ILOG CPLEX is a high-performance mathematical optimization solver developed by ILOG S.A. It addresses a wide range of problem classes, including linear programming (LP), mixed-integer programming (MIP), quadratic programming (QP), and quadratically constrained programming (QCP), using state-of-the-art algorithms such as simplex, barrier (interior-point), and branch-and-cut. Designed for large-scale, real-world optimization, CPLEX offers advanced presolve, cut generation, heuristics, parallel processing, and automated tuning to improve speed and solution quality. It provides APIs for C, C++, Java, .NET, and Python, and integrates with the Optimization Programming Language (OPL). Typical applications include planning, scheduling, supply chain optimization, finance, and network design across Windows, Linux, and macOS.
Originally created by ILOG S.A., the technology is now distributed by IBM as part of IBM ILOG CPLEX Optimization Studio. Notable capabilities include solution pools, MIP starts, conflict refinement, feasibility relaxation, and distributed MIP, with both commercial and academic licensing options available.
ILOG CPLEX is developed by ILOG S.A.. The most popular versions of this product among our users are: 9.0, 9.1, 10.0 and 10.1. The name of the program executable file is oplst.exe.
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