On Fri, Feb 16, 2024 at 7:25 PM 'Martin R' via sage-devel <
sage-devel@googlegroups.com> wrote:
> Oh no, sorry, this was a typo!
>
> YES SCIP WORKS!
>
> Only, for some reason this is now slower than GLPK - I'm lost. I'll look
> through the tickets, I think there was a specific one responsible for big
> speedups.
>
you've installed a binary blob, which is almost surely suboptimal for your
CPU.
Did you try cbc package? It's also a faster than GLPK LP solver.
Or get an academic license for GUROBI.
>
> Thank you so much for your support!
>
> Martin
>
> On Friday 16 February 2024 at 20:18:42 UTC+1 Dima Pasechnik wrote:
>
>> You need an SPD solver - it's a different package, scip_sdp, not
>> pyscipopt.
>> Try
>>
>> make scip_sdp
>>
>> (probably followed up by "make build", just in case)
>>
>> On 16 February 2024 18:39:52 GMT, 'Martin R' via sage-devel <
>> sage-...@googlegroups.com> wrote:
>>
>>> Any hope left? If not, which version of sage do I have to downgrade to?
>>>
>>> Thank you for all the hints so far!
>>>
>>> Martin
>>>
>>> martin@toolbox:~/sage-trac$ ./sage -pip install pyscipopt
>>> Collecting pyscipopt
>>> Downloading
>>> PySCIPOpt-4.4.0-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata
>>> (8.3 kB)
>>> Downloading
>>> PySCIPOpt-4.4.0-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
>>> (12.9 MB)
>>> ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 12.9/12.9 MB 5.3 MB/s eta
>>> 0:00:00
>>> Installing collected packages: pyscipopt
>>> Successfully installed pyscipopt-4.4.0
>>> martin@toolbox:~/sage-trac$ sage
>>> ┌────────────────────────────────────────────────────────────────────┐
>>> │ SageMath version 10.3.beta8, Release Date: 2024-02-13 │
>>> │ Using Python 3.10.12. Type "help()" for help. │
>>> └────────────────────────────────────────────────────────────────────┘
>>> ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
>>> ┃ Warning: this is a prerelease version, and it may be unstable. ┃
>>> ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
>>> sage: default_sdp_solver("SCIP")
>>>
>>>
>>> ---------------------------------------------------------------------------
>>> ValueError Traceback (most recent call
>>> last)
>>>
>>> ...
>>>
>>>
>>> On Friday 16 February 2024 at 18:33:07 UTC+1 Dima Pasechnik wrote:
>>>
>>>> But you can be lucky with the binary wheel you can get from PyPI. I
>>>> didn't test it though, but perhaps it will just work.
>>>>
>>>> On Friday, February 16, 2024 at 4:55:21 PM UTC Matthias Koeppe wrote:
>>>>
>>>>> As noted in
>>>>> https://github.com/sagemath/sage/wiki/Sage-10.2-Release-Tour#known-problems-and-workarounds,
>>>>> our pyscipopt package has not been updated to work with Cython 3 yet.
>>>>> (Still the same in upstream PySCIPOpt master, as noted
>>>>> https://github.com/scipopt/PySCIPOpt/pull/630#issuecomment-1938080592)
>>>>>
>>>>> On Friday, February 16, 2024 at 7:48:09 AM UTC-8 Martin R wrote:
>>>>>
>>>>>> I (urgently) need the scip MILP solver (on 10.3.beta8, Ubuntu 22.04).
>>>>>>
>>>>>> sage -i pyscipopt
>>>>>>
>>>>>> ends with
>>>>>>
>>>>>> ***************************************************************
>>>>>> Error building Sage.
>>>>>>
>>>>>> The following package(s) may have failed to build (not necessarily
>>>>>> during this run of 'make pyscipopt'):
>>>>>>
>>>>>> * package: numpy-1.26.2
>>>>>> last build time: Feb 4 18:46
>>>>>> log file: /home/martin/sage-trac/logs/pkgs/numpy-1.26.2.log
>>>>>>
>>>>>> * package: pyscipopt-4.3.0
>>>>>> last build time: Feb 16 16:44
>>>>>> log file:
>>>>>> /home/martin/sage-trac/logs/pkgs/pyscipopt-4.3.0.log
>>>>>>
>>>>>> It is safe to delete any log files and build directories, but they
>>>>>> contain information that is helpful for debugging build problems.
>>>>>> WARNING: If you now run 'make' again, the build directory of the
>>>>>> same version of the package will, by default, be deleted. Set the
>>>>>> environment variable SAGE_KEEP_BUILT_SPKGS=yes to prevent this.
>>>>>>
>>>>>> make: *** [Makefile:40: pyscipopt] Error 1
>>>>>>
>>>>>> The log is attached.
>>>>>>
>>>>>> Please excuse me posting to the wrong list, etc.
>>>>>>
>>>>>> Martin
>>>>>>
>>>>> --
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