{
  "cells": [
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "Copyright (c) Microsoft Corporation. All rights reserved.\n",
        "\n",
        "Licensed under the MIT License."
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "![Impressions](https://PixelServer20190423114238.azurewebsites.net/api/impressions/MachineLearningNotebooks/how-to-use-azureml/training/train-on-amlcompute/train-on-computeinstance.png)"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "#  Train using Azure Machine Learning Compute Instance\n",
        "\n",
        "* Initialize Workspace\n",
        "* Introduction to ComputeInstance\n",
        "* Create an Experiment\n",
        "* Submit ComputeInstance run\n",
        "* Additional operations to perform on ComputeInstance"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "## Prerequisites\n",
        "If you are using an Azure Machine Learning ComputeInstance, you are all set. Otherwise, go through the [configuration](../../../configuration.ipynb) notebook first if you haven't already to establish your connection to the AzureML Workspace."
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "# Check core SDK version number\n",
        "import azureml.core\n",
        "\n",
        "print(\"SDK version:\", azureml.core.VERSION)"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "## Initialize Workspace\n",
        "\n",
        "Initialize a workspace object"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "tags": [
          "create workspace"
        ]
      },
      "outputs": [],
      "source": [
        "from azureml.core import Workspace\n",
        "\n",
        "ws = Workspace.from_config()\n",
        "print(ws.name, ws.resource_group, ws.location, ws.subscription_id, sep = '\\n')"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "## Introduction to ComputeInstance\n",
        "\n",
        "\n",
        "Azure Machine Learning compute instance is a fully-managed cloud-based workstation optimized for your machine learning development environment. It is created **within your workspace region**.\n",
        "\n",
        "For more information on ComputeInstance, please read [this article](https://docs.microsoft.com/en-us/azure/machine-learning/concept-compute-instance)\n",
        "\n",
        "**Note**: As with other Azure services, there are limits on certain resources (for eg. AmlCompute quota) associated with the Azure Machine Learning service. Please read [this article](https://docs.microsoft.com/azure/machine-learning/service/how-to-manage-quotas) on the default limits and how to request more quota."
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "### Create ComputeInstance\n",
        "First lets check which VM families are available in your region. Azure is a regional service and some specialized SKUs (especially GPUs) are only available in certain regions. Since ComputeInstance is created in the region of your workspace, we will use the supported_vms () function to see if the VM family we want to use ('STANDARD_D3_V2') is supported.\n",
        "\n",
        "You can also pass a different region to check availability and then re-create your workspace in that region through the [configuration notebook](../../../configuration.ipynb)"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "msdoc": "how-to-auto-train-remote.md",
        "name": "check_region"
      },
      "outputs": [],
      "source": [
        "from azureml.core.compute import ComputeTarget, ComputeInstance\n",
        "\n",
        "ComputeInstance.supported_vmsizes(workspace = ws)\n",
        "# ComputeInstance.supported_vmsizes(workspace = ws, location='eastus')"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "msdoc": "how-to-auto-train-remote.md",
        "name": "create_instance"
      },
      "outputs": [],
      "source": [
        "import datetime\n",
        "import time\n",
        "\n",
        "from azureml.core.compute import ComputeTarget, ComputeInstance\n",
        "from azureml.core.compute_target import ComputeTargetException\n",
        "\n",
        "# Choose a name for your instance\n",
        "# Compute instance name should be unique across the azure region\n",
        "compute_name = \"ci{}\".format(ws._workspace_id)[:10]\n",
        "\n",
        "# Verify that instance does not exist already\n",
        "try:\n",
        "    instance = ComputeInstance(workspace=ws, name=compute_name)\n",
        "    print('Found existing instance, use it.')\n",
        "except ComputeTargetException:\n",
        "    compute_config = ComputeInstance.provisioning_configuration(\n",
        "        vm_size='STANDARD_D3_V2',\n",
        "        ssh_public_access=False,\n",
        "        # vnet_resourcegroup_name='<my-resource-group>',\n",
        "        # vnet_name='<my-vnet-name>',\n",
        "        # subnet_name='default',\n",
        "        # admin_user_ssh_public_key='<my-sshkey>'\n",
        "    )\n",
        "    instance = ComputeInstance.create(ws, compute_name, compute_config)\n",
        "    instance.wait_for_completion(show_output=True)"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "## Create An Experiment\n",
        "\n",
        "**Experiment** is a logical container in an Azure ML Workspace. It hosts run records which can include run metrics and output artifacts from your experiments."
