examples

OpenPAI Job Examples

Table of Contents

• Quick start: how to write and submit a CIFAR-10 job
• List of off-the-shelf examples
• List of customized job template
• Contributing

Quick start: how to write and submit a CIFAR-10 job

(1) Prepare a job json file

In this section, we will use CIFAR-10 training job as an example to explain how to write and submit a job in OpenPAI.

CIFAR-10 is an established computer-vision dataset used for image classification.

• Full example for tensorflow cifar10 image classification training on OpenPAI:

{
  // Name for the job, need to be unique
  "jobName": "tensorflow-cifar10",
  // URL pointing to the Docker image for all tasks in the job
  "image": "openpai/pai.example.tensorflow",
  // Data directory existing on HDFS
  "dataDir": "/tmp/data",
  // Output directory on HDFS, 
  "outputDir": "/tmp/output",
  // List of taskRole, one task role at least
  "taskRoles": [
    {
      // Name for the task role
      "name": "cifar_train",
      // Number of tasks for the task role, no less than 1
      "taskNumber": 1,
      // CPU number for one task in the task role, no less than 1
      "cpuNumber": 8,
      // Memory for one task in the task role, no less than 100
      "memoryMB": 32768,
      // GPU number for one task in the task role, no less than 0
      "gpuNumber": 1,
      // Executable command for tasks in the task role, can not be empty
      "command": "git clone https://github.com/tensorflow/models && cd models/research/slim && python download_and_convert_data.py --dataset_name=cifar10 --dataset_dir=$PAI_DATA_DIR && python train_image_classifier.py --batch_size=64 --model_name=inception_v3 --dataset_name=cifar10 --dataset_split_name=train --dataset_dir=$PAI_DATA_DIR --train_dir=$PAI_OUTPUT_DIR"
    }
  ]
}

• Save content to a file. Name this file as cifar10.json

• Job configuration items introduction

(2) Submit job json file from OpenPAI webportal

Users can refer to this tutorial submit a job in web portal for job submission from OpenPAI webportal.

List of off-the-shelf examples

Examples which can be run by submitting the json straightly without any modification.

• tensorflow.cifar10.json: Single GPU trainning on CIFAR-10 using TensorFlow.
• pytorch.mnist.json: Single GPU trainning on MNIST using PyTorch.
• pytorch.regression.json: Regression using PyTorch.
• mxnet.autoencoder.json: Autoencoder using MXNet.
• mxnet.image-classification.json: Image
• serving.tensorflow.json: TensorFlow model serving. classification on MNIST using MXNet.

List of customized job template

These user could customize and run these jobs over OpenPAI.

• TensorFlow:

  1. TensorFlow CIFAR-10 image classification
  2. TensorFlow ImageNet image classification
  3. Distributed TensorFlow CIFAR-10 image classification
  4. TensorFlow Tensorboard

• Keras:

  1. MNIST training job over keras.

• Jupyter:

  1. MNIST over Jupyter Notebook. User can also treat this job as an example how to use Jupyter over OpenPAI

• Model Serving:

  1. MNIST model serving over Tensorflow

• Scikit-Learn:

  1. Scikit-Learn MNIST digit recognition
  2. Scikit-Learn text-vectorizers

• CNTK:

  1. CNTK grapheme-to-phoneme

• PyTorch:

  1. PyTorch MNIST digit recognition
  2. PyTorch regression

• MXNet:

  1. MXNet autoencoder
  2. MXNet image classification

• Open MPI:

  1. Open MPI TensorFlow CIFAR-10
  2. Open MPI CNTK grapheme-to-phoneme conversion

Contributing

If you want to contribute a job example that can be run on PAI, please open a new pull request.

• Prepare a folder under pai/examples folder, for example create pai/examples/caffe2/

• Prepare example files:

  Under Caffe2 example dir, user should prepare these files for an example's contribution PR:

1. README.md: Example's introductions
2. Dockerfile: Example's dependencies
3. Pai job json file: Example's OpenPAI job json template
4. [Optional] Code file: Example's code file