10.2 Parameters (alphabetical list sorted by type)¶

Double parameters
Integer parameters
String parameters

10.2.1 Double parameters¶

MSK_DPAR_ANA_SOL_INFEAS_TOL¶

If a constraint violates its bound with an amount larger than this value, the constraint name, index and violation will be printed by the solution analyzer.

Default: 1e-6
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_ANA_SOL_INFEAS_TOL 1e-6 file
Groups: Analysis

MSK_DPAR_BASIS_REL_TOL_S¶

Maximum relative dual bound violation allowed in an optimal basic solution.

Default: 1.0e-12
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_BASIS_REL_TOL_S 1.0e-12 file
Groups: Simplex optimizer, Termination criteria

MSK_DPAR_BASIS_TOL_S¶

Maximum absolute dual bound violation in an optimal basic solution.

Default: 1.0e-6
Accepted: [1.0e-9; +inf]
Example: mosek -d MSK_DPAR_BASIS_TOL_S 1.0e-6 file
Groups: Simplex optimizer, Termination criteria

MSK_DPAR_BASIS_TOL_X¶

Maximum absolute primal bound violation allowed in an optimal basic solution.

Default: 1.0e-6
Accepted: [1.0e-9; +inf]
Example: mosek -d MSK_DPAR_BASIS_TOL_X 1.0e-6 file
Groups: Simplex optimizer, Termination criteria

MSK_DPAR_CHECK_CONVEXITY_REL_TOL¶

Not in use.

Default: 1e-10
Accepted: [0; +inf]
Example: mosek -d MSK_DPAR_CHECK_CONVEXITY_REL_TOL 1e-10 file
Groups: Interior-point method

MSK_DPAR_DATA_SYM_MAT_TOL¶

Absolute zero tolerance for elements in in symmetric matrices. If any value in a symmetric matrix is smaller than this parameter in absolute terms MOSEK will treat the values as zero and generate a warning.

Default: 1.0e-12
Accepted: [1.0e-16; 1.0e-6]
Example: mosek -d MSK_DPAR_DATA_SYM_MAT_TOL 1.0e-12 file
Groups: Data check

MSK_DPAR_DATA_SYM_MAT_TOL_HUGE¶

An element in a symmetric matrix which is larger than this value in absolute size causes an error.

Default: 1.0e20
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_DATA_SYM_MAT_TOL_HUGE 1.0e20 file
Groups: Data check

MSK_DPAR_DATA_SYM_MAT_TOL_LARGE¶

An element in a symmetric matrix which is larger than this value in absolute size causes a warning message to be printed.

Default: 1.0e10
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_DATA_SYM_MAT_TOL_LARGE 1.0e10 file
Groups: Data check

MSK_DPAR_DATA_TOL_AIJ_HUGE¶

An element in \(A\) which is larger than this value in absolute size causes an error.

Default: 1.0e20
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_DATA_TOL_AIJ_HUGE 1.0e20 file
Groups: Data check

MSK_DPAR_DATA_TOL_AIJ_LARGE¶

An element in \(A\) which is larger than this value in absolute size causes a warning message to be printed.

Default: 1.0e10
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_DATA_TOL_AIJ_LARGE 1.0e10 file
Groups: Data check

MSK_DPAR_DATA_TOL_BOUND_INF¶

Any bound which in absolute value is greater than this parameter is considered infinite.

Default: 1.0e16
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_DATA_TOL_BOUND_INF 1.0e16 file
Groups: Data check

MSK_DPAR_DATA_TOL_BOUND_WRN¶

If a bound value is larger than this value in absolute size, then a warning message is issued.

Default: 1.0e8
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_DATA_TOL_BOUND_WRN 1.0e8 file
Groups: Data check

MSK_DPAR_DATA_TOL_C_HUGE¶

An element in \(c\) which is larger than the value of this parameter in absolute terms is considered to be huge and generates an error.

Default: 1.0e16
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_DATA_TOL_C_HUGE 1.0e16 file
Groups: Data check

MSK_DPAR_DATA_TOL_CJ_LARGE¶

An element in \(c\) which is larger than this value in absolute terms causes a warning message to be printed.

Default: 1.0e8
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_DATA_TOL_CJ_LARGE 1.0e8 file
Groups: Data check

MSK_DPAR_DATA_TOL_QIJ¶

Absolute zero tolerance for elements in \(Q\) matrices.

Default: 1.0e-16
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_DATA_TOL_QIJ 1.0e-16 file
Groups: Data check

MSK_DPAR_DATA_TOL_X¶

Zero tolerance for constraints and variables i.e. if the distance between the lower and upper bound is less than this value, then the lower and upper bound is considered identical.

Default: 1.0e-8
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_DATA_TOL_X 1.0e-8 file
Groups: Data check

MSK_DPAR_INTPNT_CO_TOL_DFEAS¶

Dual feasibility tolerance used by the interior-point optimizer for conic problems.

Default: 1.0e-8
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_CO_TOL_DFEAS 1.0e-8 file
See also: MSK_DPAR_INTPNT_CO_TOL_NEAR_REL
Groups: Interior-point method, Termination criteria, Conic interior-point method

MSK_DPAR_INTPNT_CO_TOL_INFEAS¶

Infeasibility tolerance used by the interior-point optimizer for conic problems. Controls when the interior-point optimizer declares the model primal or dual infeasible. A small number means the optimizer gets more conservative about declaring the model infeasible.

Default: 1.0e-12
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_CO_TOL_INFEAS 1.0e-12 file
Groups: Interior-point method, Termination criteria, Conic interior-point method

MSK_DPAR_INTPNT_CO_TOL_MU_RED¶

Relative complementarity gap tolerance used by the interior-point optimizer for conic problems.

Default: 1.0e-8
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_CO_TOL_MU_RED 1.0e-8 file
Groups: Interior-point method, Termination criteria, Conic interior-point method

MSK_DPAR_INTPNT_CO_TOL_NEAR_REL¶

Optimality tolerance used by the interior-point optimizer for conic problems. If MOSEK cannot compute a solution that has the prescribed accuracy then it will check if the solution found satisfies the termination criteria with all tolerances multiplied by the value of this parameter. If yes, then the solution is also declared optimal.

Default: 1000
Accepted: [1.0; +inf]
Example: mosek -d MSK_DPAR_INTPNT_CO_TOL_NEAR_REL 1000 file
Groups: Interior-point method, Termination criteria, Conic interior-point method

MSK_DPAR_INTPNT_CO_TOL_PFEAS¶

Primal feasibility tolerance used by the interior-point optimizer for conic problems.

Default: 1.0e-8
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_CO_TOL_PFEAS 1.0e-8 file
See also: MSK_DPAR_INTPNT_CO_TOL_NEAR_REL
Groups: Interior-point method, Termination criteria, Conic interior-point method

MSK_DPAR_INTPNT_CO_TOL_REL_GAP¶

Relative gap termination tolerance used by the interior-point optimizer for conic problems.

Default: 1.0e-8
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_CO_TOL_REL_GAP 1.0e-8 file
See also: MSK_DPAR_INTPNT_CO_TOL_NEAR_REL
Groups: Interior-point method, Termination criteria, Conic interior-point method

MSK_DPAR_INTPNT_QO_TOL_DFEAS¶

Dual feasibility tolerance used by the interior-point optimizer for quadratic problems.

Default: 1.0e-8
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_QO_TOL_DFEAS 1.0e-8 file
See also: MSK_DPAR_INTPNT_QO_TOL_NEAR_REL
Groups: Interior-point method, Termination criteria

MSK_DPAR_INTPNT_QO_TOL_INFEAS¶

Infeasibility tolerance used by the interior-point optimizer for quadratic problems. Controls when the interior-point optimizer declares the model primal or dual infeasible. A small number means the optimizer gets more conservative about declaring the model infeasible.

Default: 1.0e-12
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_QO_TOL_INFEAS 1.0e-12 file
Groups: Interior-point method, Termination criteria

MSK_DPAR_INTPNT_QO_TOL_MU_RED¶

Relative complementarity gap tolerance used by the interior-point optimizer for quadratic problems.

Default: 1.0e-8
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_QO_TOL_MU_RED 1.0e-8 file
Groups: Interior-point method, Termination criteria

MSK_DPAR_INTPNT_QO_TOL_NEAR_REL¶

Optimality tolerance used by the interior-point optimizer for quadratic problems. If MOSEK cannot compute a solution that has the prescribed accuracy then it will check if the solution found satisfies the termination criteria with all tolerances multiplied by the value of this parameter. If yes, then the solution is also declared optimal.

Default: 1000
Accepted: [1.0; +inf]
Example: mosek -d MSK_DPAR_INTPNT_QO_TOL_NEAR_REL 1000 file
Groups: Interior-point method, Termination criteria

MSK_DPAR_INTPNT_QO_TOL_PFEAS¶

Primal feasibility tolerance used by the interior-point optimizer for quadratic problems.

Default: 1.0e-8
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_QO_TOL_PFEAS 1.0e-8 file
See also: MSK_DPAR_INTPNT_QO_TOL_NEAR_REL
Groups: Interior-point method, Termination criteria

MSK_DPAR_INTPNT_QO_TOL_REL_GAP¶

Relative gap termination tolerance used by the interior-point optimizer for quadratic problems.

Default: 1.0e-8
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_QO_TOL_REL_GAP 1.0e-8 file
See also: MSK_DPAR_INTPNT_QO_TOL_NEAR_REL
Groups: Interior-point method, Termination criteria

MSK_DPAR_INTPNT_TOL_DFEAS¶

Dual feasibility tolerance used by the interior-point optimizer for linear problems.

Default: 1.0e-8
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_TOL_DFEAS 1.0e-8 file
Groups: Interior-point method, Termination criteria

MSK_DPAR_INTPNT_TOL_DSAFE¶

Controls the initial dual starting point used by the interior-point optimizer. If the interior-point optimizer converges slowly and/or the constraint or variable bounds are very large, then it might be worthwhile to increase this value.

Default: 1.0
Accepted: [1.0e-4; +inf]
Example: mosek -d MSK_DPAR_INTPNT_TOL_DSAFE 1.0 file
Groups: Interior-point method

MSK_DPAR_INTPNT_TOL_INFEAS¶

Infeasibility tolerance used by the interior-point optimizer for linear problems. Controls when the interior-point optimizer declares the model primal or dual infeasible. A small number means the optimizer gets more conservative about declaring the model infeasible.

Default: 1.0e-10
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_TOL_INFEAS 1.0e-10 file
Groups: Interior-point method, Termination criteria

MSK_DPAR_INTPNT_TOL_MU_RED¶

Relative complementarity gap tolerance used by the interior-point optimizer for linear problems.

