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What's New

SYMPHONY has a new home!
  • We are now hosted on Github!
  • Project now managed in git.
  • Builds now use coinbrew.
  • Check out the Wiki for more information.
What is SYMPHONY?

SYMPHONY is an open-source solver for mixed-integer linear programs (MILPs) written in C. It can be used in three different main modes:

  • As a callable library through either the native C interface or through the Osi.
  • As an interactive solver using a command-line interface.
  • As a framework to build customized solvers for specific problem classes.
SYMPHONY can be executed in either parallel (distributed or shared memory) or sequential modes and has a number of advanced features that make it unique, including the ability to
  • solve biobjective MILPs,
  • warm start the solution procedure, and
  • perform basic sensitivity analyses.

This project is hosted by the COIN-OR Foundation.

 Contact Us

This site is maintained by

Ted Ralphs
CORAL Laboratory
Department of Industrial and Systems Engineering
Lehigh University
Bethlehem, PA

ted@lehigh.edu