Run 01a00b1d · KernelIndex

Primary measurement

1.84msmean

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

1.36× reference

Identity

implementationflashinfer_wrapper_2d6239

projectFlashInfer-Bench baselines

revisionda915083d4c7c5e61aa3005e3d17ae488e0fc71c

workloadtotal_q = 2440 · num_pages = 94603 · len_indptr = 9 · num_kv_indices = 2440 · bf16

comparison keysha256:94c95ad6e8d730d6…

sourceFlashInfer-Bench

external idtrace/flashinfer_wrapper_2d6239/64dc0f60-7f3b-4c87-8fdf-e7661ac8c153

sha256:c78a0bc1d6fd2dffb3aa0cb…

Correctness

comparatorflashinfer_bench_eval

max absolute error0.015625

max relative error12692.998046875

resultpassed

Workload

total_q2440

num_pages94603

len_indptr9

num_kv_indices2440

qbf16 [2440, 20, 128]

k_cachebf16 [94603, 1, 4, 128]

v_cachebf16 [94603, 1, 4, 128]

kv_indptrint32 [9]

qo_indptrint32 [9]

kv_indicesint32 [2440]

definition comparatorsol_execbench_eval

Measurements

latency · mean1.84 ms

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": 1842165
        },
        "primaryStatistic": "mean"
      },
      "observedAt": "2026-03-28T16:28:05.380Z",
      "correctness": {
        "comparator": "sol_execbench_eval",
        "maximumAbsoluteError": 0.015625,
        "maximumRelativeError": 12692.998046875
      },
      "sourceNative": {
        "source": "flashinfer-bench",
        "metrics": {
          "latency_ms": 1.8421653111775715,
          "speedup_factor": 1.3629960374125683,
          "reference_latency_ms": 2.510864019393921
        },
        "benchmark": "gqa_paged_prefill_causal_h20_kv4_d128_ps1"
      },
      "protocolDigest": "sha256:7d44d206ad086b4bece35ce31f6531ebb11f07e0d9dcfb74c75be86d3ec02095",
      "workloadDigest": "sha256:05d509e0fdf8cfcced729e0a59cbc3a8f967bb806801a82a54bf6b36990aac4e",
      "environmentDigest": "sha256:af7cb68a0bb0eb9671092a620668c2600f0431301fc46a71807ea75fb7de8bce",
      "implementationDigest": "sha256:f91a7232026a660f7c6d80f80f35c5979f34c30ac160b150d22c7b14dddd64a8"
    },
    "metadata": {
      "name": "sol-trace-gqa-paged-prefill-causal-h20-kv4-d128-ps1-64dc0f60",
      "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