gpt-5 / cudafd76fe
MLA paged prefill causal h16 ckv512 kpe64 ps1 · total_q = 199 · num_pages = 989669 · len_indptr = 2 · num_kv_indices = 203 · bf16 · run 01a02032-5969…
●passedReported evidence
Not re-observed recently.
Primary measurement
244.4µsmean
Rank 2 in its comparison group · source-native comparison · observed 2025-10-16
515.42× reference
Identity
implementationgpt-5_cuda_fd76fe
projectgpt-5-2025-08-07
revisionda915083d4c7c5e61aa3005e3d17ae488e0fc71c
workloadtotal_q = 199 · num_pages = 989669 · len_indptr = 2 · num_kv_indices = 203 · bf16
comparison keysha256:885a63dcdca03cf0…
sourceFlashInfer-Bench
external idtrace/gpt-5_cuda_fd76fe/4eeb9b51-ce9b-40a3-9f8f-2604fed79629
sha256:33733233a4d0b19624faea8…
Correctness
comparatorflashinfer_bench_eval
max absolute error0.0078125
max relative error3.6524434089660645
resultpassed
Workload
total_q199
num_pages989669
len_indptr2
num_kv_indices203
q_pebf16 [199, 16, 64]
q_nopebf16 [199, 16, 512]
ckv_cachebf16 [989669, 1, 512]
kpe_cachebf16 [989669, 1, 64]
kv_indptrint32 [2]
qo_indptrint32 [2]
kv_indicesint32 [203]
definition comparatorsol_execbench_eval
Measurements
latency · mean244.4 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
No artifacts published with this run.
Replications and notes
No attestations yet.
Community attestations. They never change the evidence level; only a KernelIndex-controlled rerun does.
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{
"run": {
"kind": "BenchmarkRun",
"spec": {
"status": "passed",
"timing": {
"latencyNs": {
"mean": 244399
},
"primaryStatistic": "mean"
},
"observedAt": "2025-10-16T11:19:32.393Z",
"correctness": {
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"maximumAbsoluteError": 0.0078125,
"maximumRelativeError": 3.6524434089660645
},
"sourceNative": {
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"metrics": {
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"speedup_factor": 515.4248985285097,
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},
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"metadata": {
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"title": "gpt-5_cuda_fd76fe · mla_paged_prefill_causal_h16_ckv512_kpe64_ps1"
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"protocol": {
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}
}Cite this record (permalink, digest, access date)
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Published 2026-08-20 · FlashInfer-Bench · Apache-2.0All results for MLA paged prefill causal h16 ckv512 kpe64 ps1 →JSON