multiprocessing: TypeError: 'numpy.ndarray' object is not callable

Question

I'm trying to use multiprocessing to create a process that performs an inference operation using Keras, so I can monitor the resource usage of that operation (as suggested in response to my previous question here).

For some reason the start method is causing a TypeError that I can't figure out.

worker_process = mp.Process(target=small_model.predict(x_test[0:1]))
worker_process.start()


Process Process-13:
Traceback (most recent call last):
  File "/usr/local/Cellar/python/3.6.4_4/Frameworks/Python.framework/Versions/3.6/lib/python3.6/multiprocessing/process.py", line 258, in _bootstrap
    self.run()
  File "/usr/local/Cellar/python/3.6.4_4/Frameworks/Python.framework/Versions/3.6/lib/python3.6/multiprocessing/process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
TypeError: 'numpy.ndarray' object is not callable

Yassine Faris · Accepted Answer · 2018-04-23 14:14:31Z

1

I assume that small_model.predict is the function for wich you want to create a new process.

worker_process = mp.Process(target=small_model.predict, args=(x_test[0:1],))
worker_process.start()

answered Apr 23, 2018 at 14:14

Yassine Faris

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3 Comments

Philip O'Brien Over a year ago

I just noticed that when run this way the worker process never seems to terminate

Yassine Faris Over a year ago

When you run the function without multi process do it terminate?

Philip O'Brien Over a year ago

Yes, it returns the result very quickly

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