Creating quota shares - AWS Batch
Prerequisites

Creating quota shares

Quota shares function as virtual queues within the associated job queue that the AWS Batch scheduler iterates between when scheduling. They enable administrators to allocate a compute quota to a team or project via capacity limits , with explicit configuration for resource sharing strategy.

Prerequisites

Before creating quota shares, ensure you have:

Configure quota shares (AWS Batch console)

  1. Open the AWS Batch console at https://console.aws.amazon.com/batch/.

  2. In the navigation pane, choose Job queues and select a quota management enabled job queue from the list. Choose the job queue name link.

  3. In the Quota shares section, choose Create quota share.

  4. Provide a Name for the quota share.

  5. For Capacity limits, choose Add capacity limits. At least one capacity limit must be specified.

    1. Select an Instance type from the dropdown, and set the Maximum instances this quota share has allocated to it.

    2. (Optional) Choose Add capacity limits and repeat to attach at most five capacity limits.

  6. For Capacity sharing, choose how this quota share shares its capacity with other quota shares in the same job queue:

    • Select Reserve if the quota share should not lend or borrow idle compute.

    • Select Lend if the quota share can lend idle compute to other quota shares.

    • Select Lend and borrow if the quota share can both lend and borrow idle compute, with lent compute reclaimed via cross-share preemption when work arrives.

  7. (Optional) For In-share preemption, choose whether to enable or disable in-share preemption. Enabling in-share preemption allows higher-priority jobs to preempt lower priority jobs that are already in SCHEDULED, STARTING, or RUNNING state. Disabling in-share preemption means that the higher priority jobs will wait for capacity to become available.

  8. Choose Create quota share.

Configure quota shares (AWS CLI)

Use the create-quota-share command to create a quota share. You must choose a resource sharing strategy and whether to enable in-share preemption.

Lend and borrow example

The following example creates a quota share that can lend and borrow idle capacity, with a borrow limit of 100% of its configured capacity limits. It also enables in-share preemption, so higher priority jobs don't wait for lower priority jobs that have been scheduled within SageMaker AI to complete.

aws batch create-quota-share \
  --quota-share-name lend_and_borrow_qs \
  --job-queue my-qm-sagemaker-jq \
  --capacity-limits maxCapacity=5,capacityUnit=ml.m6i.large \
  --resource-sharing-configuration strategy=LEND_AND_BORROW,borrowLimit=100 \
  --preemption-configuration inSharePreemption=ENABLED

Lend only example

Quota shares can be configured to only lend idle capacity, but not borrow it themselves. The following example pairs LEND with disabling in-share preemption.

aws batch create-quota-share \
  --quota-share-name lend_qs \
  --job-queue my-qm-sagemaker-jq \
  --capacity-limits maxCapacity=8,capacityUnit=ml.m6i.large \
  --resource-sharing-configuration strategy=LEND \
  --preemption-configuration inSharePreemption=DISABLED

Reserve example

Quota shares can also be configured to reserve idle capacity. Newly submitted jobs when a quota share has idle capacity may start sooner, but overall queue utilization will be lower if a quota share has no jobs.

aws batch create-quota-share \
  --quota-share-name reserved_qs \
  --job-queue my-qm-sagemaker-jq \
  --capacity-limits maxCapacity=2,capacityUnit=ml.m6i.large \
  --resource-sharing-configuration strategy=RESERVE \
  --preemption-configuration inSharePreemption=DISABLED