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Specifies whether operations are executed synchronously or asynchronously.


TensorFlow can execute operations synchronously or asynchronously. If asynchronous execution is enabled, operations may return "non-ready" handles.

When enable is set to None, an appropriate value will be picked automatically. The value picked may change between TensorFlow releases.


  • enable: Whether operations should be dispatched synchronously. Valid values:
    • None: sets the system default.
    • True: executes each operation synchronously.
    • False: executes each operation asynchronously.