Hello Pythonistats, packagers,
A handful of Fedora Python packages uses pytest-xdist to run tests in parallel
like this:
%pytest -n auto
-n auto means pytest will spawn a number of workers processes equal to the
number of available CPUs.
In the spirit of other packaging guidelines, I believe we should use this instead:
%pytest -n %{_smp_build_ncpus}
This means the same thing in most of the ceases, but will limit the number of
workers depending on other constraints in the spec or in the environment.
Should I do this in a mass change? Not so many packages use pytest -n auto in
the spec:
$ rg -l -- '(-n|--numprocesses)(\s*|=)auto(\s|$)'
ansible-bender.spec
azure-cli.spec
ocrmypdf.spec
python-cartopy.spec
python-GridDataFormats.spec
python-hypothesis.spec
python-matplotlib.spec
python-mplcairo.spec
python-rpmautospec.spec
python-sqlalchemy.spec
python-tox.spec
python-xarray.spec
python-zstandard.spec
pythran.spec
scipy.spec
(Other packages have that in tox.ini or pytest config file, but I am not aiming
at changing that here.)
And, considering many other packages might want to benefit from that, should
this be:
1) encouraged in the Python packaging guidelines
2) macronized (I was thinking %pytest_parallel, but TBD)
?
--
Miro Hrončok
--
Phone: +420777974800
IRC: mhroncok
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