PersistentOverlapConnectors::findConnector is resorting to a global search to find overlaps
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- C++
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Description
I regularly see this message as the last of my logs before simulations appear to be crashed or stalled :
```
samrai/source/SAMRAI/hier/PersistentOverlapConnectors.cpp line :473 message: PersistentOverlapConnectors::findConnector is resorting
to a global search to find overlaps between 0x4f6a600 and 0x4f6a600.
This relies on unscalable data or triggers unscalable operations.
Number of implicit global searches: 850
```
I only have this message for simulations running with the TileClustering, never with BergerRigoutsos.
any hint regarding what may be the source of this?
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Research direction
Start at samrai/source/SAMRAI/hier/PersistentOverlapConnectors.cpp around line 473 and trace why findConnector falls back to a global search. Compare the behavior for TileClustering and BergerRigoutsos, using the reported log and implicit global-search count as evidence. Done means identifying the source of the repeated fallback and documenting or addressing the unscalable operation.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- hpc, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100