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Help Center/ ModelArts/ ModelArts User Guide (Standard)/ Image Management/ Application Scenarios of Custom Images

Application Scenarios of Custom Images

Updated on 2024-12-26 GMT+08:00

During the development and runtime of AI services, complex environment dependencies need to be debugged for containerization. In the best practices of AI development in ModelArts, container images are used to provide fixed runtime environments. In this way, dependencies can be managed and the runtime environments can be easily switched. The container resources provided by ModelArts enable quick and efficient AI development and model experiment iteration.

This section describes the concepts of images, application scenarios of preset images and custom images, and how to create a custom image.

Concepts

Preset image: provided by ModelArts. You can select a ModelArts image when creating a notebook instance, training job, or model.

There are two types of preset images:

Custom image: created by user by following the ModelArts image creation specifications.

Base image: used for image creation. A base image can be a ModelArts preset image or a third-party image.

Custom Image Services

  • SWR

    Software Repository for Container (SWR) provides easy, secure, and reliable management over container images throughout their lifecycle, facilitating the deployment of containerized applications. You can upload, download, and manage container images through the SWR console, SWR APIs, or community CLI.

    Your custom images must be uploaded to SWR. The custom images used by ModelArts for training or creating models are obtained from the SWR service management list.

    Figure 1 Obtaining images
  • OBS

    Object Storage Service (OBS) is a cloud storage service optimized for storing massive amounts of data. It provides unlimited, secure, and highly reliable storage capabilities at a relatively low cost.

    ModelArts exchanges data with OBS. You can store data in OBS.

  • ECS

    An Elastic Cloud Server (ECS) is a basic computing unit that consists of vCPUs, memory, OS, and Elastic Volume Service (EVS) disks. After an ECS is created, you can use it as your local PC or physical server.

    You can create a custom image on premises or on an ECS.

NOTE:

When you use a custom image, ModelArts may need to access dependent services, such as SWR and OBS. The custom image can be used only after the access is authorized. It is a good practice to use an agency for authorization. After an agency is configured, the permissions to access dependent services are delegated to ModelArts so that ModelArts can use the dependent services and perform operations on resources on your behalf. For details, see Configuring Agency Authorization.

Application Scenarios of Preset Images

ModelArts provides a group of preset images. You can use a preset image to create a notebook instance. After installing and configuring dependencies on the instance, create a custom image. Then, you can directly use the image in ModelArts for training jobs without any adaptation. You can also use preset images to submit training jobs and create models.

We recommend the preset image version based on your development requirements and stability of the version. If your development can be carried out using versions preset in ModelArts, for example, MindSpore 1.X, use the preset images. They have been fully verified and have many commonly-used installation packages, relieving you from configuring the environment.

The preset images provided by ModelArts by default have the following features:

  • Out-of-the-box and scenario-specific: Typical dependent environments for AI development are preset in these images to provide optimal software, OS, and network configurations. They have been fully tested on hardware to ensure optimal compatibility and performance.
  • Configuration customizable: Preset images are stored in the SWR repository for you to customize and register them as your own images.
  • Secure and reliable: Access policies, user permissions control, vulnerability scanning for development software, and OS are configured based on best practices for security hardening to ensure the security of images.

Application Scenarios of Custom Images

Preset images cannot meet the requirements for deep learning engines and development library. To resolve this issue, ModelArts allows image customization so that you can customize runtime engines.

ModelArts runs in containers. You can customize container images to run on ModelArts. Custom images support CLI parameters and environment variables in free-text format, featuring high flexibility for a wide range of compute engines.

When you create a custom image, use the ModelArts preset image as the base image, that is, obtain the preset image using the SWR address in Dockerfile for image creation. You can obtain the SWR address of the image in the ModelArts preset image list. For details, see Preset Images Supported by ModelArts and .

  • Creating a Custom Image for a Notebook Instance

    If the preset images of notebook instances cannot meet requirements, you can create a custom image by installing and configuring the software and other data required by the environment in a preset image. Then, use the custom image to create new notebook instances. You can also create a custom image based on existing images in notebook instances.

  • Creating a Custom Image for Model Training

    If you have developed a model or training script locally but the AI engine you used is not supported by ModelArts, create a custom image and upload it to SWR. Then, use this image to create a training job on ModelArts and use the resources provided by ModelArts to train models.

  • Creating a Custom Image for Inference

    If you have developed a model using an AI engine that is not supported by ModelArts, to use this model to create AI applications, create a custom image, import the image to ModelArts, and use it to create models. The models created in this way can be centrally managed and deployed as services.

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