Liger
LayerNorm · rows = 4096 · hidden = 1024 · fp32 · run 01a016ae-e8d8…
●passedReported evidence
Not re-observed recently.
Primary measurement
120.1µsmedian
Rank 2 in its comparison group · source-native comparison · observed 2025-07-17
ms 20 0.11653760075569153 · ms 50 0.12006399780511856 · ms 80 0.12467200309038162
Identity
implementationLiger
projectLiger-Kernel
revisionunknown
workloadrows = 4096 · hidden = 1024 · fp32
comparison keysha256:35f186549511e2f2…
sourceLiger-Kernel benchmarks
external idlayer_norm/backward/liger/nvidia-h100-80gb-hbm3/hidden1024-rows4096-fp32/2025-07-17-18-18-16
sha256:7fab0d1a06db7475afe8385…
Correctness
Marked passed by the source; the correctness policy was not published.
Workload
rows4096
hidden1024
xfp32 [4096, 1024]
biasfp32 [1024]
weightfp32 [1024]
definition comparatornot_asserted
Measurements
latency · median120.1 µs
latency · p20116.5 µs
latency · p80124.7 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": 120064
},
"primaryStatistic": "median"
},
"observedAt": "2025-07-17T18:18:16.000Z",
"measurements": [
{
"unit": "ns",
"value": 116538,
"metric": "latency",
"statistic": "p20"
},
{
"unit": "ns",
"value": 124672,
"metric": "latency",
"statistic": "p80"
}
],
"sourceNative": {
"source": "liger-kernel-bench",
"metrics": {
"ms_20": 0.11653760075569153,
"ms_50": 0.12006399780511856,
"ms_80": 0.12467200309038162
},
"benchmark": "layer_norm/backward",
"externalId": "layer_norm/backward/liger/nvidia-h100-80gb-hbm3/hidden1024-rows4096-fp32/2025-07-17-18-18-16"
},
"protocolDigest": "sha256:080e6e66e4ec75a131aa0c9121c74b8e8eed64e7b6d621d567c6a28f79548be8",
"workloadDigest": "sha256:739a08d860de11be4e38985f0058114e96192df54b708b9df0bb6041ff6294ba",
"environmentDigest": "sha256:2750ae381d6de582f1eb6b9008e0987463d19ede8af127d97d76c5ae09121393",
"implementationDigest": "sha256:77931b8372d01c2e92fd763373b2fdab449b85949aad6fcfa15bee3810319f2b"
},
"metadata": {
"name": "liger-layer-norm-backward-liger-nvidia-h100-80gb-hbm3-hidden1024-rows4096-fp32-2025-07-17-18-18-16",
"title": "LayerNorm · liger · backward",
"labels": {
"liger_version": "0.6.0"
}
},
"apiVersion": "kernelindex.dev/v1alpha1"
},
"protocol": {
"kind": "BenchmarkProtocol",
"spec": {
"harness": {
"name": "Liger-Kernel benchmark scripts",
"repository": "https://github.com/linkedin/Liger-Kernel"
},
"measurement": {
"timer": "cuda_events",
"primaryStatistic": "median"
},
"comparability": {
"notes": "Timed: the backward pass of the module output given a random upstream gradient, 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-backward",
"title": "Liger benchmark harness · backward pass"
},
"apiVersion": "kernelindex.dev/v1alpha1"
},
"environment": {
"kind": "ExecutionEnvironment",
"spec": {
"hardware": {
"vendor": "nvidia",
"product": "NVIDIA H100",
"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 LayerNorm →JSON