IBM CPLEX¶

IBM ILOG CPLEX has been a well known and widely used large-scale solver for over three decades. Its efficiency and robustness have been demonstrated through varied applications in thousands of commercial installations worldwide.

How to use it¶

CPLEX options consist of a single-word option, or an option followed by an = sign and a value; a space may be used as a separator in place of the =.

ampl: option solver cplex; # change the solver
ampl: option cplex_options 'option1=value1 option2=value2'; # specify options
ampl: solve; # solve the problem

How to install using amplpy:

# Install Python API for AMPL:
$ python -m pip install amplpy --upgrade

# Install AMPL & solver modules:
$ python -m amplpy.modules install cplex # install CPLEX

# Activate your license (e.g., free ampl.com/ce or ampl.com/courses licenses):
$ python -m amplpy.modules activate <your-license-uuid>

How to use:

from amplpy import AMPL
ampl = AMPL()
...
ampl.solve(solver="cplex", cplex_options="option1=value1 option2=value2")

Learn more about what we have to offer to implement and deploy Optimization in Python.

Resources¶

Solver options¶

Full list of solver options:

CPLEX Options

Changelog¶

CPLEX Changelog
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COPT Changelog

CPLEX Options