CCPP Framework Meeting Minutes 2025 10 09

Agenda

• GitHub issues/PRs
• New items
• Updates
• Other business
• notes

---

Attendees: Michael Kavulich, Dom Heinzeller, Cheryl Craig, Courtney Peverley

GitHub issues, PRs, discussions

• Check Fortran imports to locate unknown DDT #684

  • Alternative to DRAFT: Skip variable parse checks during fortran parsing #673
  • Has one approval (NCAR), needs review from NRL/NOAA

• Add support for MPI_Comm (mpi08) object in capgen Issue#686

  • Related to #684?

• Improve parsing of Fortran array specifications #687

  • Needs reviews
  • Dependent on #684?

• Capgen performance when using many suites Issue#688

• Add capability to parse nested suites in capgen #691

Drafts/On Hold

• New test to demonstrate GNU failure #689
  • Associated issue: Unallocated fields passed into Group Caps #690
  • PR Demonstrates test failure, but doesn't fix it yet

Capgen project board

• No new issues

New items for discussion

• Impacts of prolonged govt shutdown?

Updates from last time

Previous notes

Other business

Meeting notes

• Check fortran imports to locate unknown DDT (#684)
  • Discussion about bare use statements
  • Dom thinks it’s best to require listing out what’s used (no bare use statements)
    • Will need to document this somewhere (we require explicit use statements for external DDTs that the framework has to parse but has no metadata for; otherwise, we just recommend no bare use statements
  • Dom to approve
• Capgen doesn’t support MPI (#686)
• Improve parsing of Fortran array specifications (#687)
  • Fix for old parsing issue
  • Doesn’t pass the CI tests
    • Michael to ping Steve on what the status is
• Add capability to parse nested suites in capgen (#691)
  • Dom found that chatgpt was pretty decent at writing doctests
  • Cheryl to review from SIMA side
• New test to demonstrate GNU failure (#689) - draft
  • Related to issue #690 (unallocated fields passed into group caps)
  • On hold until Dustin comes back
  • Also related to #688 - performance with many suites
    • Will be resolved by passing in DDTs instead of individual fields (Dustin working on this)
    • Dom’s idea - Another way to improve performance - separate metadata checking from cap generation

• We'll meet in two weeks - either in person if Dustin's back, or at normal time online otherwise