cublaslt_fp4_e2m1_scaled_mm_n2048_k2048
GEMM fp4 e2m1 n2048 k2048 · m = 128 · int8 · run 01a00b1b-7c8b…
●passedReported evidence
Primary measurement
49.5µsmean
Rank 1 in its comparison group · source-native comparison · observed 2026-06-06
6.86× reference
Identity
implementationcublaslt_fp4_e2m1_scaled_mm_n2048_k2048
projectFlashInfer-Bench baselines
revisionda915083d4c7c5e61aa3005e3d17ae488e0fc71c
workloadm = 128 · int8
comparison keysha256:53c0fa12c8a91193…
sourceFlashInfer-Bench
external idtrace/cublaslt_fp4_e2m1_scaled_mm_n2048_k2048/1a8114df-fbd2-4b1e-835e-50774c1ed0cf
sha256:b63eaaee89e6f66a3eeedb0…
Correctness
comparatorflashinfer_bench_eval
max absolute error0
max relative error0
resultpassed
Workload
m128
a_fp4int8 [128, 1024]
b_fp4int8 [2048, 1024]
definition comparatorsol_execbench_eval
Measurements
latency · mean49.5 µs
Protocol
harnessflashinfer-bench
timerharness_reported
primaryStatisticmean
correctnessReferencedefinition reference implementation
comparabilityFamilyflashinfer_bench_trace
Environment
gpuNVIDIA B200 (unknown)
cudaToolkit13.0
frameworkpytorch 2.11.0+cu130
Artifacts
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Replications and notes
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{
"run": {
"kind": "BenchmarkRun",
"spec": {
"status": "passed",
"timing": {
"latencyNs": {
"mean": 49509
},
"primaryStatistic": "mean"
},
"observedAt": "2026-06-06T21:37:54.053Z",
"correctness": {
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"maximumAbsoluteError": 0,
"maximumRelativeError": 0
},
"sourceNative": {
"source": "flashinfer-bench",
"metrics": {
"latency_ms": 0.049509000000000004,
"speedup_factor": 6.861587455479475,
"reference_latency_ms": 0.33971033333333334
},
"benchmark": "gemm_fp4_e2m1_n2048_k2048"
},
"protocolDigest": "sha256:7d44d206ad086b4bece35ce31f6531ebb11f07e0d9dcfb74c75be86d3ec02095",
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"implementationDigest": "sha256:7ed6a302f8efd3b2e98d2342e15b2307caec22e80c9540c568fcaee745918386"
},
"metadata": {
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"title": "cublaslt_fp4_e2m1_scaled_mm_n2048_k2048 · gemm_fp4_e2m1_n2048_k2048"
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"apiVersion": "kernelindex.dev/v1alpha1"
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"protocol": {
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},
"measurement": {
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"comparability": {
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"metadata": {
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"title": "FlashInfer-Bench trace harness"
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"environment": {
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"title": "NVIDIA B200 (trace-reported software)"
},
"apiVersion": "kernelindex.dev/v1alpha1"
}
}Cite this record (permalink, digest, access date)
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Published 2026-08-16 · FlashInfer-Bench · Apache-2.0All results for GEMM fp4 e2m1 n2048 k2048 →JSON