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PreDual


PreDual

Controls presolve model dualization
 Type: int
 Default value: -1
 Minimum value: -1
 Maximum value: 2

Controls whether presolve forms the dual of a continuous model. Depending on the structure of the model, solving the dual can reduce overall solution time. The default setting uses a heuristic to decide. Setting 0 forbids presolve from forming the dual, while setting 1 forces it to take the dual. Setting 2 employs a more expensive heuristic that forms both the presolved primal and dual models (on two threads), and heuristically chooses one of them.

Note: LP only

For examples of how to query or modify parameter values from our different APIs, refer to our Parameter Examples.