Option Name |
MPL Name |
Solver Param |
ParamNr |
Type |
Default |
Min |
Max |
---|---|---|---|---|---|---|---|

Use Interior-point method | IPMalgorithm | IPMalgorithm | 1 | flag | 0 | 0 | 1 |

Use MIP preprocessing | MIPpreprocess | MIPpreprocess | 2 | flag | 0 | 0 | 1 |

Use MIP priority | MIPpriorityUP | MIPpriorityUP | 3 | flag | 0 | 0 | 1 |

Use presolve | Presolve | Presolve | 4 | flag | 0 | 0 | 1 |

Scaling | Scale | Scale | 5 | flag | 0 | 0 | 1 |

MIP LP relaxation | MIP | MIP | 6 | flag | 0 | 0 | 1 |

MIP log | MIPLogFrequency | MIPLogFrequency | 9 | int | 1 | 1 | MAXINT |

Reduced cost tolerance | DJTol | DJTol | 11 | real | 1e-5 | 1.0e-25 | 1.0 |

RHS tolerance | RHSTol | RHSTol | 12 | real | 1e-5 | 1.0e-25 | 1.0 |

Zero tolerance | ZEROTol | ZEROTol | 13 | freal | 1e-5 | 1.0e-25 | 1 |

Integral feasibility tolerance | MipIntegerTol | IntegerTol | 14 | real | 1e-3 | 1.0e-25 | 1 |

MIP time limit | MipSolTimeLimit | MaxMIPTime | 15 | real | 50000 | 0.0 | MAXREAL |

MIP Relative gap | MipRelativeGap | MIPCutoffRel | 16 | real | 0 | 0 | 1 |

Apply cut generation | LTolerance | LTolerance | 21 | flag | 1 | 0 | 1 |

Simplex iteration limit | MaxSSXIter | MaxSSXIter | 22 | int | 50000 | 1 | MAXINT |

IPM iteration limit | MaxIPMIter | MaxIPMIter | 23 | int | 80 | 1 | MAXINT |

Node limit | MipNodeLimit | MaxMIPNode | 24 | int | 50000 | 1 | MAXINT |

Integer solution limit | MaxMIPIntSol | MaxMIPIntSol | 25 | int | 300 | 1 | MAXINT |

Boolean option that determines whether to use the interior-point algorithm to use when solving LP problems. The default setting is not enabled.

Boolean option that determines whether to use the MIP preprocessor. The default setting is off, though for large or difficult MIPs this should be enabled.

Boolean option that determines whether to FortMP will use priority ordering when solving a MIP problem. The default setting is non enabled.

This is a flag that states whether to use FortMP's presolver when solving LPs. The default is off.

Boolean option that determines whether to scale the optimization problem. The default setting is not enabled.

This is a flag that states whether to solve a MIP problem as an LP (LP relaxation). The default is set to off.

Sets the frequency of information relayed to the log output during the MIP optimization procedure, default setting is one. Higher the value the more information is printed out.

Sets the tolerance for the reduced cost. In the pivot selection the rate of improvement is reflected by the sign and magnitude of the reduced cost of a variable, this tolerance means that the reduced cost value is considered negative if it is less than *reduced cost tolerance*, the default setting is 1e-5.

Sets the RHS tolerance, default setting is 0.00001.

Sets the tolerance in which a value will be considered zero if equal or less than the *zero tolerance*. The default is 0.00001.

An integer variable is considered integer feasible if the absolute difference from the nearest integer is smaller than this. The default value is 0.001.

This is the time limit in seconds for the branch-and-bound procedure. The default value is 50000.

Sets the relative cut-off tolerance, this becomes relevant once an integer solution has been found. From there on a maximum gap is determined by the Best Integer Solution found so far (the BIS), and this gap is simply the relative difference between the BIS and the best bound.

Boolean option that determines whether to enable FortMP's cut-generation procedures and the application of strong cuts before and during branch and bound. The default setting is off.

Sets the maximum number of iterations allowed in the simplex method. Default is 50000.

Sets the maximum number of iterations allowed during the interior-point method. Default is 80.

Sets the maximum number of nodes to be explored during the branch and bound process. Default is 50000.

The MIP solutions limit value limits the mixed integer optimization to finding only this number of integer solutions before stopping. The default is 300.