presolve switch
Decides whether CPLEX applies presolve during preprocessing.
Purpose
Presolve switch
| API | Parameter Name | Name prior to V12.6.0 |
|---|---|---|
| C | CPXPARAM_Preprocessing_Presolve | CPX_PARAM_PREIND |
| C++ | IloCplex::Param::Preprocessing::Presolve | PreInd (bool) |
| OPL | preind | |
| Interactive | preprocessing presolve | preprocessing presolve |
| Identifier | 1030 | 1030 |
Description
Decides whether CPLEX applies presolve during preprocessing. When set to 1 (one), the default, this parameter invokes CPLEX presolve to simplify and reduce problems. In other words, this parameter turns on or off presolve during preprocessing.
To limit the number of passes that CPLEX carries out in presolve, use another parameter: limit on the number of presolve passes made.
| Value | bool | Symbol | Interactive | Meaning |
|---|---|---|---|---|
| 0 | false | CPX_OFF | no | Do not apply presolve |
| 1 | true | CPX_ON | yes | Apply presolve; default |