https://github.com/scipopt/scip.jl

Julia interface to SCIP solver

Science Score: 36.0%

This score indicates how likely this project is to be science-related based on various indicators:

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CITATION.cff file
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codemeta.json file
Found codemeta.json file
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.zenodo.json file
Found .zenodo.json file
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DOI references
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Academic publication links
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Committers with academic emails
3 of 23 committers (13.0%) from academic institutions
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Institutional organization owner
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JOSS paper metadata
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Scientific vocabulary similarity
Low similarity (15.5%) to scientific vocabulary

Keywords

global-optimization hacktoberfest julia mixed-integer-linear-programming mixed-integer-optimization mixed-integer-programming nonlinear-optimization

Keywords from Contributors

mathematical-programming semidefinite-programming nonlinear-programming numerical julialang mathematical-modelling polytope conic-programs programming-language high-performance

Last synced: 6 months ago · JSON representation

Repository

Julia interface to SCIP solver

Basic Info

Host: GitHub
Owner: scipopt
License: mit
Language: Julia
Default Branch: master
Homepage:
Size: 1.24 MB

Statistics

Stars: 111
Watchers: 10
Forks: 24
Open Issues: 8
Releases: 47

Topics

global-optimization hacktoberfest julia mixed-integer-linear-programming mixed-integer-optimization mixed-integer-programming nonlinear-optimization

Created over 9 years ago · Last pushed 8 months ago

Metadata Files

Readme Changelog License

SCIP.jl

SCIP.jl is a Julia interface to the SCIP solver.

It has two components:

a thin wrapper around the complete C API
an interface to MathOptInterface

Affiliation

This wrapper is maintained by the SCIP project with the help of the JuMP community.

Getting help

If you need help, please ask a question on the JuMP community forum.

If you have a reproducible example of a bug, please open a GitHub issue.

License

SCIP.jl is licensed under the MIT License.

The underlying solver, scipopt/scip, is licensed under the Apache 2.0 license.

Installation

Install SCIP using Pkg.add: ```julia julia> import Pkg

julia> Pkg.add("SCIP") ```

In addition to installing the SCIP.jl package, this will also download and install the SCIP binaries. You do not need to install SCIP separately.

Custom installations

If you want a custom SCIP installation, you must manually install the SCIP binaries.

Binaries are available for download at https://www.scipopt.org/#download.

Once the binaries are installed, set the SCIPOPTDIR environment variable to temporarily point to the installation path (that is, depending on your operating system, $SCIPOPTDIR/lib/libscip.so, $SCIPOPTDIR/lib/libscip.dylib, or $SCIPOPTDIR/bin/libscip.dll must exist). Then, install SCIP.jl using Pkg.add and Pkg.build from the Julia command line: ```julia julia> ENV["SCIPOPTDIR"] = raw"C:\Program Files\SCIPOptSuite 9.1.1" # for Windows

julia> import Pkg

julia> Pkg.add("SCIP")

julia> Pkg.build("SCIP") ```

Use with JuMP

Use SCIP with JuMP as follows:

julia using JuMP, SCIP model = Model(SCIP.Optimizer) set_attribute(model, "display/verblevel", 0) set_attribute(model, "limits/gap", 0.05)

Options

See the SCIP documentation for a list of supported options.

MathOptInterface API

The SCIP optimizer supports the following constraints and attributes.

List of supported objective functions:

MOI.ObjectiveFunction{MOI.ScalarAffineFunction{Float64}}

List of supported variable types:

MOI.Reals

List of supported constraint types:

List of supported model attributes:

Design considerations

Wrapping the public API

All of the public API methods are wrapped and available within the SCIP package. This includes the scip_*.h and pub_*.h headers that are collected in scip.h, as well as all default constraint handlers (cons_*.h.)

The wrapped functions do not transform any data structures and work on the raw pointers (for example, SCIP* in C, Ptr{SCIP_} in Julia). Convenience wrapper functions based on Julia types are added as needed.

Memory management

Programming with SCIP requires dealing with variable and constraint objects that use reference counting for memory management.

The SCIP.Optimizer wrapper type collects lists of SCIP_VAR* and SCIP_CONS* under the hood, and it releases all references when it is garbage collected itself (via finalize).

When adding a variable (add_variable) or a constraint (add_linear_constraint), an integer index is returned. This index can be used to retrieve the SCIP_VAR* or SCIP_CONS* pointer via get_var and get_cons respectively.

Supported nonlinear operators

Supported operators in nonlinear expressions are as follows:

+
-
*
/
^
sqrt
exp
log
abs
cos
sin

Owner

Name: scipopt
Login: scipopt
Kind: organization

Website: scipopt.org
Repositories: 10
Profile: https://github.com/scipopt

Collection of software around the SCIP Optimization Suite (scipopt.org)

GitHub Events

Total

Fork event: 2
Create event: 41
Commit comment event: 15
Issues event: 37
Release event: 5
Watch event: 16
Delete event: 38
Member event: 1
Issue comment event: 76
Push event: 119
Pull request event: 86
Pull request review comment event: 12
Pull request review event: 11

Last Year

Fork event: 2
Create event: 41
Commit comment event: 15
Issues event: 37
Release event: 5
Watch event: 16
Delete event: 38
Member event: 1
Issue comment event: 76
Push event: 119
Pull request event: 86
Pull request review comment event: 12
Pull request review event: 11

