CPLEX 11

CPLEX 11 361 Force node presolve2 Perform probing on integer-infeasible variablespricelim (integer)Size for the pricing candidate list. Cplex dynamically determines a good value based on problem dimensions.Only very rarely will setting this option manually improve performance. Any non-negative integer valuesare valid.(default = 0, in which case it is determined automatically)printoptions (integer)Write the values of all options to the GAMS listing file. Valid values are no or yes.(default = 0)probe (integer)Determines the amount of probing performed on a MIP. Probing can be both very powerful and very timeconsuming. Setting the value to 1 can result in dramatic reductions or dramatic increases in solution timedepending on the particular model.(default = 0)-1 No probing0 Automatic1 Limited probing2 More probing3 Full probingprobetime (real)Limits the amount of time in seconds spent probing.(default = 1e+075)qpmakepsdind (integer)Determines whether Cplex will attempt to adjust a MIQP formulation, in which all the variables appearingin the quadratic term are binary. When this feature is active, adjustments will be made to the elementsof a quadratic matrix that is not nominally positive semi-definite (PSD, as required by Cplex for all QPformulations), to make it PSD, and will also attempt to tighten an already PSD matrix for better numericalbehavior. The default setting of 1 means yes but you can turn it off if necessary; most models shouldbenefit from the default setting.(default = 1)0 Off1 Onqpmethod (integer)Specifies which QP algorithm to use.At the default of 0 (automatic), barrier is used for QP problems and dual simplex for the root relaxation ofMIQP problems.(default = 0)0 Automatic1 Primal Simplex2 Dual Simplex3 Network Simplex4 Barrier