CI: Adjust GitHub Actions parallel job counts #12927
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Adjusts the `make -j` flag to match the latest GitHub-hosted runner hardware specs[^1]: - `ubuntu-latest` on 4 CPU cores - `macos-latest` on 3 CPU cores The processor count is ideally obtained from `nproc`, but setting env vars from the current CI yaml files is not possible because they expect literal strings. [^1]: https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners/about-github-hosted-runners#standard-github-hosted-runners-for-public-repositories
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Why not using |
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The root level We could setup the env var before calling |
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See PR #11510. This hasn't been enabled already because of reliability issues
on the CI systems. But, there have been a few issues fixed since I tried last,
so it will be interesting to see CI results of this PR.
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Thank you @dfandrich - I saw your commit that added parallel CI jobs and the discussions around it. GitHub recently doubled the specs of their hosted runners, so this one tries to take advantage of it. I could run this locally with |
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Adjusts the
make -jflag to match the latest GitHub-hosted runner hardware specs1:ubuntu-lateston 4 CPU coresmacos-lateston 3 CPU coresThe processor count is ideally obtained from
nproc, but setting env vars from the current CI yaml files is not possible because they expect literal strings.Footnotes
https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners/about-github-hosted-runners#standard-github-hosted-runners-for-public-repositories ↩