CCPP Framework Meeting Minutes 2021 05 18

Agenda

• capgen.py progress
• Transition to capgen.py
• Process for creating a master cross-lab standard name resource
• Other business

capgen.py process

• Process forward with getting capgen ready for the UFS
  • One DTC deliverable is to transition NCAR developments of the CCPP framework to the UFS
  • Our current timeline foresees to transition to capgen by the end of June 2021, this may not be realistic
  • How is capgen used currently in the NCAR models? Is it fully functional?
    • Cheryl is using a branch in Steve's fork
    • MPAS+CCPP is still work in progress, target is end of June for running a CCPP suite in MPAS
  • How many of the current ccpp_prebuild capabilities are still missing
    • List of open issues should give us an answer
  • Steve and Dom will meet on Thursday to discuss how to work together on capgen
    • Steve will merge his fork into the feature/capgen branch before the meeting

Transition to capgen.py

• What metadata does ccpp_prebuild expect for DDTs etc, and what capgen?
  • to be discussed with this group next week

Process for creating a master cross-lab standard name resource

• Discussion on how to capture tags or versions of ESCOMP/CCPPStandardNames repo
• PRs for ccpp-physics and CCPPStandardNames:
  • https://github.com/NCAR/ccpp-physics/pull/637 - some b4b issues with SCM to resolve, not tested with UFS yet
  • https://github.com/ESCOMP/CCPPStandardNames/pull/13
    • Vertical dimension: vertical_dimension, vertical_dimension_plus_one`
    • Interface, layer: layer is the default, thus omit; if it is on interfaces then add interface identifier
• Existing PRs cover about 2/3 of the existing standard names in the UFS, 1/3 is still missing
• Still need to submit a set of proposed rules to the repository
• Spreadsheet: https://meet.google.com/linkredirect?authuser=0&dest=https%3A%2F%2Fdocs.google.com%2Fspreadsheets%2Fd%2F1kWDC7_2sagm-PTP_tXaGyI3O3sJFK8FY9FElQbb6V3o%2Fedit%23gid%3D1778121391
• Doc: https://docs.google.com/document/d/1AEtGEqFiXIL2iHUhpZtBadBvIhF4fR4Oru0XlzhTtAs/edit
• When do we need to engage NCAR and others? Now?
  • Review of current PR should help to settle on the changes, then involve the bigger CCPP community in a few weeks time?
  • DTC deliverable is end of June 2021
  • NCAR needs a stable list of names to give to the developers, by the end of the month?
  • It would be good to complete the "internal" (Cheryl, Steve, Dave, Jimy) review in about two weeks time
• Do we want to maintain the categories in https://github.com/ESCOMP/CCPPStandardNames? The PR above adds everything under "no category" for the time being
• There is an ESPCI effort on a dictionary of standard names for constants; since we also have constants, we need to cross-reference with them at some point later

Other business

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