Default: 1.0e-16
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_TOL_MU_RED 1.0e-16 file
Groups: Interior-point method, Termination criteria

MSK_DPAR_INTPNT_TOL_PATH¶

Controls how close the interior-point optimizer follows the central path. A large value of this parameter means the central path is followed very closely. On numerically unstable problems it may be worthwhile to increase this parameter.

Default: 1.0e-8
Accepted: [0.0; 0.9999]
Example: mosek -d MSK_DPAR_INTPNT_TOL_PATH 1.0e-8 file
Groups: Interior-point method

MSK_DPAR_INTPNT_TOL_PFEAS¶

Primal feasibility tolerance used by the interior-point optimizer for linear problems.

Default: 1.0e-8
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_TOL_PFEAS 1.0e-8 file
Groups: Interior-point method, Termination criteria

MSK_DPAR_INTPNT_TOL_PSAFE¶

Controls the initial primal starting point used by the interior-point optimizer. If the interior-point optimizer converges slowly and/or the constraint or variable bounds are very large, then it may be worthwhile to increase this value.

Default: 1.0
Accepted: [1.0e-4; +inf]
Example: mosek -d MSK_DPAR_INTPNT_TOL_PSAFE 1.0 file
Groups: Interior-point method

MSK_DPAR_INTPNT_TOL_REL_GAP¶

Relative gap termination tolerance used by the interior-point optimizer for linear problems.

Default: 1.0e-8
Accepted: [1.0e-14; +inf]
Example: mosek -d MSK_DPAR_INTPNT_TOL_REL_GAP 1.0e-8 file
Groups: Termination criteria, Interior-point method

MSK_DPAR_INTPNT_TOL_REL_STEP¶

Relative step size to the boundary for linear and quadratic optimization problems.

Default: 0.9999
Accepted: [1.0e-4; 0.999999]
Example: mosek -d MSK_DPAR_INTPNT_TOL_REL_STEP 0.9999 file
Groups: Interior-point method

MSK_DPAR_INTPNT_TOL_STEP_SIZE¶

Minimal step size tolerance. If the step size falls below the value of this parameter, then the interior-point optimizer assumes that it is stalled. In other words the interior-point optimizer does not make any progress and therefore it is better to stop.

Default: 1.0e-6
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_INTPNT_TOL_STEP_SIZE 1.0e-6 file
Groups: Interior-point method

MSK_DPAR_LOWER_OBJ_CUT¶

If either a primal or dual feasible solution is found proving that the optimal objective value is outside the interval \([\) MSK_DPAR_LOWER_OBJ_CUT, MSK_DPAR_UPPER_OBJ_CUT \(]\), then MOSEK is terminated.

Default: -1.0e30
Accepted: [-inf; +inf]
Example: mosek -d MSK_DPAR_LOWER_OBJ_CUT -1.0e30 file
See also: MSK_DPAR_LOWER_OBJ_CUT_FINITE_TRH
Groups: Termination criteria

MSK_DPAR_LOWER_OBJ_CUT_FINITE_TRH¶

If the lower objective cut is less than the value of this parameter value, then the lower objective cut i.e. MSK_DPAR_LOWER_OBJ_CUT is treated as \(-\infty\).

Default: -0.5e30
Accepted: [-inf; +inf]
Example: mosek -d MSK_DPAR_LOWER_OBJ_CUT_FINITE_TRH -0.5e30 file
Groups: Termination criteria

MSK_DPAR_MIO_DJC_MAX_BIGM¶

Maximum allowed big-M value when reformulating disjunctive constraints to linear constraints. Higher values make it more likely that a disjunction is reformulated to linear constraints, but also increase the risk of numerical problems.

Default: 1.0e6
Accepted: [0; +inf]
Example: mosek -d MSK_DPAR_MIO_DJC_MAX_BIGM 1.0e6 file
Groups: Mixed-integer optimization

MSK_DPAR_MIO_MAX_TIME¶

This parameter limits the maximum time spent by the mixed-integer optimizer. A negative number means infinity.

Default: -1.0
Accepted: [-inf; +inf]
Example: mosek -d MSK_DPAR_MIO_MAX_TIME -1.0 file
Groups: Mixed-integer optimization, Termination criteria

MSK_DPAR_MIO_REL_GAP_CONST¶

This value is used to compute the relative gap for the solution to an integer optimization problem.

Default: 1.0e-10
Accepted: [1.0e-15; +inf]
Example: mosek -d MSK_DPAR_MIO_REL_GAP_CONST 1.0e-10 file
Groups: Mixed-integer optimization, Termination criteria

MSK_DPAR_MIO_TOL_ABS_GAP¶

Absolute optimality tolerance employed by the mixed-integer optimizer.

Default: 0.0
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_MIO_TOL_ABS_GAP 0.0 file
Groups: Mixed-integer optimization

MSK_DPAR_MIO_TOL_ABS_RELAX_INT¶

Absolute integer feasibility tolerance. If the distance to the nearest integer is less than this tolerance then an integer constraint is assumed to be satisfied.

Default: 1.0e-5
Accepted: [1e-9; +inf]
Example: mosek -d MSK_DPAR_MIO_TOL_ABS_RELAX_INT 1.0e-5 file
Groups: Mixed-integer optimization

MSK_DPAR_MIO_TOL_FEAS¶

Feasibility tolerance for mixed integer solver.

Default: 1.0e-6
Accepted: [1e-9; 1e-3]
Example: mosek -d MSK_DPAR_MIO_TOL_FEAS 1.0e-6 file
Groups: Mixed-integer optimization

MSK_DPAR_MIO_TOL_REL_DUAL_BOUND_IMPROVEMENT¶

If the relative improvement of the dual bound is smaller than this value, the solver will terminate the root cut generation. A value of 0.0 means that the value is selected automatically.

Default: 0.0
Accepted: [0.0; 1.0]
Example: mosek -d MSK_DPAR_MIO_TOL_REL_DUAL_BOUND_IMPROVEMENT 0.0 file
Groups: Mixed-integer optimization

MSK_DPAR_MIO_TOL_REL_GAP¶

Relative optimality tolerance employed by the mixed-integer optimizer.

Default: 1.0e-4
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_MIO_TOL_REL_GAP 1.0e-4 file
Groups: Mixed-integer optimization, Termination criteria

MSK_DPAR_OPTIMIZER_MAX_TICKS¶

CURRENTLY NOT IN USE.

Maximum amount of ticks the optimizer is allowed to spent on the optimization. A negative number means infinity.

Default: -1.0
Accepted: [-inf; +inf]
Example: mosek -d MSK_DPAR_OPTIMIZER_MAX_TICKS -1.0 file
Groups: Termination criteria

MSK_DPAR_OPTIMIZER_MAX_TIME¶

Maximum amount of time the optimizer is allowed to spent on the optimization. A negative number means infinity.

Default: -1.0
Accepted: [-inf; +inf]
Example: mosek -d MSK_DPAR_OPTIMIZER_MAX_TIME -1.0 file
Groups: Termination criteria

MSK_DPAR_PRESOLVE_TOL_ABS_LINDEP¶

Absolute tolerance employed by the linear dependency checker.

Default: 1.0e-6
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_PRESOLVE_TOL_ABS_LINDEP 1.0e-6 file
Groups: Presolve

MSK_DPAR_PRESOLVE_TOL_AIJ¶

Absolute zero tolerance employed for \(a_{ij}\) in the presolve.

Default: 1.0e-12
Accepted: [1.0e-15; +inf]
Example: mosek -d MSK_DPAR_PRESOLVE_TOL_AIJ 1.0e-12 file
Groups: Presolve

MSK_DPAR_PRESOLVE_TOL_PRIMAL_INFEAS_PERTURBATION¶

The presolve is allowed to perturb a bound on a constraint or variable by this amount if it removes an infeasibility.

Default: 1.0e-6
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_PRESOLVE_TOL_PRIMAL_INFEAS_PERTURBATION 1.0e-6 file
Groups: Presolve

MSK_DPAR_PRESOLVE_TOL_REL_LINDEP¶

Relative tolerance employed by the linear dependency checker.

Default: 1.0e-10
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_PRESOLVE_TOL_REL_LINDEP 1.0e-10 file
Groups: Presolve

MSK_DPAR_PRESOLVE_TOL_S¶

Absolute zero tolerance employed for \(s_i\) in the presolve.

Default: 1.0e-8
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_PRESOLVE_TOL_S 1.0e-8 file
Groups: Presolve

MSK_DPAR_PRESOLVE_TOL_X¶

Absolute zero tolerance employed for \(x_j\) in the presolve.

Default: 1.0e-8
Accepted: [0.0; +inf]
Example: mosek -d MSK_DPAR_PRESOLVE_TOL_X 1.0e-8 file
Groups: Presolve

MSK_DPAR_QCQO_REFORMULATE_REL_DROP_TOL¶

This parameter determines when columns are dropped in incomplete Cholesky factorization during reformulation of quadratic problems.

Default: 1e-15
Accepted: [0; +inf]
Example: mosek -d MSK_DPAR_QCQO_REFORMULATE_REL_DROP_TOL 1e-15 file
Groups: Interior-point method

MSK_DPAR_SEMIDEFINITE_TOL_APPROX¶

Tolerance to define a matrix to be positive semidefinite.

Default: 1.0e-10
Accepted: [1.0e-15; +inf]
Example: mosek -d MSK_DPAR_SEMIDEFINITE_TOL_APPROX 1.0e-10 file
Groups: Data check

MSK_DPAR_SIM_LU_TOL_REL_PIV¶

Relative pivot tolerance employed when computing the LU factorization of the basis in the simplex optimizers and in the basis identification procedure. A value closer to 1.0 generally improves numerical stability but typically also implies an increase in the computational work.

Default: 0.01
Accepted: [1.0e-6; 0.999999]
Example: mosek -d MSK_DPAR_SIM_LU_TOL_REL_PIV 0.01 file
Groups: Basis identification, Simplex optimizer

MSK_DPAR_SIMPLEX_ABS_TOL_PIV¶

Absolute pivot tolerance employed by the simplex optimizers.

Default: 1.0e-7
Accepted: [1.0e-12; +inf]
Example: mosek -d MSK_DPAR_SIMPLEX_ABS_TOL_PIV 1.0e-7 file
Groups: Simplex optimizer

MSK_DPAR_UPPER_OBJ_CUT¶

If either a primal or dual feasible solution is found proving that the optimal objective value is outside the interval \([\) MSK_DPAR_LOWER_OBJ_CUT, MSK_DPAR_UPPER_OBJ_CUT \(]\), then MOSEK is terminated.

