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[BUG]: test_assemble_domains segfaults on 6 processes #3117

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jpdean opened this issue Apr 1, 2024 · 2 comments · Fixed by #3118
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[BUG]: test_assemble_domains segfaults on 6 processes #3117

jpdean opened this issue Apr 1, 2024 · 2 comments · Fixed by #3118
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@jpdean
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jpdean commented Apr 1, 2024

Summarize the issue

test_assemble_domains fails with segfault on 6 processes

How to reproduce the bug

mpirun -n 6 python3 -m pytest test_assemble_domains.py

Minimal Example (Python)

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Output (Python)

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Version

main branch

DOLFINx git commit

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Installation

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@jpdean jpdean added the bug Something isn't working label Apr 1, 2024
@jorgensd
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jorgensd commented Apr 2, 2024

Traceback is:

test_assemble_domains.py::test_assembly_dx_domains[meshtags-none] python3: /usr/local/dolfinx-real64/include/dolfinx/fem/DirichletBC.h:593: void dolfinx::fem::DirichletBC<T, U>::mark_dofs(std::span<signed char>) const [with T = double; U = double]: Assertion `_dofs0[i] < (std::int32_t)markers.size()' failed.
Fatal Python error: Aborted

@jorgensd
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jorgensd commented Apr 2, 2024

This makes sense, as the test uses:

    bc = dirichletbc(Function(V), np.arange(30))

which I guess is out of range on 6 processes.
How about using
np.arange(V.dofmap.index_map.size_local // 2, dtype=np.int32)?

jorgensd added a commit that referenced this issue Apr 2, 2024
@jorgensd
Generalize bounds of bc for arbitrary partitioning. Resolves #3117
1ebd8ca
@jorgensd jorgensd mentioned this issue Apr 2, 2024
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github-merge-queue bot pushed a commit that referenced this issue Apr 2, 2024
@jorgensd
Generalize bounds of bc for arbitrary partitioning in `test_assembly_…
f55ca1a 
…domains.py` (#3118)

* Generalize bounds of bc for arbitrary partitioning. Resolves #3117

* Ruff formatting
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Generalize bounds of bc for arbitrary partitioning in test_assembly_domains.py FEniCS/dolfinx
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@jorgensd @jpdean