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Inclusive prefix sum

82 eligible runs
scan

Inclusive prefix sum (scan) over a 1-D fp32 tensor of size n: each output position holds the cumulative sum of all elements up to it. The checker tolerance is scaled by the square root of the input size for numerical stability.

Fastest reported
1.32ms
submission 500145ağaç.mp4 · License unknown · python

Reported evidence · last observed 2026-02-19. Reported by source; not independently reproduced. License unknown.

No package · vendor the source →View source →Run detail →

Current records

HardwareBest knownImplementationRuns
NVIDIA A1001.32 mssubmission 50014525NVIDIA B200480.1 µssubmission 61245523NVIDIA H100746.5 µssubmission 52252623NVIDIA L49.07 mssubmission 51264911
Source-native comparison · GPU NVIDIA A100 · Workload suite of 11 cases · score · Protocol reference-kernels eval.py · 25 results · last observed 2026-05-15Record history →
#
Implementation
Latency
vs #1
Trust
Observed
1
submission 500145ağaç.mp4
1.32ms
1.00×
Reported · license unknown · source
2026-02-19stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
2
submission 523188mreso
1.36ms
1.03×
Reported · license unknown · source
2026-03-10stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
3
submission 782592Kernel-Zhang
1.38ms
1.04×
Reported · license unknown · source
2026-05-15

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
4
submission 132601Nader
1.39ms
1.05×
Reported · license unknown · source
2025-12-08stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
5
submission 782561Kernel-Zhang
1.39ms
1.05×
Reported · license unknown · source
2026-05-14

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
6
submission 782559Kernel-Zhang
1.39ms
1.05×
Reported · license unknown · source
2026-05-14

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
7
submission 782457Kernel-Zhang
1.41ms
1.06×
Reported · license unknown · source
2026-05-12

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
8
submission 545035rajesh0042
1.41ms
1.07×
Reported · license unknown · source
2026-03-13stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
9
submission 512318burtenshaw
1.42ms
1.07×
Reported · license unknown · source
2026-03-02stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
10
submission 512313burtenshaw
1.42ms
1.08×
Reported · license unknown · source
2026-03-02stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
11
submission 512667mreso
1.81ms
1.37×
Reported · license unknown · source
2026-03-04stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
12
submission 614137dannywillowliu-uchi
1.85ms
1.40×
Reported · license unknown · source
2026-03-23stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
13
submission 512651mreso
1.90ms
1.43×
Reported · license unknown · source
2026-03-04stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
14
submission 512629mreso
1.90ms
1.44×
Reported · license unknown · source
2026-03-04stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
15
submission 102325supremefather
2.74ms
2.07×
Reported · license unknown · source
2025-11-25stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
16
submission 512298burtenshaw
2.74ms
2.07×
Reported · license unknown · source
2026-03-02stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
17
submission 102359Raine
2.81ms
2.13×
Reported · license unknown · source
2025-11-25stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
18
submission 66313achal
3.54ms
2.68×
Reported · license unknown · source
2025-10-28stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
19
submission 93695Petr_Rocoss
4.58ms
3.46×
Reported · license unknown · source
2025-11-20stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
20
submission 780438Kernel-Zhang
5.05ms
3.82×
Reported · license unknown · source
2026-04-28

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
21
submission 66267SeanP
7.20ms
5.45×
Reported · license unknown · source
2025-10-25stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
22
submission 66312achal
11.0ms
8.33×
Reported · license unknown · source
2025-10-27stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
23
submission 93688Petr_Rocoss
12.3ms
9.27×
Reported · license unknown · no source
2025-11-20stale

Measured exactly what you asked. Reported by source; not independently reproduced.

no sourcelicense unknownno install recipeRun detail →
24
submission 66191achal
13.5ms
10.21×
Reported · license unknown · source
2025-10-17stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →
25
submission 102253supremefather
629.0ms
475.69×
Reported · license unknown · source
2025-11-25stale

Measured exactly what you asked. Reported by source; not independently reproduced.