Default: 1.0e30
Accepted: [-inf; +inf]
Example: mosek -d MSK_DPAR_UPPER_OBJ_CUT 1.0e30 file
See also: MSK_DPAR_UPPER_OBJ_CUT_FINITE_TRH
Groups: Termination criteria

MSK_DPAR_UPPER_OBJ_CUT_FINITE_TRH¶

If the upper objective cut is greater than the value of this parameter, then the upper objective cut MSK_DPAR_UPPER_OBJ_CUT is treated as \(\infty\).

Default: 0.5e30
Accepted: [-inf; +inf]
Example: mosek -d MSK_DPAR_UPPER_OBJ_CUT_FINITE_TRH 0.5e30 file
Groups: Termination criteria

10.2.2 Integer parameters¶

MSK_IPAR_ANA_SOL_BASIS¶

Controls whether the basis matrix is analyzed in solution analyzer.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_ANA_SOL_BASIS MSK_ON file
Groups: Analysis

MSK_IPAR_ANA_SOL_PRINT_VIOLATED¶

A parameter of the problem analyzer. Controls whether a list of violated constraints is printed. All constraints violated by more than the value set by the parameter MSK_DPAR_ANA_SOL_INFEAS_TOL will be printed.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_ANA_SOL_PRINT_VIOLATED MSK_OFF file
Groups: Analysis

MSK_IPAR_AUTO_SORT_A_BEFORE_OPT¶

Controls whether the elements in each column of \(A\) are sorted before an optimization is performed. This is not required but makes the optimization more deterministic.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_AUTO_SORT_A_BEFORE_OPT MSK_OFF file
Groups: Debugging

MSK_IPAR_AUTO_UPDATE_SOL_INFO¶

Controls whether the solution information items are automatically updated after an optimization is performed.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_AUTO_UPDATE_SOL_INFO MSK_OFF file
Groups: Overall system

MSK_IPAR_BASIS_SOLVE_USE_PLUS_ONE¶

If a slack variable is in the basis, then the corresponding column in the basis is a unit vector with -1 in the right position. However, if this parameter is set to MSK_ON, -1 is replaced by 1.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_BASIS_SOLVE_USE_PLUS_ONE MSK_OFF file
Groups: Simplex optimizer

MSK_IPAR_BI_CLEAN_OPTIMIZER¶

Controls which simplex optimizer is used in the clean-up phase. Anything else than MSK_OPTIMIZER_PRIMAL_SIMPLEX or MSK_OPTIMIZER_DUAL_SIMPLEX is equivalent to MSK_OPTIMIZER_FREE_SIMPLEX.

Default: FREE
Accepted: FREE, INTPNT, CONIC, PRIMAL_SIMPLEX, DUAL_SIMPLEX, FREE_SIMPLEX, MIXED_INT
Example: mosek -d MSK_IPAR_BI_CLEAN_OPTIMIZER MSK_OPTIMIZER_FREE file
Groups: Basis identification, Overall solver

MSK_IPAR_BI_IGNORE_MAX_ITER¶

If the parameter MSK_IPAR_INTPNT_BASIS has the value MSK_BI_NO_ERROR and the interior-point optimizer has terminated due to maximum number of iterations, then basis identification is performed if this parameter has the value MSK_ON.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_BI_IGNORE_MAX_ITER MSK_OFF file
Groups: Interior-point method, Basis identification

MSK_IPAR_BI_IGNORE_NUM_ERROR¶

If the parameter MSK_IPAR_INTPNT_BASIS has the value MSK_BI_NO_ERROR and the interior-point optimizer has terminated due to a numerical problem, then basis identification is performed if this parameter has the value MSK_ON.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_BI_IGNORE_NUM_ERROR MSK_OFF file
Groups: Interior-point method, Basis identification

MSK_IPAR_BI_MAX_ITERATIONS¶

Controls the maximum number of simplex iterations allowed to optimize a basis after the basis identification.

Default: 1000000
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_BI_MAX_ITERATIONS 1000000 file
Groups: Basis identification, Termination criteria

MSK_IPAR_CACHE_LICENSE¶

Specifies if the license is kept checked out for the lifetime of the MOSEK environment/model/process (MSK_ON) or returned to the server immediately after the optimization (MSK_OFF).

Check-in and check-out of licenses have an overhead. Frequent communication with the license server should be avoided.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_CACHE_LICENSE MSK_ON file
Groups: License manager

MSK_IPAR_COMPRESS_STATFILE¶

Control compression of stat files.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_COMPRESS_STATFILE MSK_ON file

MSK_IPAR_INFEAS_GENERIC_NAMES¶

Controls whether generic names are used when an infeasible subproblem is created.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_INFEAS_GENERIC_NAMES MSK_OFF file
Groups: Infeasibility report

MSK_IPAR_INFEAS_PREFER_PRIMAL¶

If both certificates of primal and dual infeasibility are supplied then only the primal is used when this option is turned on.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_INFEAS_PREFER_PRIMAL MSK_ON file
Groups: Overall solver

MSK_IPAR_INFEAS_REPORT_AUTO¶

Controls whether an infeasibility report is automatically produced after the optimization if the problem is primal or dual infeasible.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_INFEAS_REPORT_AUTO MSK_OFF file
Groups: Data input/output, Solution input/output

MSK_IPAR_INFEAS_REPORT_LEVEL¶

Controls the amount of information presented in an infeasibility report. Higher values imply more information.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_INFEAS_REPORT_LEVEL 1 file
Groups: Infeasibility report, Output information

MSK_IPAR_INTPNT_BASIS¶

Controls whether the interior-point optimizer also computes an optimal basis.

Default: ALWAYS
Accepted: NEVER, ALWAYS, NO_ERROR, IF_FEASIBLE, RESERVERED
Example: mosek -d MSK_IPAR_INTPNT_BASIS MSK_BI_ALWAYS file
See also: MSK_IPAR_BI_IGNORE_MAX_ITER, MSK_IPAR_BI_IGNORE_NUM_ERROR, MSK_IPAR_BI_MAX_ITERATIONS, MSK_IPAR_BI_CLEAN_OPTIMIZER
Groups: Interior-point method, Basis identification

MSK_IPAR_INTPNT_DIFF_STEP¶

Controls whether different step sizes are allowed in the primal and dual space.

Default

ON

Accepted

ON: Different step sizes are allowed.
OFF: Different step sizes are not allowed.

Example

mosek -d MSK_IPAR_INTPNT_DIFF_STEP MSK_ON file

Groups

Interior-point method

MSK_IPAR_INTPNT_HOTSTART¶

Currently not in use.

Default: NONE
Accepted: NONE, PRIMAL, DUAL, PRIMAL_DUAL
Example: mosek -d MSK_IPAR_INTPNT_HOTSTART MSK_INTPNT_HOTSTART_NONE file
Groups: Interior-point method

MSK_IPAR_INTPNT_MAX_ITERATIONS¶

Controls the maximum number of iterations allowed in the interior-point optimizer.

Default: 400
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_INTPNT_MAX_ITERATIONS 400 file
Groups: Interior-point method, Termination criteria

MSK_IPAR_INTPNT_MAX_NUM_COR¶

Controls the maximum number of correctors allowed by the multiple corrector procedure. A negative value means that MOSEK is making the choice.

Default: -1
Accepted: [-1; +inf]
Example: mosek -d MSK_IPAR_INTPNT_MAX_NUM_COR -1 file
Groups: Interior-point method

MSK_IPAR_INTPNT_MAX_NUM_REFINEMENT_STEPS¶

Maximum number of steps to be used by the iterative refinement of the search direction. A negative value implies that the optimizer chooses the maximum number of iterative refinement steps.

Default: -1
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_INTPNT_MAX_NUM_REFINEMENT_STEPS -1 file
Groups: Interior-point method

MSK_IPAR_INTPNT_OFF_COL_TRH¶

Controls how many offending columns are detected in the Jacobian of the constraint matrix.

\(0\)	no detection
\(1\)	aggressive detection
\(>1\)	higher values mean less aggressive detection

Default: 40
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_INTPNT_OFF_COL_TRH 40 file
Groups: Interior-point method

MSK_IPAR_INTPNT_ORDER_GP_NUM_SEEDS¶

The GP ordering is dependent on a random seed. Therefore, trying several random seeds may lead to a better ordering. This parameter controls the number of random seeds tried.

A value of 0 means that MOSEK makes the choice.

Default: 0
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_INTPNT_ORDER_GP_NUM_SEEDS 0 file
Groups: Interior-point method

MSK_IPAR_INTPNT_ORDER_METHOD¶

Controls the ordering strategy used by the interior-point optimizer when factorizing the Newton equation system.

Default: FREE
Accepted: FREE, APPMINLOC, EXPERIMENTAL, TRY_GRAPHPAR, FORCE_GRAPHPAR, NONE
Example: mosek -d MSK_IPAR_INTPNT_ORDER_METHOD MSK_ORDER_METHOD_FREE file
Groups: Interior-point method

MSK_IPAR_INTPNT_PURIFY¶

Currently not in use.

Default: NONE
Accepted: NONE, PRIMAL, DUAL, PRIMAL_DUAL, AUTO
Example: mosek -d MSK_IPAR_INTPNT_PURIFY MSK_PURIFY_NONE file
Groups: Interior-point method

MSK_IPAR_INTPNT_REGULARIZATION_USE¶

Controls whether regularization is allowed.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_INTPNT_REGULARIZATION_USE MSK_ON file
Groups: Interior-point method

MSK_IPAR_INTPNT_SCALING¶

Controls how the problem is scaled before the interior-point optimizer is used.

Default: FREE
Accepted: FREE, NONE
Example: mosek -d MSK_IPAR_INTPNT_SCALING MSK_SCALING_FREE file
Groups: Interior-point method

MSK_IPAR_INTPNT_SOLVE_FORM¶

Controls whether the primal or the dual problem is solved.

Default: FREE
Accepted: FREE, PRIMAL, DUAL
Example: mosek -d MSK_IPAR_INTPNT_SOLVE_FORM MSK_SOLVE_FREE file
Groups: Interior-point method

MSK_IPAR_INTPNT_STARTING_POINT¶

Starting point used by the interior-point optimizer.

Default: FREE
Accepted: FREE, GUESS, CONSTANT
Example: mosek -d MSK_IPAR_INTPNT_STARTING_POINT MSK_STARTING_POINT_FREE file
Groups: Interior-point method

MSK_IPAR_LICENSE_DEBUG¶

This option is used to turn on debugging of the license manager.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_LICENSE_DEBUG MSK_OFF file
Groups: License manager

MSK_IPAR_LICENSE_PAUSE_TIME¶

If MSK_IPAR_LICENSE_WAIT is MSK_ON and no license is available, then MOSEK sleeps a number of milliseconds between each check of whether a license has become free.

