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PyTorch eager

PyTorch · python · MIT

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No package. Vendor the mirrored source: 36 lines, MIT.

66_Matmul_Dropout_Softmax.py
curl "https://kernelindex.com/api/v1/implementations/kernelbench-l2-66-matmul-dropout-softmax-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
Matmul Dropout Softmaxfp32 · [128, 16384]
NVIDIA H100
1.44ms±0.00
#1 of 2
2026-03-05
Matmul Dropout Softmaxfp32 · [128, 16384]
NVIDIA H100
2.17ms±0.01
#1 of 2
2026-03-05

Reported · How evidence levels are derived →

Source and license

sourceavailable
revision digestsha256:87002d74cbe9385e02ae2b073f5db9904cc31a47da7e29ce80399d400d71027c
license declaredMIT
license concludedMIT
imported2026-08-26

Kernel source

66_Matmul_Dropout_Softmax.py36 lines
import torch
import torch.nn as nn

class Model(nn.Module):
    """
    A model that performs matrix multiplication, applies dropout, and then applies softmax.
    """
    def __init__(self, in_features, out_features, dropout_p):
        super(Model, self).__init__()
        self.matmul = nn.Linear(in_features, out_features)
        self.dropout = nn.Dropout(dropout_p)

    def forward(self, x):
        """
        Args:
            x (torch.Tensor): Input tensor of shape (batch_size, in_features).

        Returns:
            torch.Tensor: Output tensor of shape (batch_size, out_features).
        """
        x = self.matmul(x)
        x = self.dropout(x)
        x = torch.softmax(x, dim=1)  # Softmax over features
        return x

batch_size = 128
in_features = 16384
out_features = 16384
dropout_p = 0.2

def get_inputs():
    return [torch.rand(batch_size, in_features)]

def get_init_inputs():
    return [in_features, out_features, dropout_p]
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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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