MetOffice / MetOffice/lfric_apps
Checkpointing scalars and arrays in a generic way
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- Dominant language
- Fortran
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Description
### Are there any linked Issues or Pull Requests?
_No response_
### Brief description
There are a few requirements to checkpoint scalar values or arrays. In particular, stochastic physics that require the capability early 2026.
Checkpointing of one scalar variable is implemented on trunk in lfric_atm in a bespoke way. This work will create a generic requirement analagous to the system that checkpoints fields.
As a guide, a bespoke solution for one variable was implemented by the following Trac ticket.
https://code.metoffice.gov.uk/trac/lfric_apps/ticket/73
### Further details of the issue.
_No response_
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reviewing the bespoke scalar checkpointing solution in trunk in lfric_atm and the implementation described by Trac ticket 73. Compare it with the existing system for checkpointing fields, then define and validate generic requirements for checkpointing scalar values and arrays for the stated stochastic-physics use cases.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- fortran
- Domain
- hpc
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100