Default: 100
Accepted: [0; 1000000]
Example: mosek -d MSK_IPAR_LICENSE_PAUSE_TIME 100 file
Groups: License manager

MSK_IPAR_LICENSE_SUPPRESS_EXPIRE_WRNS¶

Controls whether license features expire warnings are suppressed.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_LICENSE_SUPPRESS_EXPIRE_WRNS MSK_OFF file
Groups: License manager, Output information

MSK_IPAR_LICENSE_TRH_EXPIRY_WRN¶

If a license feature expires in a numbers of days less than the value of this parameter then a warning will be issued.

Default: 7
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LICENSE_TRH_EXPIRY_WRN 7 file
Groups: License manager, Output information

MSK_IPAR_LICENSE_WAIT¶

If all licenses are in use MOSEK returns with an error code. However, by turning on this parameter MOSEK will wait for an available license.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_LICENSE_WAIT MSK_OFF file
Groups: Overall solver, Overall system, License manager

MSK_IPAR_LOG¶

Controls the amount of log information. The value 0 implies that all log information is suppressed. A higher level implies that more information is logged.

Please note that if a task is employed to solve a sequence of optimization problems the value of this parameter is reduced by the value of MSK_IPAR_LOG_CUT_SECOND_OPT for the second and any subsequent optimizations.

Default: 10
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG 10 file
See also: MSK_IPAR_LOG_CUT_SECOND_OPT
Groups: Output information, Logging

MSK_IPAR_LOG_ANA_PRO¶

Controls amount of output from the problem analyzer.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_ANA_PRO 1 file
Groups: Analysis, Logging

MSK_IPAR_LOG_BI¶

Controls the amount of output printed by the basis identification procedure. A higher level implies that more information is logged.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_BI 1 file
Groups: Basis identification, Output information, Logging

MSK_IPAR_LOG_BI_FREQ¶

Controls how frequently the optimizer outputs information about the basis identification and how frequent the user-defined callback function is called.

Default: 2500
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_BI_FREQ 2500 file
Groups: Basis identification, Output information, Logging

MSK_IPAR_LOG_CUT_SECOND_OPT¶

If a task is employed to solve a sequence of optimization problems, then the value of the log levels is reduced by the value of this parameter. E.g MSK_IPAR_LOG and MSK_IPAR_LOG_SIM are reduced by the value of this parameter for the second and any subsequent optimizations.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_CUT_SECOND_OPT 1 file
See also: MSK_IPAR_LOG, MSK_IPAR_LOG_INTPNT, MSK_IPAR_LOG_MIO, MSK_IPAR_LOG_SIM
Groups: Output information, Logging

MSK_IPAR_LOG_EXPAND¶

Controls the amount of logging when a data item such as the maximum number constrains is expanded.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_EXPAND 1 file
Groups: Output information, Logging

MSK_IPAR_LOG_FEAS_REPAIR¶

Controls the amount of output printed when performing feasibility repair. A value higher than one means extensive logging.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_FEAS_REPAIR 1 file
Groups: Output information, Logging

MSK_IPAR_LOG_FILE¶

If turned on, then some log info is printed when a file is written or read.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_FILE 1 file
Groups: Data input/output, Output information, Logging

MSK_IPAR_LOG_INCLUDE_SUMMARY¶

Not relevant for this API.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_LOG_INCLUDE_SUMMARY MSK_OFF file
Groups: Output information, Logging

MSK_IPAR_LOG_INFEAS_ANA¶

Controls amount of output printed by the infeasibility analyzer procedures. A higher level implies that more information is logged.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_INFEAS_ANA 1 file
Groups: Infeasibility report, Output information, Logging

MSK_IPAR_LOG_INTPNT¶

Controls amount of output printed by the interior-point optimizer. A higher level implies that more information is logged.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_INTPNT 1 file
Groups: Interior-point method, Output information, Logging

MSK_IPAR_LOG_LOCAL_INFO¶

Controls whether local identifying information like environment variables, filenames, IP addresses etc. are printed to the log.

Note that this will only affect some functions. Some functions that specifically emit system information will not be affected.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_LOG_LOCAL_INFO MSK_ON file
Groups: Output information, Logging

MSK_IPAR_LOG_MIO¶

Controls the log level for the mixed-integer optimizer. A higher level implies that more information is logged.

Default: 4
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_MIO 4 file
Groups: Mixed-integer optimization, Output information, Logging

MSK_IPAR_LOG_MIO_FREQ¶

Controls how frequent the mixed-integer optimizer prints the log line. It will print line every time MSK_IPAR_LOG_MIO_FREQ relaxations have been solved.

Default: 10
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_LOG_MIO_FREQ 10 file
Groups: Mixed-integer optimization, Output information, Logging

MSK_IPAR_LOG_ORDER¶

If turned on, then factor lines are added to the log.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_ORDER 1 file
Groups: Output information, Logging

MSK_IPAR_LOG_PRESOLVE¶

Controls amount of output printed by the presolve procedure. A higher level implies that more information is logged.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_PRESOLVE 1 file
Groups: Logging

MSK_IPAR_LOG_RESPONSE¶

Controls amount of output printed when response codes are reported. A higher level implies that more information is logged.

Default: 0
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_RESPONSE 0 file
Groups: Output information, Logging

MSK_IPAR_LOG_SENSITIVITY¶

Controls the amount of logging during the sensitivity analysis.

\(0\). Means no logging information is produced.
\(1\). Timing information is printed.
\(2\). Sensitivity results are printed.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_SENSITIVITY 1 file
Groups: Output information, Logging

MSK_IPAR_LOG_SENSITIVITY_OPT¶

Controls the amount of logging from the optimizers employed during the sensitivity analysis. 0 means no logging information is produced.

Default: 0
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_SENSITIVITY_OPT 0 file
Groups: Output information, Logging

MSK_IPAR_LOG_SIM¶

Controls amount of output printed by the simplex optimizer. A higher level implies that more information is logged.

Default: 4
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_SIM 4 file
Groups: Simplex optimizer, Output information, Logging

MSK_IPAR_LOG_SIM_FREQ¶

Controls how frequent the simplex optimizer outputs information about the optimization and how frequent the user-defined callback function is called.

Default: 1000
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_SIM_FREQ 1000 file
Groups: Simplex optimizer, Output information, Logging

MSK_IPAR_LOG_SIM_MINOR¶

Currently not in use.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_SIM_MINOR 1 file
Groups: Simplex optimizer, Output information

MSK_IPAR_LOG_STORAGE¶

When turned on, MOSEK prints messages regarding the storage usage and allocation.

Default: 0
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_LOG_STORAGE 0 file
Groups: Output information, Overall system, Logging

MSK_IPAR_MAX_NUM_WARNINGS¶

Each warning is shown a limited number of times controlled by this parameter. A negative value is identical to infinite number of times.

Default: 10
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_MAX_NUM_WARNINGS 10 file
Groups: Output information

MSK_IPAR_MIO_BRANCH_DIR¶

Controls whether the mixed-integer optimizer is branching up or down by default.

Default: FREE
Accepted: FREE, UP, DOWN, NEAR, FAR, ROOT_LP, GUIDED, PSEUDOCOST
Example: mosek -d MSK_IPAR_MIO_BRANCH_DIR MSK_BRANCH_DIR_FREE file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_CONIC_OUTER_APPROXIMATION¶

If this option is turned on outer approximation is used when solving relaxations of conic problems; otherwise interior point is used.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_MIO_CONIC_OUTER_APPROXIMATION MSK_OFF file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_CONSTRUCT_SOL¶

If set to MSK_ON and all integer variables have been given a value for which a feasible mixed integer solution exists, then MOSEK generates an initial solution to the mixed integer problem by fixing all integer values and solving the remaining problem.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_MIO_CONSTRUCT_SOL MSK_OFF file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_CUT_CLIQUE¶

Controls whether clique cuts should be generated.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_MIO_CUT_CLIQUE MSK_ON file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_CUT_CMIR¶

Controls whether mixed integer rounding cuts should be generated.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_MIO_CUT_CMIR MSK_ON file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_CUT_GMI¶

Controls whether GMI cuts should be generated.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_MIO_CUT_GMI MSK_ON file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_CUT_IMPLIED_BOUND¶

Controls whether implied bound cuts should be generated.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_MIO_CUT_IMPLIED_BOUND MSK_ON file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_CUT_KNAPSACK_COVER¶

Controls whether knapsack cover cuts should be generated.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_MIO_CUT_KNAPSACK_COVER MSK_ON file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_CUT_LIPRO¶

Controls whether lift-and-project cuts should be generated.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_MIO_CUT_LIPRO MSK_OFF file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_CUT_SELECTION_LEVEL¶

Controls how aggressively generated cuts are selected to be included in the relaxation.

\(-1\). The optimizer chooses the level of cut selection
\(0\). Generated cuts less likely to be added to the relaxation
\(1\). Cuts are more aggressively selected to be included in the relaxation

Default: -1
Accepted: [-1; +1]
Example: mosek -d MSK_IPAR_MIO_CUT_SELECTION_LEVEL -1 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_DATA_PERMUTATION_METHOD¶

Controls what problem data permutation method is appplied to mixed-integer problems.

Default: NONE
Accepted: NONE, CYCLIC_SHIFT, RANDOM
Example: mosek -d MSK_IPAR_MIO_DATA_PERMUTATION_METHOD MSK_MIO_DATA_PERMUTATION_METHOD_NONE file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_DUAL_RAY_ANALYSIS_LEVEL¶

Controls the amount of symmetry detection and handling employed by the mixed-integer optimizer in presolve.

\(-1\). The optimizer chooses the level of dual ray analysis employed
\(0\). Dual ray analysis is disabled
\(1\). A lower amount of dual ray analysis is employed
\(2\). A higher amount of dual ray analysis is employed

Default: -1
Accepted: [-1; 2]
Example: mosek -d MSK_IPAR_MIO_DUAL_RAY_ANALYSIS_LEVEL -1 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_FEASPUMP_LEVEL¶

Controls the way the Feasibility Pump heuristic is employed by the mixed-integer optimizer.

\(-1\). The optimizer chooses how the Feasibility Pump is used
\(0\). The Feasibility Pump is disabled
\(1\). The Feasibility Pump is enabled with an effort to improve solution quality
\(2\). The Feasibility Pump is enabled with an effort to reach feasibility early

Default: -1
Accepted: [-1; 2]
Example: mosek -d MSK_IPAR_MIO_FEASPUMP_LEVEL -1 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_HEURISTIC_LEVEL¶

Controls the heuristic employed by the mixed-integer optimizer to locate an initial good integer feasible solution. A value of zero means the heuristic is not used at all. A larger value than \(0\) means that a gradually more sophisticated heuristic is used which is computationally more expensive. A negative value implies that the optimizer chooses the heuristic. Normally a value around \(3\) to \(5\) should be optimal.

