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submission 553311

idanbeck · python · License unknown

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Vendorable · source mirrored · license unknownView source →

No package. Vendor the mirrored source: 27 lines, June 9 Researcher Reciprocity License v1.0.

best_bump.py
curl "https://kernelindex.com/api/v1/implementations/kernelbot-grayscale-v2-553311?include=source"
interfacepython
Compatibility
measured onNVIDIA A100
declared hardwareNVIDIA A100
architecturessm_80
dtypesfp32

Benchmark evidence

1 measurement across 1 GPU, fastest first.

Operation / workload
Hardware
Latency
Rank
Observed
RGB to grayscalesuite of 6 cases
NVIDIA A100
2.49ms
#19 of 137
2026-03-14

Reported · How evidence levels are derived →

Source and license

sourceavailable
revision digestsha256:7c1f15b7f716c9fa1c6212b70ce161db0af3785d058084a6c629239d189c16b8
license declaredunknown
license concludedunknown
authorsidanbeck
imported2026-08-15

Techniques

Extracted from the mirrored source by pattern, never inferred. Each row cites its line.

autotunereturn torch.compile(f, fullgraph=False, mode='max-autotune-no-cudagraphs')
num-warps = 4num_warps = 4

Kernel source

best_bump.py27 lines
#!POPCORN leaderboard grayscale_v2
#!POPCORN gpu A100
import torch
_F=None

def _build():
    def f(x, out):
        out[...] = x[...,0]*0.2989 + x[...,1]*0.5870 + x[...,2]*0.1140
        return out
    try:
        return torch.compile(f, fullgraph=False, mode='max-autotune-no-cudagraphs')
    except Exception:
        return f

@torch.inference_mode()
def custom_kernel(data):
    global _F
    rgb,out=data
    if _F is None:
        _F=_build()
    return _F(rgb, out)

# tge-template: generic cuda knobs
block_size = 256
num_warps = 4
unroll_factor = 2

Source code from GPU Mode and the KernelBot dataset · June 9 Researcher Reciprocity License v1.0

Changes from previous submission

Against this author's previous submission submission 551659.

⋯ 18 unchanged lines
if _F is None:
_F=_build()
return _F(rgb, out)
+
+ # tge-template: generic cuda knobs
+ block_size = 256
+ num_warps = 4
+ unroll_factor = 2

Best evidence level for this revision: reported

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