[Debian-med-packaging] Bug#1103074: pyranges: FTBFS in testing/i386: dh_auto_test: error: pybuild --test --test-pytest -i python{version} -p 3.13 returned exit code 13

[Santiago Vila]

El 2/5/25 a las 20:20, Étienne Mollier escribió:
> Santiago, about the errors you witnessed with pyranges on random
> occurrences, do you have build logs somewhere?  The package has
> a history of heavy ressource usage at test time, and I suspect
> bad parallelism conditions would have caused e.g. out of memory
> conditions.  I've had 0% failure rate on my end after many
> tries, but also lowish cores count combined to stupidly large
> amount of swap along my RAM.  There is also the possibility of
> having run into race conditions, but the rate of failures you
> hit does not match rare conditions (unless you threw several
> dozens of cores at the problem).  The package has been a problem
> with ressource consumption to other contributors in the past, so
> I think I will drop parallelism anyway.

I've now filed a proper bug for the failures I get on amd64.

My guess is that parallelism is not directly related with the test
failures. My feeling is that those tests run some kind
of Monte-Carlo simulation, and the data on which they act
is different each time, because the AWS machines I use for
archive rebuilds are always in a limited set of machine types
(i.e. the test suite does not seem to be deterministic because
otherwise I would never get any failure, or I would always
get a failure).

Thanks.