Default: -1
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_MIO_HEURISTIC_LEVEL -1 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_MAX_NUM_BRANCHES¶

Maximum number of branches allowed during the branch and bound search. A negative value means infinite.

Default: -1
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_MIO_MAX_NUM_BRANCHES -1 file
Groups: Mixed-integer optimization, Termination criteria

MSK_IPAR_MIO_MAX_NUM_RELAXS¶

Maximum number of relaxations allowed during the branch and bound search. A negative value means infinite.

Default: -1
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_MIO_MAX_NUM_RELAXS -1 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_MAX_NUM_RESTARTS¶

Maximum number of restarts allowed during the branch and bound search.

Default: 0
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_MIO_MAX_NUM_RESTARTS 0 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_MAX_NUM_ROOT_CUT_ROUNDS¶

Maximum number of cut separation rounds at the root node.

Default: 100
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_MIO_MAX_NUM_ROOT_CUT_ROUNDS 100 file
Groups: Mixed-integer optimization, Termination criteria

MSK_IPAR_MIO_MAX_NUM_SOLUTIONS¶

The mixed-integer optimizer can be terminated after a certain number of different feasible solutions has been located. If this parameter has the value \(n>0\), then the mixed-integer optimizer will be terminated when \(n\) feasible solutions have been located.

Default: -1
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_MIO_MAX_NUM_SOLUTIONS -1 file
Groups: Mixed-integer optimization, Termination criteria

MSK_IPAR_MIO_MEMORY_EMPHASIS_LEVEL¶

Controls how much emphasis is put on reducing memory usage. Being more conservative about memory usage may come at the cost of decreased solution speed.

\(0\). The optimizer chooses
\(1\). More emphasis is put on reducing memory usage and less on speed

Default: 0
Accepted: [0; +1]
Example: mosek -d MSK_IPAR_MIO_MEMORY_EMPHASIS_LEVEL 0 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_MIN_REL¶

Number of times a variable must have been branched on for its pseudocost to be considered reliable.

Default: 5
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_MIO_MIN_REL 5 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_MODE¶

Controls whether the optimizer includes the integer restrictions and disjunctive constraints when solving a (mixed) integer optimization problem.

Default: SATISFIED
Accepted: IGNORED, SATISFIED
Example: mosek -d MSK_IPAR_MIO_MODE MSK_MIO_MODE_SATISFIED file
Groups: Overall solver

MSK_IPAR_MIO_NODE_OPTIMIZER¶

Controls which optimizer is employed at the non-root nodes in the mixed-integer optimizer.

Default: FREE
Accepted: FREE, INTPNT, CONIC, PRIMAL_SIMPLEX, DUAL_SIMPLEX, FREE_SIMPLEX, MIXED_INT
Example: mosek -d MSK_IPAR_MIO_NODE_OPTIMIZER MSK_OPTIMIZER_FREE file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_NODE_SELECTION¶

Controls the node selection strategy employed by the mixed-integer optimizer.

Default: FREE
Accepted: FREE, FIRST, BEST, PSEUDO
Example: mosek -d MSK_IPAR_MIO_NODE_SELECTION MSK_MIO_NODE_SELECTION_FREE file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_NUMERICAL_EMPHASIS_LEVEL¶

Controls how much emphasis is put on reducing numerical problems possibly at the expense of solution speed.

\(0\). The optimizer chooses
\(1\). More emphasis is put on reducing numerical problems
\(2\). Even more emphasis

Default: 0
Accepted: [0; +2]
Example: mosek -d MSK_IPAR_MIO_NUMERICAL_EMPHASIS_LEVEL 0 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_PERSPECTIVE_REFORMULATE¶

Enables or disables perspective reformulation in presolve.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_MIO_PERSPECTIVE_REFORMULATE MSK_ON file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_PRESOLVE_AGGREGATOR_USE¶

Controls if the aggregator should be used.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_MIO_PRESOLVE_AGGREGATOR_USE MSK_ON file
Groups: Presolve

MSK_IPAR_MIO_PROBING_LEVEL¶

Controls the amount of probing employed by the mixed-integer optimizer in presolve.

\(-1\). The optimizer chooses the level of probing employed
\(0\). Probing is disabled
\(1\). A low amount of probing is employed
\(2\). A medium amount of probing is employed
\(3\). A high amount of probing is employed

Default: -1
Accepted: [-1; 3]
Example: mosek -d MSK_IPAR_MIO_PROBING_LEVEL -1 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_PROPAGATE_OBJECTIVE_CONSTRAINT¶

Use objective domain propagation.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_MIO_PROPAGATE_OBJECTIVE_CONSTRAINT MSK_OFF file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_QCQO_REFORMULATION_METHOD¶

Controls what reformulation method is applied to mixed-integer quadratic problems.

Default: FREE
Accepted: FREE, NONE, LINEARIZATION, EIGEN_VAL_METHOD, DIAG_SDP, RELAX_SDP
Example: mosek -d MSK_IPAR_MIO_QCQO_REFORMULATION_METHOD MSK_MIO_QCQO_REFORMULATION_METHOD_FREE file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_RINS_MAX_NODES¶

Controls the maximum number of nodes allowed in each call to the RINS heuristic. The default value of -1 means that the value is determined automatically. A value of zero turns off the heuristic.

Default: -1
Accepted: [-1; +inf]
Example: mosek -d MSK_IPAR_MIO_RINS_MAX_NODES -1 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_ROOT_OPTIMIZER¶

Controls which optimizer is employed at the root node in the mixed-integer optimizer.

Default: FREE
Accepted: FREE, INTPNT, CONIC, PRIMAL_SIMPLEX, DUAL_SIMPLEX, FREE_SIMPLEX, MIXED_INT
Example: mosek -d MSK_IPAR_MIO_ROOT_OPTIMIZER MSK_OPTIMIZER_FREE file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_ROOT_REPEAT_PRESOLVE_LEVEL¶

Controls whether presolve can be repeated at root node.

\(-1\). The optimizer chooses whether presolve is repeated
\(0\). Never repeat presolve
\(1\). Always repeat presolve

Default: -1
Accepted: [-1; 1]
Example: mosek -d MSK_IPAR_MIO_ROOT_REPEAT_PRESOLVE_LEVEL -1 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_SEED¶

Sets the random seed used for randomization in the mixed integer optimizer. Selecting a different seed can change the path the optimizer takes to the optimal solution.

Default: 42
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_MIO_SEED 42 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_SYMMETRY_LEVEL¶

Controls the amount of symmetry detection and handling employed by the mixed-integer optimizer in presolve.

\(-1\). The optimizer chooses the level of symmetry detection and handling employed
\(0\). Symmetry detection and handling is disabled
\(1\). A low amount of symmetry detection and handling is employed
\(2\). A medium amount of symmetry detection and handling is employed
\(3\). A high amount of symmetry detection and handling is employed
\(4\). An extremely high amount of symmetry detection and handling is employed

Default: -1
Accepted: [-1; 4]
Example: mosek -d MSK_IPAR_MIO_SYMMETRY_LEVEL -1 file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_VAR_SELECTION¶

Controls the variable selection strategy employed by the mixed-integer optimizer.

Default: FREE
Accepted: FREE, PSEUDOCOST, STRONG
Example: mosek -d MSK_IPAR_MIO_VAR_SELECTION MSK_MIO_VAR_SELECTION_FREE file
Groups: Mixed-integer optimization

MSK_IPAR_MIO_VB_DETECTION_LEVEL¶

Controls how much effort is put into detecting variable bounds.

\(-1\). The optimizer chooses
\(0\). No variable bounds are detected
\(1\). Only detect variable bounds that are directly represented in the problem
\(2\). Detect variable bounds in probing

Default: -1
Accepted: [-1; +2]
Example: mosek -d MSK_IPAR_MIO_VB_DETECTION_LEVEL -1 file
Groups: Mixed-integer optimization

MSK_IPAR_MT_SPINCOUNT¶

Set the number of iterations to spin before sleeping.

Default: 0
Accepted: [0; 1000000000]
Example: mosek -d MSK_IPAR_MT_SPINCOUNT 0 file
Groups: Overall system

MSK_IPAR_NG¶

Not in use.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_NG MSK_OFF file

MSK_IPAR_NUM_THREADS¶

Controls the number of threads employed by the optimizer. If set to 0 the number of threads used will be equal to the number of cores detected on the machine.

Default: 0
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_NUM_THREADS 0 file
Groups: Overall system

MSK_IPAR_OPF_WRITE_HEADER¶

Write a text header with date and MOSEK version in an OPF file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_OPF_WRITE_HEADER MSK_ON file
Groups: Data input/output

MSK_IPAR_OPF_WRITE_HINTS¶

Write a hint section with problem dimensions in the beginning of an OPF file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_OPF_WRITE_HINTS MSK_ON file
Groups: Data input/output

MSK_IPAR_OPF_WRITE_LINE_LENGTH¶

Aim to keep lines in OPF files not much longer than this.

Default: 80
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_OPF_WRITE_LINE_LENGTH 80 file
Groups: Data input/output

MSK_IPAR_OPF_WRITE_PARAMETERS¶

Write a parameter section in an OPF file.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_OPF_WRITE_PARAMETERS MSK_OFF file
Groups: Data input/output

MSK_IPAR_OPF_WRITE_PROBLEM¶

Write objective, constraints, bounds etc. to an OPF file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_OPF_WRITE_PROBLEM MSK_ON file
Groups: Data input/output

MSK_IPAR_OPF_WRITE_SOL_BAS¶

If MSK_IPAR_OPF_WRITE_SOLUTIONS is MSK_ON and a basic solution is defined, include the basic solution in OPF files.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_OPF_WRITE_SOL_BAS MSK_ON file
Groups: Data input/output

MSK_IPAR_OPF_WRITE_SOL_ITG¶

If MSK_IPAR_OPF_WRITE_SOLUTIONS is MSK_ON and an integer solution is defined, write the integer solution in OPF files.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_OPF_WRITE_SOL_ITG MSK_ON file
Groups: Data input/output

MSK_IPAR_OPF_WRITE_SOL_ITR¶

If MSK_IPAR_OPF_WRITE_SOLUTIONS is MSK_ON and an interior solution is defined, write the interior solution in OPF files.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_OPF_WRITE_SOL_ITR MSK_ON file
Groups: Data input/output

MSK_IPAR_OPF_WRITE_SOLUTIONS¶

Enable inclusion of solutions in the OPF files.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_OPF_WRITE_SOLUTIONS MSK_OFF file
Groups: Data input/output

MSK_IPAR_OPTIMIZER¶

The parameter controls which optimizer is used to optimize the task.

