Transformers
Fused add + RMSNorm · rows = 2048 · hidden = 4096 · fp32 · run 01a016af-160e…
●passedReported evidence
Primary measurement
149.1µsmedian
Rank 3 in its comparison group · source-native comparison · observed 2026-04-07
ms 20 0.14828799664974213 · ms 50 0.14908799529075623 · ms 80 0.14972800016403198
Identity
implementationTransformers
projectHugging Face Transformers
revisionunknown
workloadrows = 2048 · hidden = 4096 · fp32
comparison keysha256:71e68612aeab6bc4…
sourceLiger-Kernel benchmarks
external idfused_add_rms_norm/forward/huggingface/nvidia-h100-80gb-hbm3/hidden4096-rows2048-fp32/2026-04-07-21-27-23
sha256:0b067ef7ac475f508fb0a78…
Correctness
Marked passed by the source; the correctness policy was not published.
Workload
rows2048
hidden4096
xfp32 [2048, 4096]
weightfp32 [4096]
residualfp32 [2048, 4096]
definition comparatornot_asserted
Measurements
latency · median149.1 µs
latency · p20148.3 µs
latency · p80149.7 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.
Add a reproduction or note
Canonical manifest
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{
"run": {
"kind": "BenchmarkRun",
"spec": {
"status": "passed",
"timing": {
"latencyNs": {
"median": 149088
},
"primaryStatistic": "median"
},
"observedAt": "2026-04-07T21:27:23.000Z",
"measurements": [
{
"unit": "ns",
"value": 148288,
"metric": "latency",
"statistic": "p20"
},
{
"unit": "ns",
"value": 149728,
"metric": "latency",
"statistic": "p80"
}
],
"sourceNative": {
"source": "liger-kernel-bench",
"metrics": {
"ms_20": 0.14828799664974213,
"ms_50": 0.14908799529075623,
"ms_80": 0.14972800016403198
},
"benchmark": "fused_add_rms_norm/forward",
"externalId": "fused_add_rms_norm/forward/huggingface/nvidia-h100-80gb-hbm3/hidden4096-rows2048-fp32/2026-04-07-21-27-23"
},
"protocolDigest": "sha256:a79eaf4df66c97c6adc1fb2d09df78682155d1ea86652ae0b70199875bde7747",
"workloadDigest": "sha256:d480d00c99a1adff0dacb94d52af9bc3daa6b9850d16c1f466b51f4807d4b33b",
"environmentDigest": "sha256:2750ae381d6de582f1eb6b9008e0987463d19ede8af127d97d76c5ae09121393",
"implementationDigest": "sha256:8a6a941077b6fb0ddcc8d75d257d1738f16cdc13ef8d4073ed447bebc48c807c"
},
"metadata": {
"name": "liger-fused-add-rms-norm-forward-huggingface-nvidia-h100-80gb-hbm3-hidden4096-rows2048-fp32-2026-04-",
"title": "Fused add + RMSNorm · huggingface · forward",
"labels": {
"liger_version": "0.7.0"
}
},
"apiVersion": "kernelindex.dev/v1alpha1"
},
"protocol": {
"kind": "BenchmarkProtocol",
"spec": {
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"repository": "https://github.com/linkedin/Liger-Kernel"
},
"measurement": {
"timer": "cuda_events",
"primaryStatistic": "median"
},
"comparability": {
"notes": "Timed: the module forward 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"
}
},
"metadata": {
"name": "liger-bench-do-bench-forward",
"title": "Liger benchmark harness · forward pass"
},
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"environment": {
"kind": "ExecutionEnvironment",
"spec": {
"hardware": {
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"formFactor": "80GB HBM3",
"architecture": "sm_90"
},
"software": {}
},
"metadata": {
"name": "liger-bench-nvidia-h100-80gb-hbm3",
"title": "Liger benchmark host · H100 80GB HBM3"
},
"apiVersion": "kernelindex.dev/v1alpha1"
}
}Cite this record (permalink, digest, access date)
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Published 2026-08-18 · Liger-Kernel benchmarks · BSD-2-ClauseAll results for Fused add + RMSNorm →JSON