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# BACKGROUNDMAXTHREADS

Description | Limit the number of threads to use in background jobs (for example in parallel to the root cut loop).
Type | Integer
Topic areas | Root, Parallel
Default value | -1, let Xpress decide.
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.
Category | Control

Parent Topic Control Parameters

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