Default: FREE
Accepted: FREE, INTPNT, CONIC, PRIMAL_SIMPLEX, DUAL_SIMPLEX, FREE_SIMPLEX, MIXED_INT
Example: mosek -d MSK_IPAR_OPTIMIZER MSK_OPTIMIZER_FREE file
Groups: Overall solver

MSK_IPAR_PARAM_READ_CASE_NAME¶

If turned on, then names in the parameter file are case sensitive.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_PARAM_READ_CASE_NAME MSK_ON file
Groups: Data input/output

MSK_IPAR_PARAM_READ_IGN_ERROR¶

If turned on, then errors in parameter settings is ignored.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_PARAM_READ_IGN_ERROR MSK_OFF file
Groups: Data input/output

MSK_IPAR_PRESOLVE_ELIMINATOR_MAX_FILL¶

Controls the maximum amount of fill-in that can be created by one pivot in the elimination phase of the presolve. A negative value means the parameter value is selected automatically.

Default: -1
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_PRESOLVE_ELIMINATOR_MAX_FILL -1 file
Groups: Presolve

MSK_IPAR_PRESOLVE_ELIMINATOR_MAX_NUM_TRIES¶

Control the maximum number of times the eliminator is tried. A negative value implies MOSEK decides.

Default: -1
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_PRESOLVE_ELIMINATOR_MAX_NUM_TRIES -1 file
Groups: Presolve

MSK_IPAR_PRESOLVE_LEVEL¶

Currently not used.

Default: -1
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_PRESOLVE_LEVEL -1 file
Groups: Overall solver, Presolve

MSK_IPAR_PRESOLVE_LINDEP_ABS_WORK_TRH¶

Controls linear dependency check in presolve. The linear dependency check is potentially computationally expensive.

Default: 100
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_PRESOLVE_LINDEP_ABS_WORK_TRH 100 file
Groups: Presolve

MSK_IPAR_PRESOLVE_LINDEP_NEW¶

Controls whether whether a new experimental linear dependency checker is employed.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_PRESOLVE_LINDEP_NEW MSK_OFF file
Groups: Presolve

MSK_IPAR_PRESOLVE_LINDEP_REL_WORK_TRH¶

Controls linear dependency check in presolve. The linear dependency check is potentially computationally expensive.

Default: 100
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_PRESOLVE_LINDEP_REL_WORK_TRH 100 file
Groups: Presolve

MSK_IPAR_PRESOLVE_LINDEP_USE¶

Controls whether the linear constraints are checked for linear dependencies.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_PRESOLVE_LINDEP_USE MSK_ON file
Groups: Presolve

MSK_IPAR_PRESOLVE_MAX_NUM_PASS¶

Control the maximum number of times presolve passes over the problem. A negative value implies MOSEK decides.

Default: -1
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_PRESOLVE_MAX_NUM_PASS -1 file
Groups: Presolve

MSK_IPAR_PRESOLVE_MAX_NUM_REDUCTIONS¶

Controls the maximum number of reductions performed by the presolve. The value of the parameter is normally only changed in connection with debugging. A negative value implies that an infinite number of reductions are allowed.

Default: -1
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_PRESOLVE_MAX_NUM_REDUCTIONS -1 file
Groups: Overall solver, Presolve

MSK_IPAR_PRESOLVE_USE¶

Controls whether the presolve is applied to a problem before it is optimized.

Default: FREE
Accepted: OFF, ON, FREE
Example: mosek -d MSK_IPAR_PRESOLVE_USE MSK_PRESOLVE_MODE_FREE file
Groups: Overall solver, Presolve

MSK_IPAR_PRIMAL_REPAIR_OPTIMIZER¶

Controls which optimizer that is used to find the optimal repair.

Default: FREE
Accepted: FREE, INTPNT, CONIC, PRIMAL_SIMPLEX, DUAL_SIMPLEX, FREE_SIMPLEX, MIXED_INT
Example: mosek -d MSK_IPAR_PRIMAL_REPAIR_OPTIMIZER MSK_OPTIMIZER_FREE file
Groups: Overall solver

MSK_IPAR_PTF_WRITE_PARAMETERS¶

If MSK_IPAR_PTF_WRITE_PARAMETERS is MSK_ON, the parameters section is written.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_PTF_WRITE_PARAMETERS MSK_OFF file
Groups: Data input/output

MSK_IPAR_PTF_WRITE_SOLUTIONS¶

If MSK_IPAR_PTF_WRITE_SOLUTIONS is MSK_ON, the solution section is written if any solutions are available, otherwise solution section is not written even if solutions are available.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_PTF_WRITE_SOLUTIONS MSK_OFF file
Groups: Data input/output

MSK_IPAR_PTF_WRITE_TRANSFORM¶

If MSK_IPAR_PTF_WRITE_TRANSFORM is MSK_ON, constraint blocks with identifiable conic slacks are transformed into conic constraints and the slacks are eliminated.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_PTF_WRITE_TRANSFORM MSK_ON file
Groups: Data input/output

MSK_IPAR_READ_DEBUG¶

Turns on additional debugging information when reading files.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_READ_DEBUG MSK_OFF file
Groups: Data input/output

MSK_IPAR_READ_KEEP_FREE_CON¶

Controls whether the free constraints are included in the problem.

Default

OFF

Accepted

ON: The free constraints are kept.
OFF: The free constraints are discarded.

Example

mosek -d MSK_IPAR_READ_KEEP_FREE_CON MSK_OFF file

Groups

Data input/output

MSK_IPAR_READ_MPS_FORMAT¶

Controls how strictly the MPS file reader interprets the MPS format.

Default: FREE
Accepted: STRICT, RELAXED, FREE, CPLEX
Example: mosek -d MSK_IPAR_READ_MPS_FORMAT MSK_MPS_FORMAT_FREE file
Groups: Data input/output

MSK_IPAR_READ_MPS_WIDTH¶

Controls the maximal number of characters allowed in one line of the MPS file.

Default: 1024
Accepted: [80; +inf]
Example: mosek -d MSK_IPAR_READ_MPS_WIDTH 1024 file
Groups: Data input/output

MSK_IPAR_READ_TASK_IGNORE_PARAM¶

Controls whether MOSEK should ignore the parameter setting defined in the task file and use the default parameter setting instead.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_READ_TASK_IGNORE_PARAM MSK_OFF file
Groups: Data input/output

MSK_IPAR_REMOTE_USE_COMPRESSION¶

Use compression when sending data to an optimization server.

Default: ZSTD
Accepted: NONE, FREE, GZIP, ZSTD
Example: mosek -d MSK_IPAR_REMOTE_USE_COMPRESSION MSK_COMPRESS_ZSTD file

MSK_IPAR_REMOVE_UNUSED_SOLUTIONS¶

Removes unused solutions before the optimization is performed.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_REMOVE_UNUSED_SOLUTIONS MSK_OFF file
Groups: Overall system

MSK_IPAR_SENSITIVITY_ALL¶

Not applicable.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_SENSITIVITY_ALL MSK_OFF file
Groups: Overall solver

MSK_IPAR_SENSITIVITY_OPTIMIZER¶

Controls which optimizer is used for optimal partition sensitivity analysis.

Default: FREE_SIMPLEX
Accepted: FREE, INTPNT, CONIC, PRIMAL_SIMPLEX, DUAL_SIMPLEX, FREE_SIMPLEX, MIXED_INT
Example: mosek -d MSK_IPAR_SENSITIVITY_OPTIMIZER MSK_OPTIMIZER_FREE_SIMPLEX file
Groups: Overall solver, Simplex optimizer

MSK_IPAR_SENSITIVITY_TYPE¶

Controls which type of sensitivity analysis is to be performed.

Default: BASIS
Accepted: BASIS
Example: mosek -d MSK_IPAR_SENSITIVITY_TYPE MSK_SENSITIVITY_TYPE_BASIS file
Groups: Overall solver

MSK_IPAR_SIM_BASIS_FACTOR_USE¶

Controls whether an LU factorization of the basis is used in a hot-start. Forcing a refactorization sometimes improves the stability of the simplex optimizers, but in most cases there is a performance penalty.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_SIM_BASIS_FACTOR_USE MSK_ON file
Groups: Simplex optimizer

MSK_IPAR_SIM_DEGEN¶

Controls how aggressively degeneration is handled.

Default: FREE
Accepted: NONE, FREE, AGGRESSIVE, MODERATE, MINIMUM
Example: mosek -d MSK_IPAR_SIM_DEGEN MSK_SIM_DEGEN_FREE file
Groups: Simplex optimizer

MSK_IPAR_SIM_DETECT_PWL¶

Not in use.

Default

ON

Accepted

ON: PWL are detected.
OFF: PWL are not detected.

Example

mosek -d MSK_IPAR_SIM_DETECT_PWL MSK_ON file

Groups

Simplex optimizer

MSK_IPAR_SIM_DUAL_CRASH¶

Controls whether crashing is performed in the dual simplex optimizer. If this parameter is set to \(x\), then a crash will be performed if a basis consists of more than \((100-x)\mod f_v\) entries, where \(f_v\) is the number of fixed variables.

Default: 90
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_SIM_DUAL_CRASH 90 file
Groups: Dual simplex

MSK_IPAR_SIM_DUAL_PHASEONE_METHOD¶

An experimental feature.

Default: 0
Accepted: [0; 10]
Example: mosek -d MSK_IPAR_SIM_DUAL_PHASEONE_METHOD 0 file
Groups: Simplex optimizer

MSK_IPAR_SIM_DUAL_RESTRICT_SELECTION¶

The dual simplex optimizer can use a so-called restricted selection/pricing strategy to choose the outgoing variable. Hence, if restricted selection is applied, then the dual simplex optimizer first choose a subset of all the potential outgoing variables. Next, for some time it will choose the outgoing variable only among the subset. From time to time the subset is redefined. A larger value of this parameter implies that the optimizer will be more aggressive in its restriction strategy, i.e. a value of 0 implies that the restriction strategy is not applied at all.

Default: 50
Accepted: [0; 100]
Example: mosek -d MSK_IPAR_SIM_DUAL_RESTRICT_SELECTION 50 file
Groups: Dual simplex

MSK_IPAR_SIM_DUAL_SELECTION¶

Controls the choice of the incoming variable, known as the selection strategy, in the dual simplex optimizer.

Default: FREE
Accepted: FREE, FULL, ASE, DEVEX, SE, PARTIAL
Example: mosek -d MSK_IPAR_SIM_DUAL_SELECTION MSK_SIM_SELECTION_FREE file
Groups: Dual simplex

MSK_IPAR_SIM_EXPLOIT_DUPVEC¶

Controls if the simplex optimizers are allowed to exploit duplicated columns.

