- Jun 12, 2016 IBM’s CPLEX is a commercial quality Optimization product. It can handle 10’s of 1000’s of variables as well as massive data sets. As with most commercial software it is very expensive, but they do offer a limited edition you can download to get some experience working with it. You can find the free downloads here: CPLEX Download.
- Cplex 12.6 download free. Development Tools downloads - IBM ILOG CPLEX Optimization Studio by IBM and many more programs are available for instant and free download.
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IBM ILOG CPLEX is the best known and most widely used large-scale solver. Its efficiency and robustness have been demonstrated over two decades in thousands of commercial installations worldwide.
Downloading the CPLEX 8.0 Student Edition for current users of command-line AMPL The CPLEX 8.0 student edition for AMPL is available for download for the following platforms. DEC (Compaq) Alpha workstations running OSF/1 v2.0; IBM PowerPC workstations running AIX; Intel (Pentium-compatible) PCs running Windows or Linux; Silicon Graphics workstations running IRIX 5.x or 6.x. Cplex 12.6 download free. Development Tools downloads - IBM ILOG CPLEX Optimization Studio by IBM and many more programs are available for instant and free download. IBM ILOG CPLEX Optimization Studio is a prescriptive analytics solution that enables rapid development and deployment of decision optimization models using mathematical and constraint programming. It combines a fully featured integrated development environment that supports Optimization Programming Language (OPL) and the high-performance CPLEX.
Summary
Developer: IBM ILOG
Current version: 20.1
Problem types supported: Linear and quadratic optimization in continuous and integer variables. Support is provided for both convex and nonconvex quadratic objectives, and for convex quadratic constraints.
Special forms detected: Logical implications in the form of “indicator” constraints. Convex quadratic expressions in objectives, and convex quadratic constraints of elliptic and conic types.
Algorithms available: For continuous problems, primal and dual simplex, interior-point (barrier); for integer problems, advanced branch-and-bound with presolve, feasibility heuristics, and cut generators. For continuous problems comprised mostly or entirely of linear network flow constraints, network simplex.
Special features: Shared-memory parallel processing for barrier, branch-and-bound. Concurrent optimization by several methods to determine best choice. Special facilities for parameter tuning and infeasibility diagnosis.
See also:ILOG CP for AMPL, covered by the CPLEX for AMPL license, for access to constraint programming and more general CPLEX handling of logical constraints.
Further information
IBM ILOG CPLEX website
CPLEX for AMPL option listing
CPLEX-AMPL interface source code with makefiles and instructions
Instructions for joining the IBM Academic Initiative
CPLEX for AMPL 12.2 User’s Guide
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