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ADD-BACKEND.md

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How to add new backend to the scoreboard?

The following tutorial provides steps needed to add an ONNX backend named new_backend to the Scoreboard.

1. Prepare Dockerfile

Use the dockerfile template from examples to create Dockerfile for a new runtime.

Find and edit code marked ## ONNX Backend dependencies ##.

  • Set ONNX_BACKEND variable to the Python dotted path of the ONNX backend module which provides an implementation of the onnx.backend.base.Backend interface class.
  • Write commands required to install all dependencies.
  • If you use a release version of the backend, place your Dockerfile in runtimes/{new-backend}/stable.
  • You an also track a development version of the backend. In this case store the file in runtimes/{new-backend}/development.
############## ONNX Backend dependencies ###########
ENV ONNX_BACKEND="{new_backend.backend}"

# Install dependencies
RUN pip install onnx
RUN pip install {new_backend}

####################################################

2. Update configuration

  • Add your backend to the config.json file. Use the stable or development section as appropriate.


For stable version:

"new_backend": {
            "name": "New Backend",
            "results_dir": "./results/new_backend/stable",
            "core_packages": ["new-backend"]
        }

For development version the core_packages list is optional:

"new_backend": {
            "name": "New Backend",
            "results_dir": "./results/new-backend/development",
        }

3. Add new job to Azure pipelines

- job: new_backend
    timeoutInMinutes: 90
    steps:
    - checkout: self
      persistCredentials: true
      clean: true

    - task: InstallSSHKey@0
      inputs:
        knownHostsEntry: ~/.ssh/known_hosts
        sshPublicKey: $(public_deploy_key)
        sshKeySecureFile: deploy_key

    - script: docker build -t scoreboard/new_backend -f runtimes/new_backend/stable/Dockerfile .
      displayName: 'Build docker image'

    - script: . setup/git-setup.sh
      displayName: 'Git setup'

    - script: docker run --name new_backend --env-file setup/env.list -v `pwd`/results/new_backend/stable:/root/results scoreboard/new_backend || true
      displayName: 'Run docker container'

    - script: . setup/git-deploy-results.sh
      displayName: 'Deploy results'