Default: OFF
Accepted: ON, OFF, FREE
Example: mosek -d MSK_IPAR_SIM_EXPLOIT_DUPVEC MSK_SIM_EXPLOIT_DUPVEC_OFF file
Groups: Simplex optimizer

MSK_IPAR_SIM_HOTSTART¶

Controls the type of hot-start that the simplex optimizer perform.

Default: FREE
Accepted: NONE, FREE, STATUS_KEYS
Example: mosek -d MSK_IPAR_SIM_HOTSTART MSK_SIM_HOTSTART_FREE file
Groups: Simplex optimizer

MSK_IPAR_SIM_HOTSTART_LU¶

Determines if the simplex optimizer should exploit the initial factorization.

Default

ON

Accepted

ON: Factorization is reused if possible.
OFF: Factorization is recomputed.

Example

mosek -d MSK_IPAR_SIM_HOTSTART_LU MSK_ON file

Groups

Simplex optimizer

MSK_IPAR_SIM_MAX_ITERATIONS¶

Maximum number of iterations that can be used by a simplex optimizer.

Default: 10000000
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_SIM_MAX_ITERATIONS 10000000 file
Groups: Simplex optimizer, Termination criteria

MSK_IPAR_SIM_MAX_NUM_SETBACKS¶

Controls how many set-backs are allowed within a simplex optimizer. A set-back is an event where the optimizer moves in the wrong direction. This is impossible in theory but may happen due to numerical problems.

Default: 250
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_SIM_MAX_NUM_SETBACKS 250 file
Groups: Simplex optimizer

MSK_IPAR_SIM_NON_SINGULAR¶

Controls if the simplex optimizer ensures a non-singular basis, if possible.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_SIM_NON_SINGULAR MSK_ON file
Groups: Simplex optimizer

MSK_IPAR_SIM_PRIMAL_CRASH¶

Controls whether crashing is performed in the primal simplex optimizer. In general, if a basis consists of more than (100-this parameter value)% fixed variables, then a crash will be performed.

Default: 90
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_SIM_PRIMAL_CRASH 90 file
Groups: Primal simplex

MSK_IPAR_SIM_PRIMAL_PHASEONE_METHOD¶

An experimental feature.

Default: 0
Accepted: [0; 10]
Example: mosek -d MSK_IPAR_SIM_PRIMAL_PHASEONE_METHOD 0 file
Groups: Simplex optimizer

MSK_IPAR_SIM_PRIMAL_RESTRICT_SELECTION¶

The primal simplex optimizer can use a so-called restricted selection/pricing strategy to choose the outgoing variable. Hence, if restricted selection is applied, then the primal simplex optimizer first choose a subset of all the potential incoming variables. Next, for some time it will choose the incoming variable only among the subset. From time to time the subset is redefined. A larger value of this parameter implies that the optimizer will be more aggressive in its restriction strategy, i.e. a value of 0 implies that the restriction strategy is not applied at all.

Default: 50
Accepted: [0; 100]
Example: mosek -d MSK_IPAR_SIM_PRIMAL_RESTRICT_SELECTION 50 file
Groups: Primal simplex

MSK_IPAR_SIM_PRIMAL_SELECTION¶

Controls the choice of the incoming variable, known as the selection strategy, in the primal simplex optimizer.

Default: FREE
Accepted: FREE, FULL, ASE, DEVEX, SE, PARTIAL
Example: mosek -d MSK_IPAR_SIM_PRIMAL_SELECTION MSK_SIM_SELECTION_FREE file
Groups: Primal simplex

MSK_IPAR_SIM_REFACTOR_FREQ¶

Controls how frequent the basis is refactorized. The value 0 means that the optimizer determines the best point of refactorization. It is strongly recommended NOT to change this parameter.

Default: 0
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_SIM_REFACTOR_FREQ 0 file
Groups: Simplex optimizer

MSK_IPAR_SIM_REFORMULATION¶

Controls if the simplex optimizers are allowed to reformulate the problem.

Default: OFF
Accepted: ON, OFF, FREE, AGGRESSIVE
Example: mosek -d MSK_IPAR_SIM_REFORMULATION MSK_SIM_REFORMULATION_OFF file
Groups: Simplex optimizer

MSK_IPAR_SIM_SAVE_LU¶

Controls if the LU factorization stored should be replaced with the LU factorization corresponding to the initial basis.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_SIM_SAVE_LU MSK_OFF file
Groups: Simplex optimizer

MSK_IPAR_SIM_SCALING¶

Controls how much effort is used in scaling the problem before a simplex optimizer is used.

Default: FREE
Accepted: FREE, NONE
Example: mosek -d MSK_IPAR_SIM_SCALING MSK_SCALING_FREE file
Groups: Simplex optimizer

MSK_IPAR_SIM_SCALING_METHOD¶

Controls how the problem is scaled before a simplex optimizer is used.

Default: POW2
Accepted: POW2, FREE
Example: mosek -d MSK_IPAR_SIM_SCALING_METHOD MSK_SCALING_METHOD_POW2 file
Groups: Simplex optimizer

MSK_IPAR_SIM_SEED¶

Sets the random seed used for randomization in the simplex optimizers.

Default: 23456
Accepted: [0; 32749]
Example: mosek -d MSK_IPAR_SIM_SEED 23456 file
Groups: Simplex optimizer

MSK_IPAR_SIM_SOLVE_FORM¶

Controls whether the primal or the dual problem is solved by the primal-/dual-simplex optimizer.

Default: FREE
Accepted: FREE, PRIMAL, DUAL
Example: mosek -d MSK_IPAR_SIM_SOLVE_FORM MSK_SOLVE_FREE file
Groups: Simplex optimizer

MSK_IPAR_SIM_STABILITY_PRIORITY¶

Controls how high priority the numerical stability should be given.

Default: 50
Accepted: [0; 100]
Example: mosek -d MSK_IPAR_SIM_STABILITY_PRIORITY 50 file
Groups: Simplex optimizer

MSK_IPAR_SIM_SWITCH_OPTIMIZER¶

The simplex optimizer sometimes chooses to solve the dual problem instead of the primal problem. This implies that if you have chosen to use the dual simplex optimizer and the problem is dualized, then it actually makes sense to use the primal simplex optimizer instead. If this parameter is on and the problem is dualized and furthermore the simplex optimizer is chosen to be the primal (dual) one, then it is switched to the dual (primal).

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_SIM_SWITCH_OPTIMIZER MSK_OFF file
Groups: Simplex optimizer

MSK_IPAR_SOL_FILTER_KEEP_BASIC¶

If turned on, then basic and super basic constraints and variables are written to the solution file independent of the filter setting.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_SOL_FILTER_KEEP_BASIC MSK_OFF file
Groups: Solution input/output

MSK_IPAR_SOL_FILTER_KEEP_RANGED¶

If turned on, then ranged constraints and variables are written to the solution file independent of the filter setting.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_SOL_FILTER_KEEP_RANGED MSK_OFF file
Groups: Solution input/output

MSK_IPAR_SOL_READ_NAME_WIDTH¶

When a solution is read by MOSEK and some constraint, variable or cone names contain blanks, then a maximum name width much be specified. A negative value implies that no name contain blanks.

Default: -1
Accepted: [-inf; +inf]
Example: mosek -d MSK_IPAR_SOL_READ_NAME_WIDTH -1 file
Groups: Data input/output, Solution input/output

MSK_IPAR_SOL_READ_WIDTH¶

Controls the maximal acceptable width of line in the solutions when read by MOSEK.

Default: 1024
Accepted: [80; +inf]
Example: mosek -d MSK_IPAR_SOL_READ_WIDTH 1024 file
Groups: Data input/output, Solution input/output

MSK_IPAR_SOLUTION_CALLBACK¶

Indicates whether solution callbacks will be performed during the optimization.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_SOLUTION_CALLBACK MSK_OFF file
Groups: Progress callback, Overall solver

MSK_IPAR_TIMING_LEVEL¶

Controls the amount of timing performed inside MOSEK.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_TIMING_LEVEL 1 file
Groups: Overall system

MSK_IPAR_WRITE_BAS_CONSTRAINTS¶

Controls whether the constraint section is written to the basic solution file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_BAS_CONSTRAINTS MSK_ON file
Groups: Data input/output, Solution input/output

MSK_IPAR_WRITE_BAS_HEAD¶

Controls whether the header section is written to the basic solution file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_BAS_HEAD MSK_ON file
Groups: Data input/output, Solution input/output

MSK_IPAR_WRITE_BAS_VARIABLES¶

Controls whether the variables section is written to the basic solution file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_BAS_VARIABLES MSK_ON file
Groups: Data input/output, Solution input/output

MSK_IPAR_WRITE_COMPRESSION¶

Controls whether the data file is compressed while it is written. 0 means no compression while higher values mean more compression.

Default: 9
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_WRITE_COMPRESSION 9 file
Groups: Data input/output

MSK_IPAR_WRITE_DATA_PARAM¶

If this option is turned on the parameter settings are written to the data file as parameters.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_DATA_PARAM MSK_OFF file
Groups: Data input/output

MSK_IPAR_WRITE_FREE_CON¶

Controls whether the free constraints are written to the data file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_FREE_CON MSK_ON file
Groups: Data input/output

MSK_IPAR_WRITE_GENERIC_NAMES¶

Controls whether generic names should be used instead of user-defined names when writing to the data file.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_GENERIC_NAMES MSK_OFF file
Groups: Data input/output

MSK_IPAR_WRITE_GENERIC_NAMES_IO¶

Index origin used in generic names.

Default: 1
Accepted: [0; +inf]
Example: mosek -d MSK_IPAR_WRITE_GENERIC_NAMES_IO 1 file
Groups: Data input/output

MSK_IPAR_WRITE_IGNORE_INCOMPATIBLE_ITEMS¶

Controls if the writer ignores incompatible problem items when writing files.

Default

OFF

Accepted

ON: Ignore items that cannot be written to the current output file format.
OFF: Produce an error if the problem contains items that cannot the written to the current output file format.

Example

mosek -d MSK_IPAR_WRITE_IGNORE_INCOMPATIBLE_ITEMS MSK_OFF file

Groups

Data input/output

MSK_IPAR_WRITE_INT_CONSTRAINTS¶

Controls whether the constraint section is written to the integer solution file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_INT_CONSTRAINTS MSK_ON file
Groups: Data input/output, Solution input/output

MSK_IPAR_WRITE_INT_HEAD¶

Controls whether the header section is written to the integer solution file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_INT_HEAD MSK_ON file
Groups: Data input/output, Solution input/output

MSK_IPAR_WRITE_INT_VARIABLES¶

Controls whether the variables section is written to the integer solution file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_INT_VARIABLES MSK_ON file
Groups: Data input/output, Solution input/output

MSK_IPAR_WRITE_JSON_INDENTATION¶

When set, the JSON task and solution files are written with indentation for better readability.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_JSON_INDENTATION MSK_OFF file
Groups: Data input/output

MSK_IPAR_WRITE_LP_FULL_OBJ¶

Write all variables, including the ones with 0-coefficients, in the objective.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_LP_FULL_OBJ MSK_ON file
Groups: Data input/output

MSK_IPAR_WRITE_LP_LINE_WIDTH¶

Maximum width of line in an LP file written by MOSEK.

