CI: 4 Cores Linux/Win, 3 Cores macOS

[ax3l]

Increase build and test parallelism according to new increased core limits on public GH hosted runners.

[WeiqunZhang]

Could also update cuda.yml and clang-tidy.yml. And there are a few places in intel, hip and ubuntu that are still using 2 processes.

[WeiqunZhang]

and one more in windows.

[ax3l]

I can't find cuda.yml and clang-tidy.yml. Wrong repo?

[ax3l]

Found a few more! :)
(pip install -v . parallelism can be hinted via an env var)

[WeiqunZhang]

I can't find cuda.yml and clang-tidy.yml. Wrong repo?

Oh right, I thought this was WarpX repo.