I got the following error when I load_nvprof.

Traceback (most recent call last):
File "", line 1, in
File "/opt/pytorch/torch/autograd/profiler.py", line 286, in load_nvprof
return EventList(parse_nvprof_trace(path))
File "/opt/pytorch/torch/autograd/profiler.py", line 539, in parse_nvprof_trace
functions.sort(key=lambda evt: evt.start)
File "/opt/pytorch/torch/autograd/profiler.py", line 539, in
functions.sort(key=lambda evt: evt.start)
AttributeError: 'FunctionEvent' object has no attribute 'start'

pytorch version:
0.4.0a0+b69b885

The function works properly on 0.3.1.