Table of the commands of the Interactive Optimizer

These commands of the Interactive Optimizer also link to samples or further documentation.

Command Option 1 Option 2 Example
add   Adding constraints and bounds in Getting Started
baropt   Using alternative optimizers in Getting Started
baropt dualopt
baropt primopt
baropt stop
change bounds Changing bounds in Getting Started
change coefficient Changing coefficients of variables in Getting Started
change delete Deleting entire constraints or variables in Getting Started
change delete constraints
change delete qconstraints
change delete filters  
change delete indconstraints
change delete mipstarts MIP starts and the Interactive Optimizer in User's Manual
change delete solutions  
change delete sos
change delete variables
change delete equality
change delete greater-than
change delete less-than
change name   Changing constraint or variable names in Getting Started
change objective   Objective and RHS coefficients in Getting Started
change problem type

Using the MIP solution

Changing problem type in QPs

Diagnosing QP infeasibility in User’s Manual

change problem fixed i Accessing a solution in the solution pool in User’s Manual
change qpterm   Changing quadratic terms in User’s Manual
change rhs   Objective and RHS coefficients in Getting Started
change sense   Changing sense in Getting Started
change type   Changing variable type in User’s Manual
change values   Changing small values to zero in Getting Started
display auxilliary filters displays names of filters associated with solution pool; index starts at 1 (one)
display auxilliary mipstarts displays names of MIP starts; index starts at 1 (one)
display auxilliary summary displays information about filters, MIP starts, priorities, bases
display conflict all Displaying a conflict in the Interactive Optimizer in User’s Manual
display conflict constraints Displaying a conflict in the Interactive Optimizer in User’s Manual
display conflict indicators
display conflict qconstraints
display conflict sos
display conflict variables Displaying a conflict in the Interactive Optimizer in User’s Manual
display problem all Displaying a problem in Getting Started
display problem binaries Table 1 in User’s Manual
display problem bounds Displaying bounds in Getting Started
display problem constraints Displaying constraints in Getting Started
display problem generals Table 1 in User’s Manual
display problem histogram Detecting and eliminating dense columns in User’s Manual or Displaying a histogram of nonzero counts in Getting Started
display problem indicators
display problem integers Table 1 in User’s Manual
display problem names Displaying variable or constraint names in Getting Started
display problem objectives Displaying the objective functions in Getting Started
display problem qconstraints
display problem qpvariables
display problem semi-continuous
display problem sos
display problem stats Solve the problem you intended or Table 1 in User’s Manual
display problem variable
display sensitivity lb Performing sensitivity analysis in Getting Started
display sensitivity objective Performing sensitivity analysis in Getting Started
display sensitivity rhs Performing sensitivity analysis in Getting Started
display sensitivity ub Performing sensitivity analysis in Getting Started
display settings   Displaying parameter settings in Getting Started
display settings all Displaying parameter settings in Getting Started
display settings changed Displaying parameter settings in Getting Started
display solution basis
display solution bestbound
display solution difference i j Examining the solution pool in User’s Manual
display solution dual
display solution kappa Measuring problem sensitivity with basis condition number kappa in User’s Manual
display solution list i n Examining the solution pool in User’s Manual
display solution member Examining the solution pool in User’s Manual
display solution objective
display solution pool Examining the solution pool in User’s Manual
display solution qcslacks
display solution quality Coping with an ill-conditioned problem or handling unscaled infeasibilities or Understanding solution quality from the barrier LP optimizer in User’s Manual
display solution reduced
display solution slacks Displaying post-solution information in Getting Started
display solution variables Displaying post-solution information in Getting Started
display solution number i objective Examining the solution pool in User’s Manual
display solution number i qcslacks
display solution number i quality
display solution number i slacks
display solution number i variables
enter   Entering a problem in Getting Started
feasopt constraints   Invoking FeasOpt in User’s Manual
feasopt variables   Invoking FeasOpt in User’s Manual
feasopt all   Invoking FeasOpt in User’s Manual
help   Using help in Getting Started
mipopt   Using the mixed integer optimizer in User’s Manual
netopt   Example: network optimizer in the Interactive Optimizer or CPX_ALG_HYBNETOPT inTable 1in User’s Manual
optimize   Solving a problem in Getting Started
populate   Populating the solution pool in User’s Manual
primopt   Using alternative optimizers in Getting Started
