Initializing help system before first use

GLOBALPRESOLVEOBBT

Description
Controls the amount of work performed by Optimization-Based Bound Tightening (OBBT).
Type
Integer
Topic areas
Global, Propagation, Presolve
Values
-1 
Automatic. The solver decides how much effort goes into OBBT.
0 
Disabled. No OBBT will be performed.
1 
OBBT is run for a small subset of the variables, approximately equal to the square root of the number of total variables used in the solve, i.e., original and auxiliary.
2 
OBBT is run on a larger portion of the variables while keeping the computational effort limited w.r.t. the whole global solve.
3 
OBBT is run on all variables. This is most computationally taxing as a large number of LPs will be solved.
Default value
-1
Affects routines
XPRSoptimize ( OPTIMIZE).
Category
Control

Parent Topic Bit-vector controls

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