Controlling crossover
Documents parameters controlling barrier crossover.
The nature of the crossover step that follows barrier
is controlled by the parameter
barrier crossover algorithm
(CPX_PARAM_BARCROSSALG, BarCrossAlg
). That topic in the
Parameters Reference Manual explains the possible options of
the barrier crossover parameter.
At its default Automatic
setting, CPLEX invokes an
appropriate crossover step based on the problem type and the number of threads available.
To turn off the crossover step that normally follows barrier optimization, use the parameter
solution type for LP and QP
(CPX_PARAM_SOLUTIONTYPE, SolutionType
) documented in the
Parameters Reference Manual. When you use the solution type parameter
to tell CPLEX to seek a nonbasic solution, in
barrier optimization, you effectively eliminate barrier crossover.