cf51f7b2…

Correctness

comparatorflashinfer_bench_eval

max absolute error7.152557373046875e-7

max relative error0.000004659004844143055

resultpassed

Workload

total_q1

num_pages65

len_indptr2

num_kv_indices1

qbf16 [1, 24, 128]

k_cachebf16 [65, 64, 4, 128]

v_cachebf16 [65, 64, 4, 128]

kv_indptrint32 [2]

qo_indptrint32 [2]

kv_indicesint32 [1]

kv_last_page_lenint32 [2]

definition comparatorsol_execbench_eval

Measurements

latency · mean21.9 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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Replications and notes

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Community attestations. They never change the evidence level; only a KernelIndex-controlled rerun does.

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Canonical manifest

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{
  "run": {
    "kind": "BenchmarkRun",
    "spec": {
      "status": "passed",
      "timing": {
        "latencyNs": {
          "mean": 21925
        },
        "primaryStatistic": "mean"
      },
      "observedAt": "2026-03-31T14:29:57.116Z",
      "correctness": {
        "comparator": "sol_execbench_eval",
        "maximumAbsoluteError": 7.152557373046875e-7,
        "maximumRelativeError": 0.000004659004844143055
      },
      "sourceNative": {
        "source": "flashinfer-bench",
        "metrics": {
          "latency_ms": 0.021925333333333335,
          "speedup_factor": 23.361606056920454,
          "reference_latency_ms": 0.512211
        },
        "benchmark": "gqa_paged_prefill_causal_h24_kv4_d128_ps64"
      },
      "protocolDigest": "sha256:7d44d206ad086b4bece35ce31f6531ebb11f07e0d9dcfb74c75be86d3ec02095",
      "workloadDigest": "sha256:9840156444b0ab0b03b78f758ae68853e27511b96e495b66e21dec9eaa46e20c",
      "environmentDigest": "sha256:af7cb68a0bb0eb9671092a620668c2600f0431301fc46a71807ea75fb7de8bce",
      "implementationDigest": "sha256:d253263c25e6dd4e5408f68aeba1c85ef75304f3acd174aafa6b43a43a44605a"
    },
    "metadata": {
      "name": "sol-trace-gqa-paged-prefill-causal-h24-kv4-d128-ps64-f4ea8ae9",
      "title": "flashinfer_wrapper_bb278d · gqa_paged_prefill_causal_h24_kv4_d128_ps64"
    },
    "apiVersion": "kernelindex.dev/v1alpha1"
  },
  "protocol": {
    "kind": "BenchmarkProtocol",
    "spec": {
      "harness": {
        "name": "flashinfer-bench",
        "repository": "https://github.com/flashinfer-ai/flashinfer-bench"
      },
      "correctness": {
        "reference": "definition reference implementation",
        "comparator": "flashinfer_bench_eval"
      },
      "measurement": {
        "timer": "harness_reported",
        "primaryStatistic": "mean"
      },
      "comparability": {
        "family": "flashinfer_bench_trace"
      }
    },
    "metadata": {
      "name": "flashinfer-bench-trace",
      "title": "FlashInfer-Bench trace harness"
    },
    "apiVersion": "kernelindex.dev/v1alpha1"
  },
  "environment": {
    "kind": "ExecutionEnvironment",
    "spec": {
      "hardware": {
        "vendor": "nvidia",
        "product": "NVIDIA B200",
        "architecture": "unknown"
      },
      "software": {
        "framework": {
          "name": "pytorch",
          "version": "2.9.1+cu128"
        },
        "libraries": {
          "triton": "3.5.1"
        },
        "cudaToolkit": "12.8"
      }
    },
    "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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Published 2026-08-16 · FlashInfer-Bench · Apache-2.0All results for GQA paged prefill causal h24 kv4 d128 ps64 →JSON

flashinfer / wrapperbb278d