Which parameters control the solution pool?

Lists parameters to control the solution pool.

CPLEX provides parameters to control the solution pool. The table titled Table 1 summarizes these parameters. CPLEX Parameters Reference Manual documents each of these parameters in greater detail.

Table 1. Parameters for the solution pool
Purpose	Concert parameter	Callable Library parameter	Interactive Optimizer	Parameter Reference
Intensity	`SolnPoolIntensity`	`CPX_PARAM_SOLNPOOLINTENSITY`	`mip pool intensity`	solution pool intensity
Limit on populate (number of solutions generated)	`PopulateLim`	`CPX_PARAM_POPULATELIM`	`mip limits populate`	maximum number of solutions generated for solution pool by populate
Maximum capacity (number of solutions stored)	`SolnPoolCapacity`	`CPX_PARAM_SOLNPOOLCAPACITY`	`mip pool capacity`	maximum number of solutions kept in solution pool
Replacement strategy	`SolnPoolReplace`	`CPX_PARAM_SOLNPOOLREPLACE`	`mip pool replace`	solution pool replacement strategy
Relative objective gap	`SolnPoolGap`	`CPX_PARAM_SOLNPOOLGAP`	`mip pool relgap`	relative gap for solution pool
Absolute objective gap	`SolnPoolAGap`	`CPX_PARAM_SOLNPOOLAGAP`	`mip pool absgap`	absolute gap for solution pool

The MIP node limit parameter (NodeLim, CPX_PARAM_NODELIM) and optimizer time limit in seconds parameter (TiLim, CPX_PARAM_TILIM) also have an effect on the solution pool, just as they influence MIP optimization generally. For more detail about these parameters, see their entries in the CPLEX Parameters Reference Manual.