AMReX-Astro / AMReX-Astro/Castro

SDC/MOL doesn't work with multilevel

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sdc
Dominant language
C++
Stars
340
Forks
105
Avg merge
3d 8h
Merged PRs (30d)
8

Description

we need to come up with a scheme to do the ghost cell fill for the intermediate stages (which is not trivial with RK integration).

we also need to address the source refluxing in Castro.cpp (in particular, we should never call do_new_sources() with MOL.

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start in Castro.cpp and trace the SDC/MOL multilevel integration path and do_new_sources(). Define the intermediate-stage ghost-cell-fill and source-refluxing requirements, then verify that multilevel SDC/MOL runs do not call do_new_sources() in MOL mode.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
backend
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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