#10879: add optional SCIP integer constraint solver
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Reporter: malb | Owner: tbd
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-5.8
Component: packages | Resolution:
Keywords: mip, mixed integer programming | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Martin Albrecht | Merged in:
Dependencies: | Stopgaps:
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Description changed by malb:
Old description:
> "SCIP is currently one of the fastest non-commercial mixed integer
> programming (MIP) solvers. It is also a framework for Constraint Integer
> Programming and branch-cut-and-price. It allows total control of the
> solution process and the access of detailed information down to the guts
> of the solver." -- http://scip.zib.de/
>
> Features interesting to Sage:
>
> * SCIP is pretty fast for Mixed Integer Programming
> * SCIP is a Constraint Integer Programming solver and allows non-linear
> constraints
> * SCIP's source code is available
>
> However, we don't have the right to redistribute the SCIP source code.
> Thus, the attached SPKG is empty except for the spkg-install script etc.
>
> To build a SCIP for Sage do:
> * download the ZIB Optmisation Suite from
> http://zibopt.zib.de/download.php?fname=ziboptsuite-2.0.1.tgz
> * place the files `scip-2.0.1.tgz` and `soplex-1.5.0.tgz` in the `src/`
> subdirectory of the attached SPKG
> * install the SPKG
> * apply the attached patch and `sage -b`
>
> '''KNOWN ISSUES'''
> * Sage crashes when SCIP variables are printed with SIGSEGV on OSX. It
> works fine under Linux.
> * the following doctests fail
> {{{
> sage -t -long -force_lib
> devel/sage/doc/en/thematic_tutorials/linear_programming.rst # 1 doctests
> failed
> sage -t -long -force_lib devel/sage/sage/graphs/digraph.py # 1 doctests
> failed
> sage -t -long -force_lib devel/sage/sage/numerical/mip.pyx # 3 doctests
> failed
> }}}
> * printing of quadratic constraints does not work yet.
New description:
"SCIP is currently one of the fastest non-commercial mixed integer
programming (MIP) solvers. It is also a framework for Constraint Integer
Programming and branch-cut-and-price. It allows total control of the
solution process and the access of detailed information down to the guts
of the solver." -- http://scip.zib.de/
Features interesting to Sage:
* SCIP is pretty fast for Mixed Integer Programming
* SCIP is a Constraint Integer Programming solver and allows non-linear
constraints
* SCIP's source code is available
However, we don't have the right to redistribute the SCIP source code.
Thus, the attached SPKG is empty except for the spkg-install script etc.
To build a SCIP for Sage do:
* download the SCIP Optmisation Suite from
http://scip.zib.de/download.php?fname=scipoptsuite-3.0.1.tgz
* place the files `scip-3.0.1.tgz` and `soplex-1.7.1.tgz` in the `src/`
subdirectory of the attached SPKG
* install the SPKG
* apply the attached patch and `sage -b`
'''KNOWN ISSUES'''
* Sage crashes when SCIP variables are printed with SIGSEGV on OSX. It
works fine under Linux.
* printing of quadratic constraints does not work yet.
--
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10879#comment:10>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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