Not able to understand Tensorboard nodes

Hi,
My code is

class Tenet(nn.Module):
    
    def __init__(self):
        super(Tenet, self).__init__()
        
        self.conv1 = nn.Conv2d(in_channels=3, out_channels=16, kernel_size=(3,3), padding=(3,3), stride=(2,2))

    def forward(self, x):
        
        conv1 = self.conv1(x)
        out = conv1.reshape(conv1.size(0), 32*32, 16)
        
        return out

tenet = Tenet()
rand = torch.randn(1,3,60,60)

out=tenet(rand)

conv1.shape is torch.Size([1, 16, 32, 32])
and out.shape is torch.Size([1, 1024, 16])

After I plotted the architecture on tensorboard, I got:

I don’t understand, what the nodes 28, 29, 30, 31, 34, and 35 are doing really.
Help!