DimSubSpace

Type:int Range:[2, 2147483647] Default:5 Appearance:simple

Use this parameter to improve the convergence of the iterative domain decomposition solver.

Within the domain decomposition solver adjacent sub-domains are coupled iteratively by illuminating each sub-domain with all scattered fields of its neighbors (i.e., using the scattered field distributions of the neighbours as additional sources for the scattering problem). This way, in each iteration step and for each sub-domain a solution for the actual illumination is computed from scratch.

The algorithm can be accelerated when storing the history of solutions and when using this to formulate a coupling condition at the interfaces by minimizing the coupling error. The discussed parameter DimSubSpace defines the number of previous solutions to be taken into account in the history of solutions.

Using a large value may lead to memory shortage.