.. _cerebras-autotune:

The CS_AUTOTUNE
===============

The Cerebras AUTOTUNE (``CS_AUTOTUNE``) is similar to the TensorFlow `tf.data.AUTOTUNE <https://www.tensorflow.org/guide/data_performance>`__. When you are targeting the CS system, using ``CS_AUTOTUNE`` instead of ``tf.data.AUTOTUNE`` will result in a better specification of parameters such as:

- ``num_parallel_calls``
- ``cycle_length``
- ``num_parallel_reads``

.. admonition:: Use CS_AUTOTUNE

 	We recommend that you use ``CS_AUTOTUNE`` in place of ``tf.data.AUTOTUNE``.


Using CS_AUTOTUNE
-----------------

Before using ``CS_AUTOTUNE``, make sure to ``import`` it in your code as follows:

.. code-block:: Python

  from cerebras.tf.tools.analyze_input_fn import CS_AUTOTUNE