APOPT

APOPT (for Advanced Process OPTimizer) is a software package for solving large-scale optimization problems of any of these forms:

• Linear programming (LP)
• Quadratic programming (QP)
• Quadratically constrained quadratic program (QCQP)
• Nonlinear programming (NLP)
• Mixed integer programming (MIP)
• Mixed integer linear programming (MILP)
• Mixed integer nonlinear programming (MINLP)

APOPT

Developer(s)	Advanced Process Solutions, LLC
Stable release	1.0.4 / October 1, 2021; 3 years ago (2021-10-01)
Operating system	Cross-Platform
Type	Technical computing
License	Proprietary
Website	apopt.com

Applications of the APOPT include chemical reactors,^[1][2] friction stir welding,^[3] prevention of hydrate formation in deep-sea pipelines,^[4][5] computational biology,^[6] solid oxide fuel cells,^[7][8] and flight controls for Unmanned Aerial Vehicles (UAVs).^[9]

Benchmark Testing

Standard benchmarks such as CUTEr and SBML curated models are used to test the performance of APOPT relative to solvers BPOPT, IPOPT, SNOPT, and MINOS. A combination of APOPT (Active Set SQP) and BPOPT (Interior Point Method) performed the best on 494 benchmark problems for solution speed and total fraction of problems solved.^[10]

See also

• APOPT is supported in AMPL, APMonitor, Gekko, Julia, MATLAB, Pyomo, and Python.