LINDO/LINDOGlobal - Gams

264 LINDO/LINDOGlobal
SOLVER CONCURRENT OPTMODE (integer)
Controls if simplex and interior-point optimizers will run concurrently, 0 means no concurrent runs will be performed,
1 means both optimizers will run concurrently if at least two threads exist in system, 2 means both optimizers will
run concurrently.
(default = 0)
0 no concurrent runs
1 run concurrently if at least 2 threads exist
2 run concurrently
IPM TOL INFEAS (real)
This is the tolerance to declare the model primal or dual infeasible using the interior-point optimizer. A smaller
number means the optimizer gets more conservative about declaring the model infeasible.
(default = 1e-8)
IPM TOL PATH (real)
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. For numerically unstable problems it might help to increase this parameter.
(default = 1e-8)
IPM TOL PFEAS (real)
Primal feasibility tolerance used for linear and quadratic optimization problems.
(default = 1e-8)
IPM TOL REL STEP (real)
Relative step size to the boundary for linear and quadratic optimization problems.
(default = 0.9999)
IPM TOL PSAFE (real)
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 might be worthwhile to increase this value.
(default = 1)
IPM TOL DFEAS (real)
Dual feasibility tolerance used for linear and quadratic optimization problems.
(default = 1e-8)
IPM TOL DSAFE (real)
Controls the initial dual starting point used by the interior-point optimizer. If the interior-point optimizer converges
slowly and/or the dual variables associated with constraint or variable bounds are very large, then it might be worthwhile
to increase this value.
(default = 1)
IPM TOL MU RED (real)
Relative complementarity gap tolerance.
(default = 1e-16)
IPM BASIS REL TOL S (real)
Maximum relative dual bound violation allowed in an optimal basic solution.
(default = 1e-12)