Initializing help system before first use

PREROOTWORKLIMIT

Description
Set an explicit work limit in work units for the Pre-root parallel heuristic phase. Any positive value also enables this phase and runs it until the PREROOTWORKLIMIT units of work are hit.
Type
Double
Topic areas
Parallel, Heuristics, Limits
Values
-1 
No explicit work limit for the Pre-root parallel heuristic phase. If enabled, the work limit for this phase is controlled via PREROOTEFFORT.
0 
Disable Pre-root parallel heuristics.
x>0 
Enable Pre-root parallel heuristics with an explicit work limit of x work units. If set, this work limit has precedence over any work limit set by PREROOTEFFORT.
Default value
-1
Note
A WORKLIMIT on the overall solution process also applies during pre-root parallel phase.
Note
It may happen that even if this control is set, Pre-root parallel heuristics terminate before this work limit is reached. This may happen due to stalling or if the heuristics employed are not applicable to the current problem
Affects routines
XPRSoptimize ( OPTIMIZE)
See also
PREROOTWORKLIMIT, HEUREMPHASIS
Category
Control

Parent Topic Control Parameters

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