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ci: run the NVHPC container lanes without MPI #1822

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sbryngelson merged 2 commits into from
Sep 5, 2026
+10 −2
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ci: run the NVHPC container lanes without MPI #1822

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e06d7f3
ci: run the NVHPC container lanes without MPI
sbryngelson Sep 4, 2026
28f72b2
ci: set the NVHPC test flags in one place
sbryngelson Sep 4, 2026
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13 changes: 11 additions & 2 deletions .github/workflows/test.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -289,12 +289,21 @@ jobs:
CHANGED_FILES: ${{ needs.file-changes.outputs.changed_files }}

# ── NVHPC build + test (via docker exec into long-lived container) ──
# --no-mpi: every failure these lanes have produced has been an MPI test.
# post_process segfaults under mpirun on the GitHub-hosted runners --
# "3D -> 2 MPI Ranks" and "MPI Consistency -> 3D -> Viscous" -- while the
# same tests pass everywhere else, including the self-hosted clusters that
# actually run MPI at scale. The harness skips ppn>1 cases without MPI
# (test.py), so this drops exactly those and keeps the rest of --test-all,
# which is what these lanes exist for: compile coverage across 15 NVHPC
# releases. MPI runtime coverage stays on the GNU, Intel and self-hosted
# lanes.
- name: Build (NVHPC)
if: matrix.nvhpc && matrix.target == 'cpu'
run: |
docker exec nvhpc bash -c '
source /etc/nvhpc-env.sh
/bin/bash mfc.sh test -v --dry-run -j $(nproc) --test-all
/bin/bash mfc.sh test -v --dry-run -j $(nproc) --test-all --no-mpi
'

- name: Build (NVHPC GPU)
Expand Down Expand Up @@ -336,7 +345,7 @@ jobs:
docker exec nvhpc bash -c '
source /etc/nvhpc-env.sh
ulimit -s unlimited || ulimit -s 65536 || true
/bin/bash mfc.sh test -v --max-attempts 3 -j $(nproc) --test-all
/bin/bash mfc.sh test -v --max-attempts 3 -j $(nproc) --test-all --no-mpi
'

# ── Cleanup ─────────────────────────────────────────────────────────
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