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help on convergency

Dr. Parkhurst:

Hello, how are you !

Very thankful of your previous help.

But I still can not work out of the convergency problem. Attached is an
input file for kinetic sumulation. Though the simulation results sounds ok,
but it also warns me like this:


WARNING: Error: maximum iterations exceeded, 100

Numerical method failed with this set of convergence parameters.
WARNING: Trying smaller step size, pe step size 10, 5 ...

WARNING: Error: maximum iterations exceeded, 200

Numerical method failed with this set of convergence parameters.
WARNING: Trying diagonal scaling ...


Though I have tried the smaller step or Rung_kuta methods, it didn't work.

Could you please tell me if there is any other way to solve this problem. If
no choice, how confident i can use the final result ?

Due to the importance of this simulation result, I don't want to risk any
in-CONSPIRACY. But i do need some kind of simulation result. So here i have
to come to you for help again.

Very appreciated of your help.

Young Wang

Binghamton University
Binghamton, New York 13903

Attachment: gu11_B01.pqi
Description: Binary data

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