Committers

Last synced: about 1 year ago

All Time

Total Commits: 948
Total Committers: 23
Avg Commits per committer: 41.217
Development Distribution Score (DDS): 0.425

Past Year

Commits: 25
Committers: 4
Avg Commits per committer: 6.25
Development Distribution Score (DDS): 0.6

Top Committers

Name	Email	Commits
Robert Schwarz	m**l@r**t	545
Mathieu Besançon	m**n@g**m	242
Erik Tadewaldt	t**t@z**e	48
Felipe Serrano	s**o@z**e	19
Ayush Pandey	a**p@g**m	16
odow	o**n@g**m	14
Gennesaret Tjusila	g**a@g**m	10
Miles Lubin	m**n@g**m	10
Gnimuc	q**i@g**m	8
Twan Koolen	k**n@g**m	7
Johannes Varga	j**a@s**t	6
Mathieu Besancon	b**n@z**e	4
GregPlowman	G****n	3
Lars Hellemo	L**o@s**o	3
hannahtro	j**e@g**m	3
Changhyun Kwon	c**n@u**u	2
Joaquim Garcia	j**a@p**m	2
Alexis Montoison	a**n@p**a	1
Julia TagBot	5****t	1
Santos Xavier, Alinson	a**r@a**v	1
Y. Yang	m****t	1
Yankai Cao	y**o@g**m	1
femtocleaner[bot]	f****]	1

Committer Domains (Top 20 + Academic)

zib.de: 3 anl.gov: 1 polymtl.ca: 1 psr-inc.com: 1 usf.edu: 1 sintef.no: 1 student.tuwien.ac.at: 1 rschwarz.net: 1

Issues and Pull Requests

Last synced: 6 months ago

All Time

Total issues: 67
Total pull requests: 152
Average time to close issues: 12 months
Average time to close pull requests: about 1 month
Total issue authors: 35
Total pull request authors: 12
Average comments per issue: 5.58
Average comments per pull request: 1.59
Merged pull requests: 130
Bot issues: 0
Bot pull requests: 0

Past Year

Issues: 11
Pull requests: 78
Average time to close issues: 24 days
Average time to close pull requests: 4 days
Issue authors: 7
Pull request authors: 3
Average comments per issue: 2.82
Average comments per pull request: 0.44
Merged pull requests: 68
Bot issues: 0
Bot pull requests: 0

View more stats

Top Authors

Issue Authors

matbesancon (16)
rschwarz (8)
odow (5)
LebedevRI (3)
ivborissov (2)
resmaeilbeigi (2)
stumarcus314 (2)
remi-garcia (2)
joehuchette (1)
JuliaTagBot (1)
foreverdyz (1)
mzy2240 (1)
karimianfard (1)
Wimmerer (1)
mavavilj (1)

Pull Request Authors

odow (80)
matbesancon (48)
gtjusila (10)
etadewal (6)
rschwarz (4)
hellemo (2)
hannahtro (2)
metab0t (1)
jovarga (1)
amontoison (1)
sbolusani (1)
Gnimuc (1)

Top Labels

Issue Labels

bug (1)

Pull Request Labels

bug (1)

Packages

Total packages: 1
Total downloads:
- julia 527 total

Total dependent packages: 2
Total dependent repositories: 0
Total versions: 44

juliahub.com: SCIP

Julia interface to SCIP solver

Documentation: https://docs.juliahub.com/General/SCIP/stable/
License: MIT
Latest release: 0.12.7
published 9 months ago

Versions: 44
Dependent Packages: 2
Dependent Repositories: 0
Downloads: 527 Total

Rankings

Forks count: 6.5%

Stargazers count: 9.1%

Dependent repos count: 9.9%

Average: 10.5%

Dependent packages count: 16.6%

Last synced: 6 months ago

Dependencies

.github/workflows/MINLP.yml actions

actions/cache v1 composite
actions/checkout v2 composite
julia-actions/julia-buildpkg v1 composite
julia-actions/setup-julia v1 composite

.github/workflows/TagBot.yml actions

JuliaRegistries/TagBot v1 composite

.github/workflows/ci.yml actions

actions/cache v1 composite
actions/checkout v2 composite
codecov/codecov-action v1 composite
julia-actions/julia-buildpkg v1 composite
julia-actions/julia-processcoverage v1 composite
julia-actions/julia-runtest v1 composite
julia-actions/setup-julia v1 composite

.github/workflows/format_check.yml actions

actions/checkout v1 composite
julia-actions/setup-julia latest composite

https://github.com/scipopt/scip.jl

Science Score: 36.0%

Keywords

Keywords from Contributors

Repository

Basic Info

Statistics

Topics

Metadata Files

README.md

SCIP.jl

Affiliation

Getting help

License

Installation

Custom installations

Use with JuMP

Options

MathOptInterface API

Design considerations

Wrapping the public API

Memory management

Supported nonlinear operators

Owner

GitHub Events

Total

Last Year

Committers

All Time

Past Year

Top Committers

Committer Domains (Top 20 + Academic)

Issues and Pull Requests

All Time

Past Year

Top Authors

Issue Authors

Pull Request Authors

Top Labels

Issue Labels

Pull Request Labels

Packages

juliahub.com: SCIP

Rankings

Dependencies