Transformers
Llama 4 rotary position embedding · seq = 1024 · hidden = 8192 · q_heads = 32 · kv_heads = 8 · bf16 · run 01a0202b-2335…
●passedReported evidence
Not re-observed recently.
Primary measurement
245.9µsmedian
Rank 1 in its comparison group · source-native comparison · observed 2025-08-07
ms 20 0.24396799504756927 · ms 50 0.24592000246047974 · ms 80 0.24876800179481506
Identity
implementationTransformers
projectHugging Face Transformers
revisionunknown
workloadseq = 1024 · hidden = 8192 · q_heads = 32 · kv_heads = 8 · bf16
comparison keysha256:5b4999b239e082ac…
sourceLiger-Kernel benchmarks
external idllama4_rope/full/huggingface/nvidia-h100-80gb-hbm3/hidden8192-kv_heads8-q_heads32-seq1024-bf16/2025-08-07-21-42-21
sha256:9da305c7505ed991eb5dd06…
Correctness
Marked passed by the source; the correctness policy was not published.
Workload
seq1024
hidden8192
q_heads32
kv_heads8
kbf16 [1, 1024, 8, 256]
qbf16 [1, 1024, 32, 256]
definition comparatornot_asserted
Measurements
latency · median245.9 µs
latency · p20244.0 µs
latency · p80248.8 µs
Protocol
harnessLiger-Kernel benchmark scripts
timercuda_events
primaryStatisticmedian
comparabilityFamilyliger_kernel_bench
Environment
gpuNVIDIA H100 (sm_90)
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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Canonical manifest
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{
"run": {
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"spec": {
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"timing": {
"latencyNs": {
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},
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},
"observedAt": "2025-08-07T21:42:21.000Z",
"measurements": [
{
"unit": "ns",
"value": 243968,
"metric": "latency",
"statistic": "p20"
},
{
"unit": "ns",
"value": 248768,
"metric": "latency",
"statistic": "p80"
}
],
"sourceNative": {
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"metrics": {
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},
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"environmentDigest": "sha256:2750ae381d6de582f1eb6b9008e0987463d19ede8af127d97d76c5ae09121393",
"implementationDigest": "sha256:cca024409163839a832c1d39bd301f536494b645171665d65fae5faf2717be48"
},
"metadata": {
"name": "liger-llama4-rope-full-huggingface-nvidia-h100-80gb-hbm3-hidden8192-kv-heads8-q-heads32-seq1024-bf16",
"title": "Llama 4 rotary position embedding · huggingface · full",
"labels": {
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}
},
"apiVersion": "kernelindex.dev/v1alpha1"
},
"protocol": {
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"spec": {
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},
"measurement": {
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},
"comparability": {
"notes": "Timed: the forward pass plus the backward pass, via triton.testing.do_bench with quantiles 0.5/0.2/0.8 (median with p20/p80 spread). The upstream CSV records no CUDA, driver, or torch version; the Liger release rides each run's labels. Comparable only within one kernel, workload, timed pass, and GPU.",
"family": "liger_kernel_bench"
}
},
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"title": "Liger benchmark harness · full pass"
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"environment": {
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},
"software": {}
},
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"title": "Liger benchmark host · H100 80GB HBM3"
},
"apiVersion": "kernelindex.dev/v1alpha1"
}
}Cite this record (permalink, digest, access date)
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Published 2026-08-20 · Liger-Kernel benchmarks · BSD-2-ClauseAll results for Llama 4 rotary position embedding →JSON