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AWS ParallelCluster v2.4.1

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@demartinofra demartinofra released this 29 Jul 10:32
· 34 commits to master since this release
v2.4.1
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Learn about vigilant mode.

We're excited to announce the release of AWS ParallelCluster Node 2.4.1.

This is associated with AWS ParallelCluster v2.4.1.

Enhancements

  • Torque:
    • process nodes added to or removed from the cluster in batches in order to speed up cluster scaling.
    • scale up only if required slots/nodes can be satisfied
    • scale down if pending jobs have unsatisfiable CPU/nodes requirements
    • add support for jobs in hold/suspended state (this includes job dependencies)
    • automatically terminate and replace faulty or unresponsive compute nodes
    • add retries in case of failures when adding or removing nodes
    • add support for ncpus reservation and multi nodes resource allocation (e.g. -l nodes=2:ppn=3+3:ppn=6)

Changes

  • Drop support for Python 2. Node daemons now support Python >= 3.5.
  • Torque: trigger a scheduling cycle every 1 minute when there are pending jobs in the queue. This is done in order
    to speed up jobs scheduling with a dynamic cluster size.

Bug Fixes

  • Restore logic that was automatically adding compute nodes identity to known_hosts file.
  • Slurm: fix issue that was causing the daemons to fail when the cluster is stopped and an empty compute nodes file
    is imported in Slurm config.
  • Torque: fix command to disable hosts in the scheduler before termination.

Support

Need help / have a feature request?
AWS Support: https://console.aws.amazon.com/support/home
ParallelCluster Issues tracker on GitHub: https://github.com/aws/aws-parallelcluster
The HPC Forum on the AWS Forums page: https://forums.aws.amazon.com/forum.jspa?forumID=192

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