该博客介绍了在运行PyTorch程序时遇到的一个常见错误，即尝试在初始化完成前启动新进程。错误提示表明可能未使用`fork`启动子进程，并遗漏了`if __name__ == '__main__':`中的`freeze_support()`调用。解决方案是将代码放入`main`函数中运行，确保在正确环境中执行。
PyTorch错误：The “freeze_support()” line can be omitted if the program is not going to be frozen to produce an executable.
错误代码如下：
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.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.
解决方法
将你要运行的代码块放到main函数中运行即可
if __name__ == '__main__':
#your code
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