tf.config.experimental.list_physical_devices

Return a list of physical devices visible to the runtime.

View aliases

Compat aliases for migration

See Migration guide for more details.

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