Indeed, #35103 gives a speedup of 50% in the case I'm considering! Martin
On Friday 16 February 2024 at 20:41:55 UTC+1 Martin R wrote: > I'm currently checking out https://github.com/sagemath/sage/pull/35103 > and browsing through old issues (there should be one speeding up > add_constraint, because indeed for the current problem most of the time > (according to %prun) is spent in add_constraint, and I reported and fixed > some of these a long time ago, but apparently, they never made it into > sage. what a waste). > > I'll look into the other options after that! Thank you so much! > > Martin > > On Friday 16 February 2024 at 20:31:15 UTC+1 Dima Pasechnik wrote: > > On Fri, Feb 16, 2024 at 7:25 PM 'Martin R' via sage-devel < > sage-...@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 > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-devel+...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-devel/6907b47b-96b2-45fb-8bd6-f437b023e935n%40googlegroups.com > > <https://groups.google.com/d/msgid/sage-devel/6907b47b-96b2-45fb-8bd6-f437b023e935n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. 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