I agree that the openblas upgrade is to blame here. This error also
reproduces with openblas 0.3.22 built from source -
see https://github.com/sagemath/sage/pull/35371
On Tuesday, March 28, 2023 at 11:35:03 AM UTC-7 John H Palmieri wrote:
> I ran "brew upgrade" recently on two different Macs, one Intel and one
> Apple Silicon, and now the Sage documentation fails to build:
>
> [hyperboli] from
> /Users/jpalmier/Desktop/Sage/sage_builds/TESTING/clean/sage-10.0.beta5/src/doc/en/reference/hyperbolic_geometry/sage/geometry/hyperbolic_space/hyperbolic_geodesic.rst:
> [hyperboli] Traceback (most recent call last):
> [hyperboli] File "sage/matrix/matrix_double_dense.pyx", line 345, in
> sage.matrix.matrix_double_dense.Matrix_double_dense.__invert__
> [hyperboli] M._matrix_numpy = scipy.linalg.inv(self._matrix_numpy)
> [hyperboli] File
> "/Users/jpalmier/Desktop/Sage/sage_builds/TESTING/clean/sage-10.0.beta5/local/var/lib/sage/venv-python3.11/lib/python3.11/site-packages/scipy/linalg/_basic.py",
>
> line 975, in inv
> [hyperboli] raise LinAlgError("singular matrix")
> [hyperboli] numpy.linalg.LinAlgError: singular matrix
> [hyperboli] During handling of the above exception, another exception
> occurred:
> [hyperboli] Traceback (most recent call last):
> [hyperboli] File
> "/Users/jpalmier/Desktop/Sage/sage_builds/TESTING/clean/sage-10.0.beta5/local/var/lib/sage/venv-python3.11/lib/python3.11/site-packages/matplotlib/sphinxext/plot_directive.py",
>
> line 517, in _run_code
> [hyperboli] exec(code, ns)
> [hyperboli] File "<string>", line 3, in <module>
> [hyperboli] File
> "/Users/jpalmier/Desktop/Sage/sage_builds/TESTING/clean/sage-10.0.beta5/src/sage/geometry/hyperbolic_space/hyperbolic_geodesic.py",
>
> line 1625, in perpendicular_bisector
> [hyperboli] isom_mtrx = S.inverse() * (T1 * T2) * S
> [hyperboli] ^^^^^^^^^^^
> [hyperboli] File "sage/matrix/matrix2.pyx", line 9964, in
> sage.matrix.matrix2.Matrix.inverse
> [hyperboli] return ~self
> [hyperboli] File "sage/matrix/matrix_double_dense.pyx", line 347, in
> sage.matrix.matrix_double_dense.Matrix_double_dense.__invert__
> [hyperboli] raise ZeroDivisionError("input matrix must be nonsingular")
> [hyperboli] ZeroDivisionError: input matrix must be nonsingular
>
> (I saw this first with 10.0.beta6 but then went and tried with 10.0.beta5,
> which had succeeded earlier. Now it fails.)
>
> Perhaps this is due to an upgraded openblas? That's the most obvious among
> the recently upgraded packages, at least to me: homebrew just upgraded
> these:
>
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 10:21 gnupg
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 10:21 pinentry
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 10:21 npth
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 10:21 libusb
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 10:21 libksba
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 10:21 libgcrypt
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 10:21 libassuan
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 10:21 libgpg-error
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 10:00 gh
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 10:00 imagemagick
> drwxr-xr-x 3 jpalmier staff 96 Mar 27 09:59 tox
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 09:59 primecount
> drwxr-xr-x 3 jpalmier staff 96 Mar 27 09:59 tcl-tk
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 09:59 qt
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 09:59 gobject-introspection
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 09:59 netpbm
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 09:59 glib
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 09:59 mpg123
> drwxr-xr-x 3 jpalmier admin 96 Mar 27 09:59 cmake
> drwxr-xr-x 3 jpalmier staff 96 Mar 27 09:59 ghostscript
> drwxr-xr-x 3 jpalmier staff 96 Mar 27 09:59 sqlite
> drwxr-xr-x 3 jpalmier staff 96 Mar 27 09:59 openblas
>
> "brew info openblas" says that it's version 0.3.22, whereas Sage comes
> with 0.3.21. Everything works after building with `./configure
> --with-system-openblas=no`, but that flag triggers some other packages to
> be built by Sage rather than come from the system, so I'm not 100% sure
> it's the issue.
>
> Has anyone else seen this?
>
> --
> John
>
>
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