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PyTorch eager

PyTorch · python · MIT

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No package. Vendor the mirrored source: 40 lines, MIT.

34_InstanceNorm.py
curl "https://kernelindex.com/api/v1/implementations/kernelbench-l1-34-instancenorm-torch?include=source"
interfacepython · torch_eager
symbolModel.forward
Compatibility
measured onNVIDIA H100
declared hardwaredeclared only
architectures—
dtypes

Benchmark evidence

2 measurements across 1 GPU, fastest first.

Operation / workload
Hardware
Latency
Rank
Observed
InstanceNormfp32 · [112, 64, 512, 512]
NVIDIA H100
9.61ms±0.08
#2 of 2
2026-03-05
InstanceNormfp32 · [112, 64, 512, 512]
NVIDIA H100
13.9ms±0.00
#2 of 2
2026-03-05

Reported · How evidence levels are derived →

Source and license

sourceavailable
revision digestsha256:d74a9bc00917bdc521e7445aeca150b3eccdf041f09fa9c69edc14632b088437
license declaredMIT
license concludedMIT
imported2026-08-26

Kernel source

34_InstanceNorm.py40 lines
import torch
import torch.nn as nn

class Model(nn.Module):
    """
    Simple model that performs Instance Normalization.
    """
    def __init__(self, num_features: int):
        """
        Initializes the InstanceNorm layer.

        Args:
            num_features (int): Number of features in the input tensor.
        """
        super(Model, self).__init__()
        self.inorm = nn.InstanceNorm2d(num_features=num_features)

    def forward(self, x: torch.Tensor) -> torch.Tensor:
        """
        Applies Instance Normalization to the input tensor.

        Args:
            x (torch.Tensor): Input tensor of shape (batch_size, num_features, height, width).

        Returns:
            torch.Tensor: Output tensor with Instance Normalization applied, same shape as input.
        """
        return self.inorm(x)

batch_size = 112  # heavier workload
features = 64
dim1 = 512
dim2 = 512

def get_inputs():
    x = torch.rand(batch_size, features, dim1, dim2)
    return [x]

def get_init_inputs():
    return [features]
scrolls · 40 lines total

Source code from KernelBench, © 2023 Anne Ouyang, Simon Guo, Azalia Mirhoseini (Scaling Intelligence Lab, Stanford University), MIT License · MIT

Best evidence level for this revision: reported

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