Initializing help system before first use

# BACKGROUNDMAXTHREADS

Description | Limits the number of threads to use in background jobs (for example in parallel to the root cut loop).
Type | Integer
Topic areas | Root, Parallel
Values |
-1 | The number of background threads is decided automatically.
≥0 | The number of background threads.
Default value | -1
Notes | If this is set to -1 (the default) then Xpress decides automatically how many threads to run. Otherwise this control limits the number of threads that Xpress will use for jobs in the background (for example in parallel to the root cut loop). Set this to 0 (zero) in order to disable jobs in the background. The MAXMIPTASKS does not apply to this control. If you want to have the same solution paths between hardware with different CPU counts or between runs with different thread counts then you should set this control to the same non-negative value in all runs.
Affects routines | XPRSmipoptimize ( MIPOPTIMIZE), XPRSoptimize ( OPTIMIZE).
See also | BACKGROUNDSELECT, HEURSEARCHBACKGROUNDSELECT, LPBACKGROUNDTHREADS.
Category | Control

Parent Topic Control Parameters

© 2001-2026 Fair Isaac Corporation. All rights reserved. This documentation is the property of Fair Isaac Corporation (“FICO”). Receipt or possession of this documentation does not convey rights to disclose, reproduce, make derivative works, use, or allow others to use it except solely for internal evaluation purposes to determine whether to purchase a license to the software described in this documentation, or as otherwise set forth in a written software license agreement between you and FICO (or a FICO affiliate). Use of this documentation and the software described in it must conform strictly to the foregoing permitted uses, and no other use is permitted.