#295 DOPTPRM, OPTMETH

DOPTPRM, OPTMETH
Options to choose the optimization algorithm.

MFD = Method of feasible directions. MFD is the default optimizer for problems with a large number of constraints
(but smaller number of design variables) such as size/gauge and shape.

SQP = Sequential Quadratic Programming.

DUAL = Enhanced Dual Optimizer based on separable convex approximation. 
DUAL2 is the default optimizer for problems with a large number of design variables such as topology, free-size and topography.
DUAL2 is an enhanced version of the proprietary CONLIN dual optimizer. Solution stability has
been improved, reducing probability of failure in converging to a solution. The default optimizer for problems with a large
number of design variables such as topology, free-size and topography is DUAL2. You can switch to DUAL in case you run into
issues with the default DUAL2 for Topology, Free-Size, or Topography optimization.

You can switch to DUAL or MMA, in case you run into convergence issues with the default DUAL2 for Topology, Free-Size, or Topography optimization.

MMA = Method of Moving Asymptotes.

BIGOPT = Large scale optimization algorithm.

MFD, SQP (primal methods) and BIGOPT are more suitable for size/gauge and shape, since the approximate problem
typically involves coupled terms, due to the advanced approximation formulation utilizing intermediate variables
and responses.
If Equality Constraints are activated in size and shape optimization, then SQP is the default optimizer.