Source: scipy
Version: 1.8.1-14
Severity: serious
Control: affects -1 atlas

Dear Maintainer,

Since the upload of atlas 3.10.3-13 to unstable, the autopkgtest of scipy fails
on armel. See:
https://ci.debian.net/data/autopkgtest/testing/armel/s/scipy/29064436/log.gz

More precisely, a test in sparse/linalg/_eigen/tests/test_svds.py fails because
the error is now slightly above tolerance. Simply increasing the tolerance
should fix the problem.

Note that the only numerically significant change in 3.10.3-13 was the rebuild
against lapack 3.11, hence the latter is probably the real cause of the problem
(though it may also be a change in the toolchain). In particular, note that
this issue transitively prevents lapack 3.11 from migrating to
testing/bookworm.

Incidentally, you should be aware that atlas has not seen a stable major
upstream since 2016; it has also been superseded by better alternatives like
OpenBLAS and BLIS; I’m therefore considering its possible removal during the
trixie development cycle.

Thanks for your work,

--
⢀⣴⠾⠻⢶⣦⠀  Sébastien Villemot
⣾⠁⢠⠒⠀⣿⡁  Debian Developer
⢿⡄⠘⠷⠚⠋⠀  https://sebastien.villemot.name
⠈⠳⣄⠀⠀⠀⠀  https://www.debian.org

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