quit   Quitting CPLEX in Getting Started
read configurationfile vmc Using Open MPI with distributed parallel MIP in User's Manual
read filename type Starting from an advanced basis or Understanding the network log file or Filter files in User’s Manual
read fileencoding string file encoding switch in Parameters Reference Manual
set advance   Starting from an advanced basis in User’s Manual
set barrier   Using the barrier optimizer in User’s Manual
set barrier algorithm Using the barrier optimizer or Choosing an ordering algorithm in User’s Manual
set barrier colnonzeros Detecting and eliminating dense columns in User’s Manual
set barrier convergetol
set barrier crossover
set barrier display level Using the barrier optimizer or Numeric instability due to elimination of too many dense columns in User’s Manual
set barrier limits corrections Change the limit on barrier corrections in User’s Manual
set barrier limits growth
set barrier limits iterations
set barrier limits objrange Difficulties with unbounded problems in User’s Manual
set barrier ordering
set barrier qcpconvergetol
set barrier startalg
set clocktype  
set conflict display level
set defaults   Resetting defaults in Getting Started
set distmip config mpi Using Open MPI with distributed parallel MIP in User's Manual
set distmip config * Distributed parallel MIP in the Interactive Optimizer in User's Manual
set emphasis memory Lack of memory or Memory emphasis: letting the optimizer use disk for storage in User’s Manual
set emphasis mip Emphasizing feasibility and optimality in User’s Manual
set emphasis numerical Numerical emphasis settings (LP) or Numerical emphasis settings (barrier) in User’s Manual
set feasopt tolerance
set logfile filename Filing iteration logs in Getting Started
set lpmethod  
set mip cuts all
set mip cuts class Table 1 in User’s Manual
set mip cuts cliques
set mip cuts covers
set mip cuts disjunctive
set mip cuts flowcovers
set mip cuts gomory
set mip cuts gubcovers
set mip cuts implied
set mip cuts mcfcut
set mip cuts mircut
set mip cuts pathcut
set mip cuts zerohalf Zero-half cuts in User's Manual
set mip display
set mip interval
set mip limits aggforcut
set mip limits cutpasses
set mip limits cutsfactor Parameters affecting cuts in User’s Manual
set mip limits gomorycand
set mip limits gomorypass
set mip limits nodes Table 1 in User’s Manual
set mip limits polishtime
set mip limits populate Parameters of the solution pool in User’s Manual
set mip limits probetime
set mip limits repairtries
set mip limits solutions Table 1 in User’s Manual
set mip limits strongcand
set mip limits strongit
set mip limits treememory Reset the tree memory parameter in User’s Manual
set mip ordtype
set mip pool absgap Parameters of the solution pool in User’s Manual
set mip pool capacity Parameters of the solution pool in User’s Manual
set mip pool intensity Parameters of the solution pool in User’s Manual
set mip pool relgap Parameters of the solution pool in User’s Manual
set mip pool replace Parameters of the solution pool in User’s Manual
set mip strategy backtrack Table 1 in User’s Manual
set mip strategy bbinterval Table 1 in User’s Manual
set mip strategy branch Table 1 in User’s Manual
set mip strategy dive
set mip strategy file
set mip strategy heuristicfreq Heuristics in User’s Manual
set mip strategy kappastats  
set mip strategy lbheuristic
set mip strategy nodeselect Table 1 in User’s Manual
set mip strategy order
set mip strategy presolvenode
set mip strategy probe Probing in User’s Manual
set mip strategy rinsheur Relaxation induced neighborhood search (RINS) heuristic in User's Manual
set mip strategy search MIP dynamic search switch in Parameters Reference Manual
set mip strategy startalgorithm
set mip strategy variableselect Table 1 in User’s Manual
set mip strategy subalgorithm NodeAlg parameter and difficult subproblems in User’s Manual
set mip submip nodelimit limit on nodes explored when CPLEX solves a subMIP in CPLEX Parameters Reference Manual
set mip submip scale scale parameter for subMIPs in CPLEX Parameters Reference Manual
set mip submip startalg algorithm for initial MIP relaxation of a subMIP of a MIP in CPLEX Parameters Reference Manual
set mip submip subalg algorithm for subproblems of a subMIP of a MIP in CPLEX Parameters Reference Manual
set mip tolerances absmipgap
set mip tolerances integrality
set mip tolerances lowercutoff
set mip tolerances mipgap
set mip tolerances objdifference Time wasted on overly tight optimality criteria in User’s Manual
set mip tolerances relobjdifference
set mip tolerances uppercutoff
set network display Understanding the network log file in User’s Manual
set network iterations Limiting iterations in the network optimizer in User’s Manual
set network netfind
set network pricing Selecting a pricing algorithm for the network optimizer in User’s Manual
set network tolerances feasibility Controlling tolerance in User’s Manual
set network tolerances optimality
set output mpslong
set parallel mode Using parallel optimizers in the Interactive Optimizer in User’s Manual
set paramdisplay yes or no changed parameter display switch in CPLEX Parameters Reference Manual
set preprocessing aggregator

