Using PyCharm debug mode and breakpoints with pytorch-lightning?

[jpilaul]

How can we use PyCharm debugging mode on pytorch-lightning. I am using the latest pytorch-lightning version. At the moment, when I use debug mode, I am unable to view Variables. I think that it's related to a distributed training bug in PyCharm/pytorch debugging mode (https://youtrack.jetbrains.com/issue/PY-39489). It first says "Collecting data" and then I see the following:

I have tried setting gpus=1 but it still hangs at "Collecting data".

[erikhuck]

Big +1 for this. It's very tedious to have to use print statements within my lightning code rather than simply using the PyCharm debugger. Why is this happening???

[walsharry]

I had the same problem. The solution was to set num_workers to 0 while creating the DataLoader object, then it works like normal.

[LindaSt]

I'm having the same issue