Your message dated Wed, 25 Mar 2026 12:04:41 +0000
with message-id <[email protected]>
and subject line Bug#1126688: fixed in openblas 0.3.32+ds-1
has caused the Debian Bug report #1126688,
regarding openblas causes slepc4py test failure on ppc64el: Error in LAPACK
subroutine gesvd: info=127
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
1126688: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1126688
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Source: openblas
Version: 0.3.30+ds-3
Severity: normal
X-Debbugs-Cc: [email protected], Trupti <[email protected]>
User: [email protected]
Usertags: ppc64el
Control: affects -1 src:slepc4py
slepc4py 3.24.2-1 has been failing ppc64el tests in testing, while
bizarrely passing in unstable.
unstable passes:
https://ci.debian.net/packages/s/slepc4py/unstable/ppc64el/68218387/
testing fails:
https://ci.debian.net/packages/s/slepc4py/testing/ppc64el/68217024/
The error comes from LAPACK:
225s python3.13 ex10.py
...
225s Solve the problem with POD
225s The L2-norm of the error is: 4.323608292134194
225s NORMAL END
225s python3.13 ex11.py
226s 2-D Laplacian Eigenproblem solved with contour integral, N=1024 (32x32
grid)
226s
226s petsc4py.PETSc.Error: error code 76
226s [0] EPSSolve() at
/build/reproducible-path/slepc-3.24.2+dfsg1/src/eps/interface/epssolve.c:162
226s [0] EPSSolve_CISS() at
/build/reproducible-path/slepc-3.24.2+dfsg1/src/eps/impls/ciss/ciss.c:493
226s [0] BVSVDAndRank() at
/build/reproducible-path/slepc-3.24.2+dfsg1/src/sys/classes/bv/interface/bvcontour.c:556
226s [0] BVSVDAndRank_Refine() at
/build/reproducible-path/slepc-3.24.2+dfsg1/src/sys/classes/bv/interface/bvcontour.c:349
226s [0] Error in external library
226s [0] Error in LAPACK subroutine gesvd: info=127
226s
226s The above exception was the direct cause of the following exception:
226s
226s Traceback (most recent call last):
226s File
"/tmp/autopkgtest-lxc.igtag2q7/downtmp/build.LE7/src/test-demos-py3.13/ex11.py",
line 83, in <module>
226s main()
226s ~~~~^^
226s File
"/tmp/autopkgtest-lxc.igtag2q7/downtmp/build.LE7/src/test-demos-py3.13/ex11.py",
line 75, in main
226s E.solve()
226s ~~~~~~~^^
226s SystemError: <cyfunction EPS.solve at 0x3ffe9018cdc0> returned a result
with an exception set
226s make: Leaving directory
'/tmp/autopkgtest-lxc.igtag2q7/downtmp/build.LE7/src/test-demos-py3.13'
226s make: *** [makefile:13: run_ex11] Error 1
Comparing the two logs, the difference that stands out is that
unstable uses generic liblapack3 3.12.1-7+b1, and passes,
while testing uses openblas libopenblas0-pthread 0.3.30+ds-3+b1, and
fails.
My tentative conclusion is that liblapack.so from libopenblas0-pthread
is generating the reported error 127 in gesvd
It's not clear to me why testing uses openblas while unstable uses
generic lapack, but it's formally permitted by alternative
libpetsc3.24-dev-common
Depends: liblapack-dev | libopenblas-dev | libatlas-base-dev | liblapack.so
which provides the lapack dependency for slepc.
There was a previous recent ppc64el-specific bug in openblas, Bug#1121177 (also
#1114016).
Trupti was helpful in triaging that bug, so I'm cc:ing you here.
There have been some recent ppc64 patches in openblas upstream,
perhaps they address the issue
https://github.com/OpenMathLib/OpenBLAS/pull/5628
see also https://github.com/OpenMathLib/OpenBLAS/issues/5627
But not clear if that's the same issue though.
--- End Message ---
--- Begin Message ---
Source: openblas
Source-Version: 0.3.32+ds-1
Done: Sébastien Villemot <[email protected]>
We believe that the bug you reported is fixed in the latest version of
openblas, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Sébastien Villemot <[email protected]> (supplier of updated openblas package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Wed, 25 Mar 2026 11:53:53 +0100
Source: openblas
Architecture: source
Version: 0.3.32+ds-1
Distribution: experimental
Urgency: medium
Maintainer: Debian Science Maintainers
<[email protected]>
Changed-By: Sébastien Villemot <[email protected]>
Closes: 1126688
Changes:
openblas (0.3.32+ds-1) experimental; urgency=medium
.
* New upstream version 0.3.32+ds
– fixes miscompilation on ppc64el (Closes: #1126688)
* d/copyright: reflect upstream changes
* Drop patches applied upstream
– ftbfs-serial-arm64.patch
– ftbfs-serial.patch
– loong64-dpotrf.patch
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