test_groups: route FMI + Initialization to GitHub-hosted runners (fix OOM kills on pre)#4646
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AayushSabharwal merged 1 commit intoJun 22, 2026
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… OOM kills) The FMI and Initialization groups are memory-heavy and were getting OOM-killed on the 4vcpu/8GB self-hosted runners that now back the `ubuntu-latest` label, especially on `pre` (e.g. run 27742584454, jobs 82073267896 / 82073267635). Designate `runner = "ubuntu-24.04"` for those groups (root + the ModelingToolkitBase sublibrary's Initialization). GitHub-hosted ubuntu runners have ~16GB (2x the 8GB self-hosted), and `ubuntu-24.04` deterministically forces a GitHub-hosted runner because the self-hosted pool only carries the `ubuntu-latest` label. Verified with compute_affected_sublibraries.jl --root-matrix: FMI/Initialization now emit runner=ubuntu-24.04, all other groups stay ubuntu-latest. Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com> Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Fixes the OOM kills @AayushSabharwal hit on the FMI and Initialization groups (esp.
pre) — e.g. run 27742584454 jobs 82073267896 / 82073267635, both onself-hosted-4vcpu-8gb-…runners.Per @ChrisRackauckas's
test_groupsrunner-designation suggestion: setrunner = "ubuntu-24.04"on FMI + Initialization (root) and the ModelingToolkitBase Initialization sublib group. GitHub-hosted ubuntu runners have ~16GB (2x the 8GB self-hosted), andubuntu-24.04forces GitHub-hosted (the self-hosted pool only carriesubuntu-latest).Note:
runneris per-group, not per-version, so this applies to lts/1/pre for those groups (not pre-only) — harmless, just gives the lighter versions more headroom too. Verified locally viacompute_affected_sublibraries.jl --root-matrix: FMI/Initialization emitrunner=ubuntu-24.04, all other groups unchanged. The PR's own CI on those groups is the end-to-end confirmation. If 16GB still isn't enough onpre, the next step is a dedicated large runner (org config).