masterConfig property

The configuration for your master worker.

You should only set masterConfig.acceleratorConfig if masterType is set to a Compute Engine machine type. Learn about [restrictions on accelerator configurations for training.](/ai-platform/training/docs/using-gpus#compute-engine-machine-types-with-gpu) Set masterConfig.imageUri only if you build a custom image. Only one of masterConfig.imageUri and runtimeVersion should be set. Learn more about [configuring custom containers](/ai-platform/training/docs/distributed-training-containers).

Optional.