Liger fused
Fused add + RMSNorm · rows = 2048 · hidden = 32768 · fp32 · run 01a016af-6014…
●passedReported evidence
Primary measurement
2.01msmedian
Rank 2 in its comparison group · source-native comparison · observed 2026-04-07
ms 20 2.0071232318878174 · ms 50 2.0124319791793823 · ms 80 2.0170559883117676
Identity
implementationLiger fused
projectLiger-Kernel
revisionunknown
workloadrows = 2048 · hidden = 32768 · fp32
comparison keysha256:004526d4542cb43c…
sourceLiger-Kernel benchmarks
external idfused_add_rms_norm/backward/liger_rms_norm/nvidia-h100-80gb-hbm3/hidden32768-rows2048-fp32/2026-04-07-21-27-44
sha256:7103e6f70e07f85e45dd89a…
Correctness
Marked passed by the source; the correctness policy was not published.
Workload
rows2048
hidden32768
xfp32 [2048, 32768]
weightfp32 [32768]
residualfp32 [2048, 32768]
definition comparatornot_asserted
Measurements
latency · median2.01 ms
latency · p202.01 ms
latency · p802.02 ms
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": {
"kind": "BenchmarkRun",
"spec": {
"status": "passed",
"timing": {
"latencyNs": {
"median": 2012432
},
"primaryStatistic": "median"
},
"observedAt": "2026-04-07T21:27:44.000Z",
"measurements": [
{
"unit": "ns",
"value": 2007123,
"metric": "latency",
"statistic": "p20"
},
{
"unit": "ns",
"value": 2017056,
"metric": "latency",
"statistic": "p80"
}
],
"sourceNative": {
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"metrics": {
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"ms_50": 2.0124319791793823,
"ms_80": 2.0170559883117676
},
"benchmark": "fused_add_rms_norm/backward",
"externalId": "fused_add_rms_norm/backward/liger_rms_norm/nvidia-h100-80gb-hbm3/hidden32768-rows2048-fp32/2026-04-07-21-27-44"
},
"protocolDigest": "sha256:080e6e66e4ec75a131aa0c9121c74b8e8eed64e7b6d621d567c6a28f79548be8",
"workloadDigest": "sha256:9eb038140b45708cd14e565e04fc57a8e28c42f3607cdd20643c16bac2dcec10",
"environmentDigest": "sha256:2750ae381d6de582f1eb6b9008e0987463d19ede8af127d97d76c5ae09121393",
"implementationDigest": "sha256:9b417b271806017a7e78c087a31c17a4633f00e5df9c8b3c227d337c5aea8505"
},
"metadata": {
"name": "liger-fused-add-rms-norm-backward-liger-rms-norm-nvidia-h100-80gb-hbm3-hidden32768-rows2048-fp32-202",
"title": "Fused add + RMSNorm · liger_rms_norm · backward",
"labels": {
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}
},
"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 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"
},
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"environment": {
"kind": "ExecutionEnvironment",
"spec": {
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"formFactor": "80GB HBM3",
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},
"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