Octeract Engine is a proprietary massively parallel deterministic global optimization solver for general Mixed-Integer Nonlinear Programs (MINLP).
As of August 2022 it is the first and only solver to solve the largest open transmission switching problems in the industry standard MINLPLIB[1] library, namely transswitch2736spp[5] and transswitch2736spr.
Octeract Engine is a suite of numerous solvers and techniques which are invoked automatically, or at the user's discretion.
It features parallel branch-and-bound solvers, numerous local heuristics which can be invoked independently of global optimization, as well as numerous specialized techniques to exploit special structure, such as the Sherali-Smith reformulation.
[8][9][10] Other notable features include: [10] Octeract Engine can read and write .nl, .lp and .mps files.