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hyperopt / hyperopt-sklearn

Hyper-parameter optimization for sklearn
hyperopt.github.io/hyperopt-sklearn
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RuntimeError freeze_support() issue #172

Open monex-p opened 3 years ago

monex-p commented 3 years ago

I run into this error:

RuntimeError: An attempt has been made to start a new process before the current process has finished its bootstrapping phase.

    This probably means that you are not using fork to start your
    child processes 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 an executable.

It seems like it is something to do with pytorch. Can someone resolve this issue please? The example for hpsklearn also ran into the same error. Thanks a lot.

bjkomer commented 3 years ago

Are you using Windows? This looks like an issue that can appear with Python on Windows when multiprocessing is involved. See here for a solution. Duplicate of #163