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "from azureml.core import Experiment\n",
        "experiment_name = 'train-on-computeinstance'\n",
        "experiment = Experiment(workspace = ws, name = experiment_name)"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "## Submit ComputeInstance run\n",
        "The training script `train.py` is already created for you"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "### Create environment\n",
        "\n",
        "Create an environment with scikit-learn installed."
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "from azureml.core import Environment\n",
        "from azureml.core.conda_dependencies import CondaDependencies\n",
        "\n",
        "myenv = Environment(\"myenv\")\n",
        "myenv.python.conda_dependencies = CondaDependencies.create(conda_packages=['scikit-learn'])"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "### Configure & Run"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "from azureml.core import ScriptRunConfig\n",
        "from azureml.core.runconfig import DEFAULT_CPU_IMAGE\n",
        "\n",
        "src = ScriptRunConfig(source_directory='', script='train.py')\n",
        "\n",
        "# Set compute target to the one created in previous step\n",
        "src.run_config.target = instance\n",
        "\n",
        "# Set environment\n",
        "src.run_config.environment = myenv\n",
        " \n",
        "run = experiment.submit(config=src)"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "Note: if you need to cancel a run, you can follow [these instructions](https://aka.ms/aml-docs-cancel-run)."
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "from azureml.widgets import RunDetails\n",
        "RunDetails(run).show()"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "You can use the get_active_runs() to get the currently running or queued jobs on the compute instance"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "# wait for the run to reach Queued or Running state if it is in Preparing state\n",
        "status = run.get_status()\n",
        "while status not in ['Queued', 'Running', 'Completed', 'Failed', 'Canceled']:\n",
        "   state = run.get_status()\n",
        "   print('Run status: {}'.format(status))\n",
        "   time.sleep(10)"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "# get active runs which are in Queued or Running state\n",
        "active_runs = instance.get_active_runs()\n",
        "for active_run in active_runs:\n",
        "    print(active_run.run_id, ',', active_run.status)"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "run.wait_for_completion()\n",
        "print(run.get_metrics())"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "### Additional operations to perform on ComputeInstance\n",
        "\n",
        "You can perform more operations on ComputeInstance such as get status, change the state or deleting the compute."
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "msdoc": "how-to-auto-train-remote.md",
        "name": "get_status"
      },
      "outputs": [],
      "source": [
        "# get_status() gets the latest status of the ComputeInstance target\n",
        "instance.get_status()"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "msdoc": "how-to-auto-train-remote.md",
        "name": "stop"
      },
      "outputs": [],
      "source": [
        "# stop() is used to stop the ComputeInstance\n",
        "# Stopping ComputeInstance will stop the billing meter and persist the state on the disk.\n",
        "# Available Quota will not be changed with this operation.\n",
        "instance.stop(wait_for_completion=True, show_output=True)"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "msdoc": "how-to-auto-train-remote.md",
        "name": "start"
      },
      "outputs": [],
      "source": [
        "# start() is used to start the ComputeInstance if it is in stopped state\n",
        "instance.start(wait_for_completion=True, show_output=True)"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "# restart() is used to restart the ComputeInstance\n",
        "instance.restart(wait_for_completion=True, show_output=True)"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "# delete() is used to delete the ComputeInstance target. Useful if you want to re-use the compute name \n",
        "# instance.delete(wait_for_completion=True, show_output=True)"
      ]
    }
  ],
  "metadata": {
    "authors": [
      {
        "name": "ramagott"
      }
    ],
    "category": "training",
    "compute": [
      "Compute Instance"
    ],
    "datasets": [
      "Diabetes"
    ],
    "deployment": [
      "None"
    ],
    "exclude_from_index": false,
    "framework": [
      "None"
    ],
    "friendly_name": "Train on Azure Machine Learning Compute Instance",
    "index_order": 1,
    "kernelspec": {
      "display_name": "Python 3.6",
      "language": "python",
      "name": "python36"
    },
    "language_info": {
      "codemirror_mode": {
        "name": "ipython",
        "version": 3
      },
      "file_extension": ".py",
      "mimetype": "text/x-python",
      "name": "python",
      "nbconvert_exporter": "python",
      "pygments_lexer": "ipython3",
      "version": "3.7.7"
    },
    "tags": [
      "None"
    ],
    "task": "Submit a run on Azure Machine Learning Compute Instance."
  },
  "nbformat": 4,
  "nbformat_minor": 2
}