A few preconditioners are available for the multilevel fast multipole method (MLFMM).
Note:
It is recommended to use the default settings. Changing the preconditioner is
recommended only for advanced users.
The number in brackets corresponds to the value of the I3 field at the CG
card in the model .pre file.
On the Solve/Run tab, in the
Solution Settings group, click the Solver Settings icon. On the Solver Settings dialog, click the
Advanced tab.Figure 1. The Solver Settings dialog (Advanced
tab).