Hello guys,
I wrote my cost function with Function
class. Actually I have implemented the forward and backward of my own cost function. I want to know is it possible to debug backward function like forward (There are some logical problems in backward function; I would like to find them). The pdb
has allowed me to debug my forward step by step. But I could not debug backward function like forward. Could you please tell me is it possible?
Thakns
Same way you debug forwards:
import pdb
pdb.set_trace()
Here’s a more complete snippet:
import torch
class MyLoss(torch.autograd.Function):
def forward(self, x):
return x.view(-1).sum(0)
def backward(self, x):
import pdb
pdb.set_trace()
return x
v = torch.autograd.Variable(torch.randn(5, 5), requires_grad=True)
loss = MyLoss()(v)
loss.backward()
4 Likes
Thank you! I did debugging using python -m pdb sourceFile.py
and then used break point setting approaches. i did not know about this approach.