Options for MDO Formulation algorithms¶
BiLevel¶
Module: gemseo.formulations.bilevel
Here are the options available in GEMSEO:
- Options
**mda_options (Any)
The options passed to the MDA at construction.
apply_cstr_to_system (bool)
Whether the
add_constraint()
method adds the constraint to the optimization problem of the system scenario.By default it is set to True.
apply_cstr_tosub_scenarios (bool)
Whether the
add_constraint()
method adds the constraint to the optimization problem of the sub-scenario capable of computing the constraint.By default it is set to True.
design_space (DesignSpace)
The design space.
disciplines (Sequence[MDODiscipline])
The disciplines.
grammar_type (str)
The type of the input and output grammars, either
MDODiscipline.JSON_GRAMMAR_TYPE
orMDODiscipline.SIMPLE_GRAMMAR_TYPE
.By default it is set to JSONGrammar.
maximize_objective (bool)
If True, the objective function is maximized.
By default it is set to False.
mda_name (str)
The name of the MDA class to be used.
By default it is set to MDAChain.
multithread_scenarios (bool)
If True and parallel_scenarios=True, the sub-scenarios are run in parallel using multi-threading; if False and parallel_scenarios=True, multi-processing is used.
By default it is set to True.
objective_name (str)
The name of the objective function.
parallel_scenarios (bool)
Whether to run the sub-scenarios in parallel.
By default it is set to False.
reset_x0_before_opt (bool)
Whether to restart the sub optimizations from the initial guesses, otherwise warm start them.
By default it is set to False.
DisciplinaryOpt¶
Module: gemseo.formulations.disciplinary_opt
Here are the options available in GEMSEO:
- Options
design_space (DesignSpace)
The design space.
disciplines (Sequence[MDODiscipline])
The disciplines.
grammar_type (str)
The type of the input and output grammars, either
MDODiscipline.JSON_GRAMMAR_TYPE
orMDODiscipline.SIMPLE_GRAMMAR_TYPE
.By default it is set to JSONGrammar.
maximize_objective (bool)
If True, the objective function is maximized.
By default it is set to False.
objective_name (str)
The name of the objective function.
IDF¶
Module: gemseo.formulations.idf
Here are the options available in GEMSEO:
- Options
design_space (DesignSpace)
The design space.
disciplines (Sequence[MDODiscipline])
The disciplines.
grammar_type (str)
The type of the input and output grammars, either
MDODiscipline.JSON_GRAMMAR_TYPE
orMDODiscipline.SIMPLE_GRAMMAR_TYPE
.By default it is set to JSONGrammar.
maximize_objective (bool)
If True, the objective function is maximized.
By default it is set to False.
normalize_constraints (bool)
If True, the outputs of the coupling consistency constraints are scaled.
By default it is set to True.
objective_name (str)
The name of the objective function.
parallel_exec (bool)
If True, all constraints and objectives are computed in parallel. At every iteration, all disciplines are executed in parallel. Otherwise, a separate constraint is created for each discipline with couplings.
By default it is set to False.
start_at_equilibrium (bool)
If True, an MDA is used to initialize the coupling variables.
By default it is set to False.
use_threading (bool)
If True and parallel_exec=True, the disciplines are run in parallel using multi-threading. If False and parallel_exec=True, multi-processing is used.
By default it is set to True.
MDF¶
Module: gemseo.formulations.mdf
Here are the options available in GEMSEO:
- Options
**mda_options (Any)
The options passed to the MDA at construction.
design_space (DesignSpace)
The design space.
disciplines (Sequence[MDODiscipline])
The disciplines.
grammar_type (str)
The type of the input and output grammars, either
MDODiscipline.JSON_GRAMMAR_TYPE
orMDODiscipline.SIMPLE_GRAMMAR_TYPE
.By default it is set to JSONGrammar.
main_mda_class (str)
The name of the class used for the main MDA, typically the
MDAChain
, but one can force to useMDAGaussSeidel
for instance.By default it is set to MDAChain.
maximize_objective (bool)
If True, the objective function is maximized.
By default it is set to False.
objective_name (str)
The name of the objective function.
sub_mda_class (str)
The name of the class used for the sub-MDA.
By default it is set to MDAJacobi.