Default: 80
Accepted: [40; +inf]
Example: mosek -d MSK_IPAR_WRITE_LP_LINE_WIDTH 80 file
Groups: Data input/output

MSK_IPAR_WRITE_MPS_FORMAT¶

Controls in which format the MPS is written.

Default: FREE
Accepted: STRICT, RELAXED, FREE, CPLEX
Example: mosek -d MSK_IPAR_WRITE_MPS_FORMAT MSK_MPS_FORMAT_FREE file
Groups: Data input/output

MSK_IPAR_WRITE_MPS_INT¶

Controls if marker records are written to the MPS file to indicate whether variables are integer restricted.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_MPS_INT MSK_ON file
Groups: Data input/output

MSK_IPAR_WRITE_SOL_BARVARIABLES¶

Controls whether the symmetric matrix variables section is written to the solution file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_SOL_BARVARIABLES MSK_ON file
Groups: Data input/output, Solution input/output

MSK_IPAR_WRITE_SOL_CONSTRAINTS¶

Controls whether the constraint section is written to the solution file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_SOL_CONSTRAINTS MSK_ON file
Groups: Data input/output, Solution input/output

MSK_IPAR_WRITE_SOL_HEAD¶

Controls whether the header section is written to the solution file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_SOL_HEAD MSK_ON file
Groups: Data input/output, Solution input/output

MSK_IPAR_WRITE_SOL_IGNORE_INVALID_NAMES¶

Even if the names are invalid MPS names, then they are employed when writing the solution file.

Default: OFF
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_SOL_IGNORE_INVALID_NAMES MSK_OFF file
Groups: Data input/output, Solution input/output

MSK_IPAR_WRITE_SOL_VARIABLES¶

Controls whether the variables section is written to the solution file.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_SOL_VARIABLES MSK_ON file
Groups: Data input/output, Solution input/output

MSK_IPAR_WRITE_TASK_INC_SOL¶

Controls whether the solutions are stored in the task file too.

Default: ON
Accepted: ON, OFF
Example: mosek -d MSK_IPAR_WRITE_TASK_INC_SOL MSK_ON file
Groups: Data input/output

MSK_IPAR_WRITE_XML_MODE¶

Controls if linear coefficients should be written by row or column when writing in the XML file format.

Default: ROW
Accepted: ROW, COL
Example: mosek -d MSK_IPAR_WRITE_XML_MODE MSK_WRITE_XML_MODE_ROW file
Groups: Data input/output

10.2.3 String parameters¶

MSK_SPAR_BAS_SOL_FILE_NAME¶

Name of the bas solution file.

Accepted: Any valid file name.
Example: mosek -d MSK_SPAR_BAS_SOL_FILE_NAME somevalue file
Groups: Data input/output, Solution input/output

MSK_SPAR_DATA_FILE_NAME¶

Data are read and written to this file.

Accepted: Any valid file name.
Example: mosek -d MSK_SPAR_DATA_FILE_NAME somevalue file
Groups: Data input/output

MSK_SPAR_DEBUG_FILE_NAME¶

MOSEK debug file.

Accepted: Any valid file name.
Example: mosek -d MSK_SPAR_DEBUG_FILE_NAME somevalue file
Groups: Data input/output

MSK_SPAR_INT_SOL_FILE_NAME¶

Name of the int solution file.

Accepted: Any valid file name.
Example: mosek -d MSK_SPAR_INT_SOL_FILE_NAME somevalue file
Groups: Data input/output, Solution input/output

MSK_SPAR_ITR_SOL_FILE_NAME¶

Name of the itr solution file.

Accepted: Any valid file name.
Example: mosek -d MSK_SPAR_ITR_SOL_FILE_NAME somevalue file
Groups: Data input/output, Solution input/output

MSK_SPAR_MIO_DEBUG_STRING¶

For internal debugging purposes.

Accepted: Any valid string.
Example: mosek -d MSK_SPAR_MIO_DEBUG_STRING somevalue file
Groups: Data input/output

MSK_SPAR_PARAM_COMMENT_SIGN¶

Only the first character in this string is used. It is considered as a start of comment sign in the MOSEK parameter file. Spaces are ignored in the string.

Default

%%

Accepted

Any valid string.

Example

mosek -d MSK_SPAR_PARAM_COMMENT_SIGN %% file

Groups

Data input/output

MSK_SPAR_PARAM_READ_FILE_NAME¶

Modifications to the parameter database is read from this file.

Accepted: Any valid file name.
Example: mosek -d MSK_SPAR_PARAM_READ_FILE_NAME somevalue file
Groups: Data input/output

MSK_SPAR_PARAM_WRITE_FILE_NAME¶

The parameter database is written to this file.

Accepted: Any valid file name.
Example: mosek -d MSK_SPAR_PARAM_WRITE_FILE_NAME somevalue file
Groups: Data input/output

MSK_SPAR_READ_MPS_BOU_NAME¶

Name of the BOUNDS vector used. An empty name means that the first BOUNDS vector is used.

Accepted: Any valid MPS name.
Example: mosek -d MSK_SPAR_READ_MPS_BOU_NAME somevalue file
Groups: Data input/output

MSK_SPAR_READ_MPS_OBJ_NAME¶

Name of the free constraint used as objective function. An empty name means that the first constraint is used as objective function.

Accepted: Any valid MPS name.
Example: mosek -d MSK_SPAR_READ_MPS_OBJ_NAME somevalue file
Groups: Data input/output

MSK_SPAR_READ_MPS_RAN_NAME¶

Name of the RANGE vector used. An empty name means that the first RANGE vector is used.

Accepted: Any valid MPS name.
Example: mosek -d MSK_SPAR_READ_MPS_RAN_NAME somevalue file
Groups: Data input/output

MSK_SPAR_READ_MPS_RHS_NAME¶

Name of the RHS used. An empty name means that the first RHS vector is used.

Accepted: Any valid MPS name.
Example: mosek -d MSK_SPAR_READ_MPS_RHS_NAME somevalue file
Groups: Data input/output

MSK_SPAR_REMOTE_OPTSERVER_HOST¶

URL of the remote optimization server in the format (http|https)://server:port. If set, all subsequent calls to any MOSEK function that involves synchronous optimization will be sent to the specified OptServer instead of being executed locally. Passing empty string deactivates this redirection.

Accepted: Any valid URL.
Example: mosek -d MSK_SPAR_REMOTE_OPTSERVER_HOST somevalue file
Groups: Overall system

MSK_SPAR_REMOTE_TLS_CERT¶

List of known server certificates in PEM format.

Accepted: PEM files separated by new-lines.
Example: mosek -d MSK_SPAR_REMOTE_TLS_CERT somevalue file
Groups: Overall system

MSK_SPAR_REMOTE_TLS_CERT_PATH¶

Path to known server certificates in PEM format.

Accepted: Any valid path.
Example: mosek -d MSK_SPAR_REMOTE_TLS_CERT_PATH somevalue file
Groups: Overall system

MSK_SPAR_SENSITIVITY_FILE_NAME¶

Not applicable.

Accepted: Any valid string.
Example: mosek -d MSK_SPAR_SENSITIVITY_FILE_NAME somevalue file
Groups: Data input/output

MSK_SPAR_SENSITIVITY_RES_FILE_NAME¶

Not applicable.

Accepted: Any valid string.
Example: mosek -d MSK_SPAR_SENSITIVITY_RES_FILE_NAME somevalue file
Groups: Data input/output

MSK_SPAR_SOL_FILTER_XC_LOW¶

A filter used to determine which constraints should be listed in the solution file. A value of \(0.5\) means that all constraints having xc[i]>0.5 should be listed, whereas +0.5 means that all constraints having xc[i]>=blc[i]+0.5 should be listed. An empty filter means that no filter is applied.

Accepted: Any valid filter.
Example: mosek -d MSK_SPAR_SOL_FILTER_XC_LOW somevalue file
Groups: Data input/output, Solution input/output

MSK_SPAR_SOL_FILTER_XC_UPR¶

A filter used to determine which constraints should be listed in the solution file. A value of 0.5 means that all constraints having xc[i]<0.5 should be listed, whereas -0.5 means all constraints having xc[i]<=buc[i]-0.5 should be listed. An empty filter means that no filter is applied.

Accepted: Any valid filter.
Example: mosek -d MSK_SPAR_SOL_FILTER_XC_UPR somevalue file
Groups: Data input/output, Solution input/output

MSK_SPAR_SOL_FILTER_XX_LOW¶

A filter used to determine which variables should be listed in the solution file. A value of “0.5” means that all constraints having xx[j]>=0.5 should be listed, whereas “+0.5” means that all constraints having xx[j]>=blx[j]+0.5 should be listed. An empty filter means no filter is applied.

Accepted: Any valid filter.
Example: mosek -d MSK_SPAR_SOL_FILTER_XX_LOW somevalue file
Groups: Data input/output, Solution input/output

MSK_SPAR_SOL_FILTER_XX_UPR¶

A filter used to determine which variables should be listed in the solution file. A value of “0.5” means that all constraints having xx[j]<0.5 should be printed, whereas “-0.5” means all constraints having xx[j]<=bux[j]-0.5 should be listed. An empty filter means no filter is applied.

Accepted: Any valid file name.
Example: mosek -d MSK_SPAR_SOL_FILTER_XX_UPR somevalue file
Groups: Data input/output, Solution input/output

MSK_SPAR_STAT_KEY¶

Key used when writing the summary file.

Accepted: Any valid string.
Example: mosek -d MSK_SPAR_STAT_KEY somevalue file
Groups: Data input/output

MSK_SPAR_STAT_NAME¶

Name used when writing the statistics file.

Accepted: Any valid XML string.
Example: mosek -d MSK_SPAR_STAT_NAME somevalue file
Groups: Data input/output

MSK_SPAR_WRITE_LP_GEN_VAR_NAME¶

Sometimes when an LP file is written additional variables must be inserted. They will have the prefix denoted by this parameter.

Default: xmskgen
Accepted: Any valid string.
Example: mosek -d MSK_SPAR_WRITE_LP_GEN_VAR_NAME xmskgen file
Groups: Data input/output

10.2 Parameters (alphabetical list sorted by type)¶

10.2.1 Double parameters¶

10.2.2 Integer parameters¶

10.2.3 String parameters¶

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