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filling matrix vs solving matrix

Question asked by SIMONE.FUSI on May 14, 2008
Latest reply on Sep 2, 2009 by HERMANW
In 2008 sp1 a NlogN solver is added which should reduce simulation time significantly with large problems (> thousands unknowns).
Trying it with a simulation having 5000 unknowns (single layer, no holes but thick conductor with side currents) I note that the loading matrix phase (N2) is largely dominant in respect the simulation phase with all the methods, N3to NlogN).
So I should expect that for larger problems, using either the iterative solver or the NlogN solver the simulation time should increase as N2because loading time reamains dominant.
Is It correct?