source mirroredlicense unknownno install recipeView source →Run detail →

Implementations

Implementation
Runtime
Best latency
Evidence
Availability
submission 500145ağaç.mp4
python
1.32ms
2.75×
Reported
license unknown · source
submission 523188mreso
python
1.36ms
2.83×
Reported
license unknown · source
submission 782592Kernel-Zhang
python
1.38ms
2.88×
Reported
license unknown · source
submission 132601Nader
python
1.39ms
2.89×
Reported
license unknown · source
submission 545035rajesh0042
python
1.41ms
2.94×
Reported
license unknown · source
submission 512318burtenshaw
python
1.42ms
2.96×
Reported
license unknown · source
submission 614137dannywillowliu-uchi
python
1.85ms
3.85×
Reported
license unknown · source
submission 102325supremefather
python
2.74ms
5.70×
Reported
license unknown · source
Show all 82 implementations ›
submission 102359Raine
python
2.81ms
5.85×
Reported
license unknown · source
submission 66313achal
python
3.54ms
7.38×
Reported
license unknown · source
submission 93695Petr_Rocoss
python
4.58ms
9.53×
Reported
license unknown · source
submission 66267SeanP
python
7.20ms
15.00×
Reported
license unknown · source
submission 512629mreso
python
1.90ms
3.95×
Reported
license unknown · source
submission 512651mreso
python
1.90ms
3.95×
Reported
license unknown · source
submission 512667mreso
python
1.81ms
3.78×
Reported
license unknown · source
submission 780438Kernel-Zhang
python
5.05ms
10.52×
Reported
license unknown · source
submission 782457Kernel-Zhang
python
1.41ms
2.93×
Reported
license unknown · source
submission 782559Kernel-Zhang
python
1.39ms
2.90×
Reported
license unknown · source
submission 782561Kernel-Zhang
python
1.39ms
2.89×
Reported
license unknown · source
submission 512298burtenshaw
python
2.74ms
5.70×
Reported
license unknown · source
submission 512313burtenshaw
python
1.42ms
2.97×
Reported
license unknown · source
submission 102253supremefather
python
629.0ms
1310.01×
Reported
license unknown · source
submission 66191achal
python
13.5ms
28.12×
Reported
license unknown · source
submission 66312achal
python
11.0ms
22.94×
Reported
license unknown · source
submission 612455dannywillowliu-uchi
python
480.1µs
1.00×
Reported
license unknown · source
submission 513376JordanNanos
python
483.7µs
1.01×
Reported
license unknown · source
submission 512604mreso
python
489.5µs
1.02×
Reported
license unknown · source
submission 500141ağaç.mp4
python
543.2µs
1.13×
Reported
license unknown · source
submission 779863ajay_a
python
544.9µs
1.13×
Reported
license unknown · source
submission 132594Nader
python
551.3µs
1.15×
Reported
license unknown · source
submission 183714tomaszki
python
638.8µs
1.33×
Reported
license unknown · source
submission 512325burtenshaw
python
718.9µs
1.50×
Reported
license unknown · source
submission 545311rajesh0042
python
719.4µs
1.50×
Reported
license unknown · source
submission 102327supremefather
python
780.8µs
1.63×
Reported
license unknown · source
submission 102362Raine
python
781.2µs
1.63×
Reported
license unknown · source
submission 673503Elán Zainos Corona
python
2.20ms
4.58×
Reported
license unknown · source
submission 93696Petr_Rocoss
python
4.52ms
9.41×
Reported
license unknown · source
submission 768762sophia
python
8.85s
18435.22×
Reported
license unknown · source
submission 612258dannywillowliu-uchi
python
553.4µs
1.15×
Reported
license unknown · source
submission 612308dannywillowliu-uchi
python
483.8µs
1.01×
Reported
license unknown · source
submission 612406dannywillowliu-uchi
python
482.1µs
1.00×
Reported
license unknown · source
submission 512880JordanNanos
python
3.27ms
6.80×
Reported
license unknown · source
