[Archive] ERROR in LDLt decomposition in assembPrecontNonLinear

Message by Hodong Lee:
Hello. I managed to reach the simulation step.
However, when I tried to launch simulation, the following error continuously occurred in Log console:
INFO s.U.i.SpisIO ! SpisIO.java:372 ! ERROR in LDLt decomposition in assembPrecontNonLinear =(some number…)
I am using SPIS-Propulsion-6.0.0-win64b.
Geometry that I made is a small box satellite, and the top of the satellite has a small circle which corresponds to the thrust exit plane.
Pop 0 is ions1(O+) : type PICVolDistrib
-> with density 9.9999998E10m-3
-> with temperature 1.0eV
Pop 1 is elec1(electron) : type PICVolDistrib
-> with density 9.9999998E10m-3
-> with temperature 0.2eV
Pop 2 is Thruster0_1_Xe+(Xe+) : type PICVolDistrib
Pop 3 is Thruster0_2_Xe(Xe) : type PICVolDistribWithSpeedUp
Pop 4 is Thruster0_3_Xe++(Xe++) : type PICVolDistrib
Pop 5 is Thruster0_4_Xe+(Xe+) : type PICVolDistrib
Pop 6 is Thruster0Electrons(electron) : type electric_propulsion.SPT100CathodeElectronModel
-> with density 1.4395545E16m-3
-> with temperature 5.0eV

Is this because of the wrong global parameter setting?
Thank you.

Message by Hodong Lee:
Oh, I omitted some sentence.
The following is the particle distribution settings that I have assigned.
Pop 0 is ions1(O+) : type PICVolDistrib
-> with density 9.9999998E10m-3
-> with temperature 1.0eV
Pop 1 is elec1(electron) : type PICVolDistrib
-> with density 9.9999998E10m-3
-> with temperature 0.2eV
Pop 2 is Thruster0_1_Xe+(Xe+) : type PICVolDistrib
Pop 3 is Thruster0_2_Xe(Xe) : type PICVolDistribWithSpeedUp
Pop 4 is Thruster0_3_Xe++(Xe++) : type PICVolDistrib
Pop 5 is Thruster0_4_Xe+(Xe+) : type PICVolDistrib
Pop 6 is Thruster0Electrons(electron) : type electric_propulsion.SPT100CathodeElectronModel
I wonder if I can fix this error by adjusting the global parameter.
I look forward to your reply.
Thank you.

Message by Sébastien Hess:
Hello,
the error you get comes from the Poisson solver. Apparently it fails to invert the Poisson matrix.
Can you check the quality of your mesh? Some quality factors should appear in the initialization popup.
Best Regards,
Sébastien