[Debian-science-sagemath] 62 failed tests and classification of remaining failures

[Ximin Luo]

They are different, they were just spuriously linked to gmp due to a bug in the upstream build scripts. Also we're using 094h and not 094g as Sage are.

I fixed the spurious linking [1], but the issue still remains. I even tried building it using GMP float instead of C double [2] but the error didn't go away.

However, I see that you guys have also experienced the same issue in the past (commit 269c1e1551285566b8ba7a2b890989e5590e9f11) so I suppose it's safe to ignore it for now.

X

[1] https://anonscm.debian.org/git/debian-science/packages/cddlib.git/commit/?id=c56ad14d10953784b64ee7cee56b9fa74cf1f316
[2] https://anonscm.debian.org/git/debian-science/packages/cddlib.git/commit/?h=_experiment_gmpfloat&id=f76de112e7746877bed38b9234bfabb498e80a40

François Bissey:
> In Gentoo (and the test is fine for me):
> ldd -r /usr/bin/cdd_both_reps
> 	linux-vdso.so.1 (0x00007ffe1e1db000)
> 	libcdd.so.0 => /usr/lib64/libcdd.so.0 (0x00007fe9cb88f000)
> 	libc.so.6 => /lib64/libc.so.6 (0x00007fe9cb4f3000)
> 	/lib64/ld-linux-x86-64.so.2 (0x00007fe9cbab0000)
> Is your libcdd really different from your libcddgmp?
> ldd -r /usr/lib64/libcdd.so
> 	linux-vdso.so.1 (0x00007ffec3a65000)
> 	libc.so.6 => /lib64/libc.so.6 (0x00007f2045031000)
> 	/lib64/ld-linux-x86-64.so.2 (0x0000561003df2000)
> 
> François
> 
>> On 10/10/2016, at 23:22, Ximin Luo <infinity0 at debian.org> wrote:
>>
>> Everything seems to be fine, link wise [1]. It is the RDF test that fails:
>>
>> sage: Polyhedron(point_list)
>> A 3-dimensional polyhedron in RDF^3 defined as the convex hull of 14 vertices
>>
>> and the QQ test passes. However sage 7.3 defines:
>>
>> class Polyhedron_RDF_cdd(Polyhedron_cdd, Polyhedron_RDF):
>>    _cdd_executable = 'cdd_both_reps'
>>
>> Would it be appropriate to change this to cdd_both_reps_gmp? Not sure why the test passes in vanilla sage though (or does it)...
>>
>> X
>>
>> [1]
>> $ ldd -r /usr/bin/cdd_both_reps_gmp 
>> 	linux-vdso.so.1 (0x00007ffc896ba000)
>> 	libcddgmp.so.0 => /usr/lib/x86_64-linux-gnu/libcddgmp.so.0 (0x00007fd52f55a000)
>> 	libgmp.so.10 => /usr/lib/x86_64-linux-gnu/libgmp.so.10 (0x00007fd52f2d7000)
>> 	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fd52ef35000)
>> 	/lib64/ld-linux-x86-64.so.2 (0x000055df3fd9e000)
>> $ ldd -r /usr/bin/cdd_both_reps
>> 	linux-vdso.so.1 (0x00007ffeaeb7a000)
>> 	libcdd.so.0 => /usr/lib/x86_64-linux-gnu/libcdd.so.0 (0x00007f15d83fd000)
>> 	libgmp.so.10 => /usr/lib/x86_64-linux-gnu/libgmp.so.10 (0x00007f15d817a000)
>> 	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f15d7dd8000)
>> 	/lib64/ld-linux-x86-64.so.2 (0x000055c949fc7000)
>>
>> François Bissey:
>>> Hum, would need to check that the _gmp executable of cddlib are actually
>>> linked to libcddgmp.so and ultimately to libgmp.so.
>>>
>>> François
>>>
>>>> On 8/10/2016, at 23:08, Ximin Luo <infinity0 at debian.org> wrote:
>>>>
>>>> # One case of "Error: Numerical inconsistency is found.  Use the GMP exact arithmetic."
>>>> sage -t --long src/sage/geometry/polyhedron/backend_cdd.py  # 7 doctests failed
>>>
>>>
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>>
>>
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