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Download LINDO API USER MANUAL
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100 CHAPTER 2 LS_DPARAM_MIP_ITRLIM_IPM Environm This specifies the barrier-iteration limit for ent, the MIP solver. Possible values are Model nonnegative integers and -1 (no limit). The default is -1. LS_IPARAM_MIP_PREHEU_LEVEL Environm The heuristic level for the prerelax solver. ent, 1 is for solver decides, 0 is for nothing. 1 is Model for one-change, 2 is for one-change and two-change, and 3 is for depth first enumeration. Default is -1. LS_IPARAM_MIP_PREHEU_VAR_SEQ Environm The sequence of the variable considered by ent, the prerelax heuristic. If 1, then forward; if Model -1, then backward. Default is -1. LS_IPARAM_MIP_PREHEU_TC_ITERLIM Environm Iteration limit for the two change heuristic. ent, Default is 20000000. Model LS_IPARAM_MIP_PREHEU_DFE_VSTLIM Environm Limit for the variable visit in depth first ent, enumeration. Default is 200. Model LS_IPARAM_MIP_CONCURRENT_TOPOPT Environm This value specifies the concurrent MODE ent, optimization mode with cold start. Model See: LS_IPARAM_SOLVER_CONCURRENT _OPTMODE for possible values. The default is 0 LS_IPARAM_MIP_CONCURRENT_STRATE Environm Environment, Model This parameter controls the concurrent MIP strategy. GY ent, Possible values are: Model # LS_MTMODE_FREE = -1, Solver decides # LS_STRATEGY_USER = 0, Use the custom search strategy defined via a callback function for each thread. # LS_STRATEGY_PRIMIP = 1, Defines built-in priority lists for each thread. # LS_STRATEGY_NODEMIP = 2, Reserved for future use # LS_STRATEGY_HEUMIP = 3, Defines heuristic based strategies for each thread. Default is -1.
