runtime-error-attemp-to-start-a-new-process-before-the-current-process
2024-01-15
langs
multiprocessing
python
RuntimeError:
Attempt to start a new process before the current process
has finished its bootstrapping phase.
This probably means that you are on Windows and you have
forgotten to use the proper idiom in the main module:
if name == 'main':
freeze_support()
...
The "freeze_support()" line can be omitted if the program
is not going to be frozen to produce a Windows executable.SolutionAs the note said, add __main__`` guard and add freeze_support()` and the begining.if __name__ == "__main__":
# multiprocessing.freeze_support() # may be not needed
start = time.time()
...Ref:https://discuss.pytorch.org/t/runtimeerror-an-attempt-has-been-made-to-start-a-new-process-before-the-current-process-has-finished-its-bootstrapping-phase/145462/