Initializing help system before first use

XSLP_SOLVER, LOCALSOLVER

Description
Selects the library to use for local solves
Type
Integer
Values
-1 
automatic selection, based on model characteristics and solver availability
0 
use Xpress-SLP (always available)
1 
use Knitro if available
2 
use Xpress-Optimizer if possible (convex quadratic problems only)
Default value
-1
Note

The presence of Knitro is detected automatically. Knitro can be used to solve any problem loaded into XSLP, independently from how the problem was loaded. XSLP_SOLVER is set to automatic, XSLP will be selected if any SLP specific construct has been loaded (these are ignored if Knitro is selected manually).

When solving problems to global optimality, the XSLP_SOLVER control is used to decide which local solver to call for reoptimizing NLP-infeasible solutions heuristically.

See also
XSLP_NLPSOLVER

Parent Topic Integer control parameters

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