PyTorch
SwiGLU activation, Megatron layout · ffn = 32768 · seq = 2048 · batch = 4 · bf16 · run 01a0202b-241b…
●passedReported evidence
Primary measurement
5.08msmedian
Rank 4 in its comparison group · source-native comparison · observed 2026-07-26
ms 20 5.082399845123291 · ms 50 5.0830078125 · ms 80 5.084876918792725
Identity
implementationPyTorch
projectPyTorch
revisionunknown
workloadffn = 32768 · seq = 2048 · batch = 4 · bf16
comparison keysha256:7f306d61226fbda1…
sourceLiger-Kernel benchmarks
external idmegatron_swiglu/backward/megatron/nvidia-h100-80gb-hbm3/batch4-ffn32768-seq2048-bf16/2026-07-26-00-09-55
sha256:f1d5b7b4955b65451a814d8…
Correctness
Marked passed by the source; the correctness policy was not published.
Workload
ffn32768
seq2048
batch4
ybf16 [2048, 4, 65536]
definition comparatornot_asserted
Measurements
latency · median5.08 ms
latency · p205.08 ms
latency · p805.08 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": {
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"spec": {
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"timing": {
"latencyNs": {
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"observedAt": "2026-07-26T00:09:55.000Z",
"measurements": [
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{
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"metric": "latency",
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}
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"metadata": {
"name": "liger-megatron-swiglu-backward-megatron-nvidia-h100-80gb-hbm3-batch4-ffn32768-seq2048-bf16-2026-07-2",
"title": "SwiGLU activation, Megatron layout · megatron · backward",
"labels": {
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}
},
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},
"protocol": {
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"spec": {
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},
"measurement": {
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},
"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.",
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"title": "Liger benchmark harness · backward pass"
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},
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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 SwiGLU activation, Megatron layout →JSON