tf.compat.v1.graph_util.must_run_on_cpu

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Returns True if the given node_def must run on CPU, otherwise False. (deprecated)

node The node to be assigned to a device. Could be either an ops.Operation or NodeDef.
pin_variables_on_cpu If True, this function will return False if node_def represents a variable-related op.

True if the given node must run on CPU, otherwise False.