PStart

Type: double
Modifiable: Yes

The current simplex start vector. If you set PStart values for every variable in the model and DStart values for every constraint, then simplex will use those values to compute a warm start basis. If you'd like to retract a previously specified start, set any PStart value to GRB_UNDEFINED.

Note that any model modifications made after setting PStart (adding variables or constraints, changing coefficients, etc.) will discard the start. You should only set this attribute after you are done modifying your model.