2020.08.31

Agenda:

• OVIS/SOS Python3 Support
  1. Based on the current OVIS/SOS-4 top of tree
  2. Ready for testing
  3. Python2.x support is deprecated in these branches
  4. Please test if you can
• LDMSCON 2020 container available on dockerhub
  • Dockerhub image: https://hub.docker.com/repository/docker/ovishpc/ldmscon2020-single
  • Usage instructions: https://github.com/ovis-hpc/ovis/wiki/LDMSCON2020-single-node-container
• OVIS-5 transition plan
  • OVIS-5 feature-set incrementally back-ported on top of OVIS-4
    • Maintains existing OVIS-4 change history
    • Keeps OVIS change history neat and clean as OVIS-5 features back-ported
    • Maintains single-branch until OVIS-5 released
      • Releases are annotated tags
  • Features sorted by OVIS-4 compatibility
    • Compatible features ported first
    • Configuration change features ported second
    • Wire-protocol incompatible features ported last and require major # change + new branch
• 9/14 meeting is cancelled. We encourage everyone to attend HPCMASPA (Workshop on Monitoring and Analysis for HPC Systems Plus Applications). Attendee registration is FREE!
  1. Panel: Enabling ML approaches to HPC Systems Operations. (9:00-10:30 PACIFIC)
  2. The workshop will be held on Sept 14 6:00 am - 10:30 am PACIFIC.
  3. Agenda and registration info at: https://sites.google.com/view/hpcmaspa2020

Version Discussion:

• Major version number change criteria:
  1. Anything that affects on-the-wire interoperability between ldmsd, i.e.
     1. OVIS-(Major-1) cannot talk to OVIS-(Major)
  2. Schema changes
     1. Case by case
     2. Regardless document in release notes
  3. Configuration files
     1. Case by case
     2. Agree to discuss on as-needed basis based on the change
     3. If for an optional new feature, probably OK since existing configuration files will continue to work without modification
• Minor version number change criteria
  1. Changes that affect out of tree samplers, e.g. plugin-API changes
  2. New features
• Fix level version number change
  1. Everything else

Schema Discussion

• Schema changes should always be documented in release notes
• Need a developer/system-admin session to discuss job_id and app_id usage
• Should job_id/app_id be strings
• Generic SHA256 hash --> string service