Python tf.config.get_logical_device_configuration用法及代碼示例

獲取 tf.config.PhysicalDevice 的虛擬設備配置。

用法

tf.config.get_logical_device_configuration(
    device
)

返回先前通過調用 tf.config.set_logical_device_configuration 配置的 tf.config.LogicalDeviceConfiguration 對象列表。

例如：

physical_devices = tf.config.list_physical_devices('CPU')
assert len(physical_devices) == 1, "No CPUs found"
configs = tf.config.get_logical_device_configuration(
  physical_devices[0])
try:
  assert configs is None
  tf.config.set_logical_device_configuration(
    physical_devices[0],
    [tf.config.LogicalDeviceConfiguration(),
     tf.config.LogicalDeviceConfiguration()])
  configs = tf.config.get_logical_device_configuration(
    physical_devices[0])
  assert len(configs) == 2
except:
  # Cannot modify virtual devices once initialized.
  pass