ci: add shell: bash to steps using PIPESTATUS#12
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PIPESTATUS is bash-specific; ubuntu:24.04 containers default to sh, causing "Bad substitution" on the mid-gpu-tests job. Add shell: bash to all affected steps across ci-gpu.yml and long-running-tests.yml.
bmhowe23
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Mar 9, 2026
ivanbasov
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Apr 10, 2026
PIPESTATUS is bash-specific; ubuntu:24.04 containers default to sh, causing "Bad substitution" on the mid-gpu-tests job. Add shell: bash to all affected steps across ci-gpu.yml and long-running-tests.yml.
ivanbasov
added a commit
that referenced
this pull request
Apr 10, 2026
PIPESTATUS is bash-specific; ubuntu:24.04 containers default to sh, causing "Bad substitution" on the mid-gpu-tests job. Add shell: bash to all affected steps across ci-gpu.yml and long-running-tests.yml.
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Problem
The
mid-gpu-testsjob was failing with:Root cause:
PIPESTATUSis a bash-specific array. GitHub Actionsrun:steps inubuntu:24.04containers default tosh, which does not supportPIPESTATUS, causing "Bad substitution".The
gpu-testsjob already hadshell: bashon the affected step —mid-gpu-testsand both steps inlong-running-tests.ymlwere missing it.Fix
Add
shell: bashto all three affected steps:ci-gpu.yml— Mid-tier training + inference with LER checklong-running-tests.yml— Multi-orientation inference (O1–O4) with LER output checklong-running-tests.yml— Full 1-epoch training + inference with LER validationRef: https://github.com/NVIDIA/quantum-predecoder/actions/runs/22790464172/job/66116526960