2024-4-9 Meeting notes

Approve 2024/1/16 minutes.

@Scot Breitenfeld ​

Approved

cgns.org

@Scot Breitenfeld ​

I meet with Thomas Hauser who is the holder for cgns.org on GoDaddy, he is going to add @Scot Breitenfeld as an alternative owner.

high-level editing tools for the documentation page

@Marc Poinot @Christopher Rumsey ​

@Scot Breitenfeld ​

The Doxygen branch was merged to develop.

Started to explore using Breathe and Sphinx using the develop branch.

UPDATE 4/9: Still in progress.

NVidia

@Scot Breitenfeld

I’ve been meeting with NVidia about their possible use of CGNS in their Universal Scene Description (OpenUSD), https://www.nvidia.com/en-us/omniverse/usd/ , for fluid modeling. They are looking for examples of unstructured time series. Contact @Scot Breitenfeld if you have simulations they can use.

Converting CGNSTalk archive to Github Discussion Posts

@Scot Breitenfeld

No update.

Discussion of the need to extend the standard to include identifiers and references

@Scot Breitenfeld

With more widespread sharing of CGNS data, for example, ML training, it might be helpful to standardize unique identifiers (global) for the file (maybe data, local?). Some examples:

• Online Resources: creator URL, publisher URL, contributors

• UUIDs, date convention, citations

• Descriptive keywords

• Lineage: audit trail for mods to original data

@Scot Breitenfeld Submitted a DOE pre-proposal to gauge interest in funding the work.

mixed element/face zones discussion

@David Garlisch

https://github.com/CGNS/CGNS/discussions/720

Unrelated, the files also cause Paraview to crash.

UPDATE 4/9: No updates

Status update on Accepted CPEX #0045

https://cgnsorg.atlassian.net/browse/CGNS-182

No Discussion

There is currently no one actively working on this. We will keep the project on the meeting agenda, but we don’t expect any updates.

Status update on Accepted CPEX #0047 Proposed Data integration Points

@Mickael PHILIT

Working on the new website before creating a new development branch to prevent duplicating efforts.

Started prototyping with Python and C and will push a branch on GitHub in the upcoming weeks. (The “C” branch is a slow work in progress)

• The first draft of the API is in the branch

  • No unit test of the API yet

  • Sample test representative of applications done and will be improved to remove the “.cgns” binary file.

  • Feedback on API is appreciated

  • Target CGNS 5.0

prioritization, review and attribution of JIRA bugs/issues

@Tony Garratt @David Gutzwiller ​

Next release 4.5.0, Kanban: , Targeting June.

Current status for Ansys:

No urgent issues.

Update: 4/9

• @Scot Breitenfeld Is completing the option of using subfiling for CGNS.

  • Targeting the 4.5.0 release, currently in the subfiling branch.

  • Needs to resolve updating the Doxygen docs into the main CGNS documentation before releasing.

​

Discuss adding a level below zones to avoid slowness issues due to creating many zones.

@Stephen Guzik

@Stephen Guzik will develop a CPEX for further discussion

• Might post the topic on cgnstalk to reach a wider audience.

Update 4/9: no new updates.