submission 513113JordanNanos
python
484.8µs
1.01×
Reported
license unknown · source
submission 500137ağaç.mp4
python
631.6µs
1.32×
Reported
license unknown · source
submission 545192rajesh0042
python
722.1µs
1.50×
Reported
license unknown · source
submission 522526tomaszki
python
746.5µs
1.55×
Reported
license unknown · source
submission 523190mreso
python
831.5µs
1.73×
Reported
license unknown · source
submission 500156ağaç.mp4
python
866.8µs
1.81×
Reported
license unknown · source
submission 132600Nader
python
870.5µs
1.81×
Reported
license unknown · source
submission 545058rajesh0042
python
1.02ms
2.12×
Reported
license unknown · source
submission 512452burtenshaw
python
1.02ms
2.12×
Reported
license unknown · source
submission 759321Zeyu Li
python
1.05ms
2.19×
Reported
license unknown · source
submission 614139dannywillowliu-uchi
python
1.06ms
2.20×
Reported
license unknown · source
submission 756978ethan0027
python
1.06ms
2.21×
Reported
license unknown · source
submission 526905KernelAgent
python
1.27ms
2.64×
Reported
license unknown · source
submission 102363Raine
python
1.59ms
3.31×
Reported
license unknown · source
submission 102328supremefather
python
1.59ms
3.31×
Reported
license unknown · source
submission 93697Petr_Rocoss
python
7.20ms
15.00×
Reported
license unknown · source
submission 489481jackkhuu
python
3.52s
7325.39×
Reported
license unknown · source
submission 522494tomaszki
python
761.7µs
1.59×
Reported
license unknown · source
submission 512601mreso
python
946.9µs
1.97×
Reported
license unknown · source
submission 500146ağaç.mp4
python
874.5µs
1.82×
Reported
license unknown · source
submission 500154ağaç.mp4
python
872.0µs
1.82×
Reported
license unknown · source
submission 512324burtenshaw
python
1.02ms
2.13×
Reported
license unknown · source
submission 757213Zeyu Li
python
1.08ms
2.25×
Reported
license unknown · source
submission 757709Zeyu Li
python
1.07ms
2.23×
Reported
license unknown · source
submission 510383KernelAgent
python
1.98ms
4.12×
Reported
license unknown · source
submission 510644KernelAgent
python
1.44ms
3.01×
Reported
license unknown · source
submission 512649mreso
python
9.07ms
18.88×
Reported
license unknown · source
submission 512437burtenshaw
python
9.15ms
19.05×
Reported
license unknown · source
submission 500151ağaç.mp4
python
9.15ms
19.05×
Reported
license unknown · source
submission 132603Nader
python
9.22ms
19.21×
Reported
license unknown · source
submission 545075rajesh0042
python
9.23ms
19.22×
Reported
license unknown · source
submission 102316Raine
python
18.2ms
38.00×
Reported
license unknown · source
submission 93698Petr_Rocoss
python
84.4ms
175.86×
Reported
license unknown · source
submission 512630mreso
python
13.3ms
27.72×
Reported
license unknown · source
submission 512647mreso
python
9.07ms
18.89×
Reported
license unknown · source
submission 512326burtenshaw
python
9.23ms
19.22×
Reported
license unknown · source
submission 102250Raine
python
527.2ms
1098.12×
Reported
license unknown · source
submission 93688Petr_Rocoss
python
12.3ms
25.54×
Reported
license unknown · no source
submission 673499Elán Zainos Corona
python
2.44ms
5.08×
Reported
license unknown · no source
submission 671092Elán Zainos Corona
python
3.25ms
6.77×
Reported
license unknown · no source

Semantics

Inputs and outputs
datafp32 [size]
outputfp32 [size]
Axes and behavior
seedvariable
sizevariable
determinismunspecified
constraintsNo mutation or aliasing
Identity
aliasinclusive prefix sumaliasprefixsum_v2sha2568ae778a4de38…
Sources: GPU MODE KernelBot (2026-05-15) · June 9 Researcher Reciprocity License v1.0last observed 2026-05-15How records are decidedJSON