User Guides =========== The usage guide works one example through from start to finish: calibrating survey weights, from the mathematics and a scipy baseline to a fast Cvxium solve. Along the way it writes a new objective and a new constraint layer, explains how Cvxium assembles Hessian structure, and covers barrier initialization, caching, logging, Pareto frontiers, and conic and saddle-point problems. The guide to large linear programs solves a media plan with 20,000 variables and 50 constraints, compares Cvxium with scipy's ``linprog``, and explains the structure and the settings behind the speedup. The guide to banded quadratic programs smooths 100,000 nonnegative power readings with a tridiagonal quadratic, compares Cvxium with a steel-manned cvxpy across five solvers, and shows how a band structure carries through every Newton step. .. toctree:: :maxdepth: 1 usage linear_programs banded_quadratic_programs