every extension can either implement the single threaded methods e.g. DoPreVoltageUpdates() or the multithreading aquivalent method e.g. DoPreVoltageUpdates(int threadID) Engine_Ext_UPML class is an example for a multithreading extensions
todo: further speed optimization for this extension... Signed-off-by: Thorsten Liebig <Thorsten.Liebig@gmx.de>
Operator extension implementing an uniaxial perfectly matched layer (upml) This new pml implementation is going to replace the old split-field pml