Thank you for looking into this, Eta_C.
You are right - it counts up with CPU models, but this seems to break for the same model with DataParallel and CUDA. Please see the code snippet below.
import torch.nn
import torch.nn as nn
import torch.nn.functional as F
class Conv2d(nn.Conv2d):
def init(self, in_channels, out_channels, kernel_size, stride=1,
padding=0, dilation=1, groups=1, bias=True):
super(Conv2d, self).init(in_channels, out_channels, kernel_size, stride,
padding, dilation, groups, bias)
    self.count = 0

def forward(self, x):
    weight = self.weight
    print(self.count)  # always prints 0
    self.count += 1
    return F.conv2d(x, weight, self.bias, self.stride,
                self.padding, self.dilation, self.groups)

net = Conv2d(3, 3, 3)
net = torch.nn.DataParallel(net).cuda()
for _ in range(10):
x = torch.rand(3, 3, 3, 3)
x = x.cuda()
net(x)