[Archive] I don't know what should I modify

Message by SHINYA NAKAMURA:
What should I modify when I get below error messages?
mesh size? global parameter?
I want your coorporation!
at spis.Solver.Poisson.PoissonInit.quicksort(PoissonInit.java:150)
at spis.Solver.Poisson.PoissonInit.renumcklb(PoissonInit.java:225)
at spis.Solver.Poisson.PoissonInit.cuthilMackee(PoissonInit.java:91)
at spis.Solver.Poisson.ConjGrad3DUnstructPoissonSolver.init(ConjGrad3DUnstructPoissonSolver.java:332)
at spis.Solver.Poisson.ConjGrad3DUnstructPoissonSolver.(ConjGrad3DUnstructPoissonSolver.java:185)
at spis.Top.Simulation.SimulationFromUIParams.init(SimulationFromUIParams.java:933)
at spis.Top.Simulation.SimulationFromUIParams.(SimulationFromUIParams.java:438)
at spis.Top.Top.NumTopFromUI.(NumTopFromUI.java:157)
at org.spis.ui.ui2num.util.Ui2Num.buildNumTopFromUI(Ui2Num.java:355)
at org.spis.ui.ui2num.command.NumTopFromUICommand.run(NumTopFromUICommand.java:162)
at org.spis.ui.ui2num.command.NumTopFromUICommand.run(NumTopFromUICommand.java:52)
at org.keridwen.core.messaging.AbstractCommand.execute(AbstractCommand.java:200)
at org.keridwen.core.messaging.DefaultBundleController$CallableCommand.call(DefaultBundleController.java:260)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Message by Sébastien Hess:
Dear Nakamura-san,
This is a typical error related to the meshing. This means that the mesh is not suitable for SPIS simulation: it can be that all volumes are not meshed, that all surfaces do not correspond to the faces of the cells (this happens often when a surface is given two physical ids) or some similar mesh problem.
Regards,
Sébastien

Message by SHINYA NAKAMURA:
Hello Mr.Sébastien
the error are about the mesh!
so I will check my program again!
Thank you very much.
NAKAMURA