Model scaling
  Type: int
  Default value: -1
  Minimum value: -1
  Maximum value: 3

Controls model scaling. By default, the rows and columns of the model are scaled in order to improve the numerical properties of the constraint matrix. The scaling is removed before the final solution is returned. Scaling typically reduces solution times, but it may lead to larger constraint violations in the original, unscaled model. Turning off scaling (ScaleFlag=0) can sometimes produce smaller constraint violations. Choosing a different scaling option can sometimes improve performance for particularly numerically difficult models. Using geometric mean scaling (ScaleFlag=2) is especially well suited for models with a wide range of coefficients in the constraint matrix rows or columns. Settings 1 and 3 are not as directly connected to any specific model characteristics, so experimentation with both settings may be needed to assess performance impact.

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