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Return a list of physical devices visible to the runtime.
Aliases:
tf.compat.v1.config.experimental.list_physical_devices
tf.compat.v2.config.experimental.list_physical_devices
tf.config.experimental.list_physical_devices(device_type=None)
Physical devices are hardware devices locally present on the current machine.
By default all discovered CPU and GPU devices are considered visible. The
list_physical_devices
allows querying the hardware prior to runtime
initialization.
The following example ensures the machine can see at least 1 GPU.
physical_devices = tf.config.experimental.list_physical_devices('GPU')
assert len(physical_devices) > 0, "No GPUs found."
Args:
device_type
: (optional) Device type to filter by such as "CPU" or "GPU"
Returns:
List of PhysicalDevice objects