===================================== SageMaker TensorFlow Training Toolkit

The SageMaker TensorFlow Training Toolkit is an open source library for making the TensorFlow framework run on Amazon SageMaker <https://aws.amazon.com/documentation/sagemaker/>__.

This repository also contains Dockerfiles which install this library, TensorFlow, and dependencies for building SageMaker TensorFlow images.

For information on running TensorFlow jobs on SageMaker:

• SageMaker Python SDK documentation <https://sagemaker.readthedocs.io/en/stable/using_tf.html>__
• SageMaker Notebook Examples <https://github.com/awslabs/amazon-sagemaker-examples>__

Table of Contents

. Getting Started <#getting-started>__

. Building your Image <#building-your-image>__

. Running the tests <#running-the-tests>__

Getting Started

Prerequisites

Make sure you have installed all of the following prerequisites on your
development machine:

- `Docker <https://www.docker.com/>`__

For Testing on GPU
^^^^^^^^^^^^^^^^^^

-  `Nvidia-Docker <https://github.com/NVIDIA/nvidia-docker>`__

Recommended
^^^^^^^^^^^

-  A Python environment management tool. (e.g.
   `PyEnv <https://github.com/pyenv/pyenv>`__,
   `VirtualEnv <https://virtualenv.pypa.io/en/stable/>`__)

Building your Image
-------------------

`Amazon SageMaker <https://aws.amazon.com/documentation/sagemaker/>`__
utilizes Docker containers to run all training jobs & inference endpoints.

The Docker images are built from the Dockerfiles specified in
`docker/ <https://github.com/aws/sagemaker-tensorflow-containers/tree/master/docker>`__.

The Dockerfiles are grouped based on TensorFlow version and separated
based on Python version and processor type.

The Dockerfiles for TensorFlow 2.0+ are available in the
`tf-2 <https://github.com/aws/sagemaker-tensorflow-container/tree/tf-2>`__ branch.

To build the images, first copy the files under
`docker/build_artifacts/ <https://github.com/aws/sagemaker-tensorflow-container/tree/tf-2/docker/build_artifacts>`__
to the folder container the Dockerfile you wish to build.

::

    # Example for building a TF 2.1 image with Python 3
    cp docker/build_artifacts/* docker/2.1.0/py3/.

After that, go to the directory containing the Dockerfile you wish to build,
and run ``docker build`` to build the image.

::

    # Example for building a TF 2.1 image for CPU with Python 3
    cd docker/2.1.0/py3
    docker build -t tensorflow-training:2.1.0-cpu-py3 -f Dockerfile.cpu .

Don't forget the period at the end of the ``docker build`` command!

Running the tests
-----------------

Running the tests requires installation of the SageMaker TensorFlow Training Toolkit code and its test
dependencies.

::

    git clone https://github.com/aws/sagemaker-tensorflow-container.git
    cd sagemaker-tensorflow-container
    pip install -e .[test]

Tests are defined in
`test/ <https://github.com/aws/sagemaker-tensorflow-container/tree/master/test>`__
and include unit, integration and functional tests.

Unit Tests

If you want to run unit tests, then use:

::

# All test instructions should be run from the top level directory
pytest test/unit

Integration Tests

Running integration tests require `Docker <https://www.docker.com/>`__ and `AWS
credentials <https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html>`__,
as the integration tests make calls to a couple AWS services. The integration and functional
tests require configurations specified within their respective
`conftest.py <https://github.com/aws/sagemaker-tensorflow-containers/blob/master/test/integration/conftest.py>`__.Make sure to update the account-id and region at a minimum.

Integration tests on GPU require `Nvidia-Docker <https://github.com/NVIDIA/nvidia-docker>`__.

Before running integration tests:

#. Build your Docker image.
#. Pass in the correct pytest arguments to run tests against your Docker image.

If you want to run local integration tests, then use:

::

    # Required arguments for integration tests are found in test/integ/conftest.py
    pytest test/integration --docker-base-name <your_docker_image> \
                            --tag <your_docker_image_tag> \
                            --framework-version <tensorflow_version> \
                            --processor <cpu_or_gpu>

::

    # Example
    pytest test/integration --docker-base-name preprod-tensorflow \
                            --tag 1.0 \
                            --framework-version 1.4.1 \
                            --processor cpu

Functional Tests

Functional tests are removed from the current branch, please see them in older branch r1.0 <https://github.com/aws/sagemaker-tensorflow-container/tree/r1.0#functional-tests>__.

Contributing

Please read CONTRIBUTING.md <https://github.com/aws/sagemaker-tensorflow-containers/blob/master/CONTRIBUTING.md>__ for details on our code of conduct, and the process for submitting pull requests to us.

License

SageMaker TensorFlow Containers is licensed under the Apache 2.0 License. It is copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved. The license is available at: http://aws.amazon.com/apache2.0/