Initializing help system before first use

NODEPRESOLVE

Description
This control determines whether some form of presolving should be performed at Branch and Bound nodes. Node presolve attempts to simplify the problem by detecting and removing redundant constraints, tightening variable bounds, etc.
Type
Integer
Topic areas
Branch and Bound Search, Presolve
Values
-1 
Automatic: the solver decides which reductions to apply, and to which extent.
0 
Disabled.
1 
Minimal node presolve is applied.
2 
Standard node presolve is applied.
Default value
-1
Note
The user can control which presolve operations are performed at nodes with the dedicated controls NODEREDCOSTTIGHTEN, NODEAPPLIEDBOUNDS, NODEDUALREDUCTIONS, NODEPROBINGEFFORT and the bits in MIPPRESOLVE. Note however that if node presolve is disabled by NODEPRESOLVE, then those will have no effect.
Affects routines
XPRSmipoptimize ( MIPOPTIMIZE).
See also
NODEREDCOSTTIGHTEN, NODEAPPLIEDBOUNDS, NODEDUALREDUCTIONS, NODEPROBINGEFFORT, MIPPRESOLVE.
Category
Control

Parent Topic Control Parameters

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