Preprocessing

Preprocessing and memory requirements

Table 1 in User’s Manual
set preprocessing boundstrength Table 1 in User’s Manual
set preprocessing coeffreduce
Table 1

Examples: optimizing a simple MIP problem in User’s Manual

set preprocessing dependency

Preprocessing (continuous)

Preprocessing (discrete) in User’s Manual

set preprocessing dual Using a starting-point heuristic in User’s Manual
set preprocessing qcpdual Accessing dual values and reduced costs of QCP solutions in User’s Manual
set preprocessing fill Preprocessing in User’s Manual
set preprocessing linear
set preprocessing numpass
set preprocessing presolve

Preprocessing and memory requirements (continuous) in User’s Manual

Table 1 in User’s Manual
set preprocessing qpmakepsd
set preprocessing reduce

Preprocessing (continuous) or

Preprocessing and feasibility (discrete) in User’s Manual

set preprocessing relax Table 1 in User’s Manual
set preprocessing repeatpresolve Preprocessing: presolver and aggregator (discrete) in User’s Manual
set preprocessing symmetry
set qpmethod  
set randomseed   random seed
set read constraints
set read datacheck Displaying problem statistics in Getting Started
set record yes recording switch in Parameters Reference Manual
set read nonzeros
set read qpnonzeros
set read scale Scaling in User’s Manual
set read variables
set sifting algorithm
set sifting display
set sifting iterations
set simplex crash Table 5 in User’s Manual
set simplex dgradient
set simplex display
set simplex limits iterations
set simplex limits lowerobj
set simplex limits perturbation N Stalling due to degeneracy in User’s Manual
set simplex limits singularity Repeated singularities in User’s Manual
set simplex limits upperobj  
set simplex perturbationlimit 0/1 C Stalling due to degeneracy in User’s Manual
set simplex pgradient
set simplex pricing
set simplex refactor Refactoring frequency and memory requirements in User’s Manual
set simplex tolerances feasibility Maximum bound infeasibility: identifying largest bound violation in User’s Manual
set simplex tolerances markowitz Inability to stay feasible in User’s Manual
set simplex tolerances optimality Maximum reduced-cost infeasibility in User’s Manual
set threads  
set timelimit   Table 1 in User’s Manual
set tune display i Tuning tool in User’s Manual
set workdir prompt for directory Memory emphasis: letting the optimizer use disk for storage in User’s Manual
set workmem prompt for new value of working memory available Memory emphasis: letting the optimizer use disk for storage or Table 1 in User’s Manual
tranopt   Solve the problem currently in memory by a dual (transposed) simplex method.
tools conflict   Meet the conflict refiner in the Interactive Optimizer in User’s Manual
tools runseeds n Evaluating variability
tools tune filenames parameterfile . prm Examples: time limits on tuning in the Interactive Optimizer and Fixing parameters and tuning multiple models in the Interactive Optimizer in User’s Manual
write filenames type

Preprocessing (continuous) or

Repeated singularities or

Difficulty solving subproblems: overcoming degeneracy or

MIP starts and the Interactive Optimizer or

Saving QP problems in User’s Manual

write filename.sol n or all How to enumerate all solutions in User’s Manual
xecute command   Executing operating system commands in Getting Started