Crash in parallel gb computations
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- Dominant language
- Macaulay2
- Stars
- 435
- Forks
- 297
- Avg merge
- 4d 20h
- Merged PRs (30d)
- 11
Description
Another consistent crash that I can't extract in a simple example:
```m2
3# GBRing::gbvector_cancel_lead_terms(FreeModule const*, FreeModule const*, gbvector const*, gbvector const*,
gbvector const*, gbvector const*, gbvector*&, gbvector*&) at /home/mahrud/M2/M2/Macaulay2/e/gbring.cpp:1074
4# gbA::compute_s_pair(gbA::spair*) at /home/mahrud/M2/M2/Macaulay2/e/gb-default.cpp:1331
5# gbA::reduce_kk(gbA::spair*) at /home/mahrud/M2/M2/Macaulay2/e/gb-default.cpp:1364
6# gbA::reduceit(gbA::spair*) at /home/mahrud/M2/M2/Macaulay2/e/gb-default.cpp:1585
7# gbA::do_computation() at /home/mahrud/M2/M2/Macaulay2/e/gb-default.cpp:2528
8# gbA::start_computation() at /home/mahrud/M2/M2/Macaulay2/e/gb-default.cpp:2601
9# Computation::status() const at /home/mahrud/M2/M2/Macaulay2/e/comp.hpp:49
10# rawStartComputation at /home/mahrud/M2/M2/Macaulay2/e/interface/groebner.cpp:272
```
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First steps
- Read the whole issue, then the project's contributing guide.
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Research direction
Start at e/gbring.cpp:1074, then follow the reported call chain through e/gb-default.cpp and e/interface/groebner.cpp. Reproduce the crash in a parallel Gröbner-basis computation and identify a triggering case; done means the computation no longer crashes for that case and the relevant regression is covered.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Active
- Clarity
- Needs clarification
- Newbie friendliness
- 38/100