Run 01a00b1d · KernelIndex

Primary measurement

265.7µsmean

Rank 1 in its comparison group · source-native comparison · observed 2026-03-28

7.37× reference

Identity

implementationflashinfer_wrapper_2d6239

projectFlashInfer-Bench baselines

revisionda915083d4c7c5e61aa3005e3d17ae488e0fc71c

workloadtotal_q = 2527 · num_pages = 9138 · len_indptr = 4 · num_kv_indices = 2527 · bf16

comparison keysha256:21de7aaba0b71554…

sourceFlashInfer-Bench

external idtrace/flashinfer_wrapper_2d6239/e7e5aaf0-c2d7-4e7f-8828-8f1a49b8f63a

sha256:c5247c976f1749a067d9b42…

Correctness

comparatorflashinfer_bench_eval

max absolute error0.015625

max relative error18214.26953125

resultpassed

Workload

total_q2527

num_pages9138

len_indptr4

num_kv_indices2527

qbf16 [2527, 20, 128]

k_cachebf16 [9138, 1, 4, 128]

v_cachebf16 [9138, 1, 4, 128]

kv_indptrint32 [4]

qo_indptrint32 [4]

kv_indicesint32 [2527]

definition comparatorsol_execbench_eval

Measurements

latency · mean265.7 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

No artifacts published with this run.

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": 265733
        },
        "primaryStatistic": "mean"
      },
      "observedAt": "2026-03-28T16:27:56.883Z",
      "correctness": {
        "comparator": "sol_execbench_eval",
        "maximumAbsoluteError": 0.015625,
        "maximumRelativeError": 18214.26953125
      },
      "sourceNative": {
        "source": "flashinfer-bench",
        "metrics": {
          "latency_ms": 0.2657333314418793,
          "speedup_factor": 7.37362777818713,
          "reference_latency_ms": 1.9594186743100483
        },
        "benchmark": "gqa_paged_prefill_causal_h20_kv4_d128_ps1"
      },
      "protocolDigest": "sha256:7d44d206ad086b4bece35ce31f6531ebb11f07e0d9dcfb74c75be86d3ec02095",
      "workloadDigest": "sha256:71eb46a15dbf9cf0c39949b38b06eb5ccc218deadfb514ed514bc8336c1bf70e",
      "environmentDigest": "sha256:af7cb68a0bb0eb9671092a620668c2600f0431301fc46a71807ea75fb7de8bce",
      "implementationDigest": "sha256:f91a7232026a660f7c6d80f80f35c5979f34c30ac160b150d22c7b14dddd64a8"
    },
    "metadata": {
      "name": "sol-trace-gqa-paged-prefill-causal-h20-kv4-d128-ps1-e7e5aaf0",
      "title": "flashinfer_wrapper_2d6239 · gqa_paged_prefill_causal_h20_kv4_d128_ps1"
    },
    "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 h20 kv4 d128 ps1 →JSON

flashinfer / wrapper2d6239