# \[Archive\] Error while initializing Numerical Kernel
**URL:** https://forum.spis.org/t/archive-error-while-initializing-numerical-kernel/656
**Category:** SPIS
**Created:** [25 July 2016 11:36 UTC](https://forum.spis.org/t/archive-error-while-initializing-numerical-kernel/656 "2016-07-25T11:36:00Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@system](https://forum.spis.org/u/system)
#### Post date: [25 July 2016 11:36 UTC](https://forum.spis.org/t/archive-error-while-initializing-numerical-kernel/656/1 "2016-07-25T11:36:00Z")
Message by **Alessandro Vicini** :
I get an error when I try to finalize the run after editing the global parameters, following is the last part of the debug.log file. Any suggestion about what can be wrong? Thank you.
2016-07-25 11:31:06,078 INFO s.U.i.SpisIO [! SpisIO.java:335 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/SpisIO.java:335) Simulation was built from UI parameters
2016-07-25 11:31:06,078 INFO s.U.i.SpisIO [! SpisIO.java:335 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/SpisIO.java:335) spacecraft surface : 2.1014664m2
2016-07-25 11:31:06,234 INFO s.U.i.SpisIO [! SpisIO.java:373 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/SpisIO.java:373) Parameter refPot not found in global parameter list = returning default value:2016-07-25 11:31:06,234 INFO s.U.i.SpisIO [! SpisIO.java:373 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/SpisIO.java:373) 1.02016-07-25 11:31:06,234 INFO s.U.i.SpisIO [! SpisIO.java:335 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/SpisIO.java:335)2016-07-25 11:31:06,265 INFO s.U.i.SpisIO [! SpisIO.java:373 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/SpisIO.java:373) Parameter ionMagnetized not found in global parameter list = returning default value:2016-07-25 11:31:06,265 INFO s.U.i.SpisIO [! SpisIO.java:373 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/SpisIO.java:373) 1
2016-07-25 11:31:06,265 INFO s.U.i.SpisIO [! SpisIO.java:335 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/SpisIO.java:335)2016-07-25 11:31:06,265 INFO s.U.i.SpisIO [! SpisIO.java:335 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/SpisIO.java:335) Population of ions1 (type BiMaxwellianEnvironment) could not be created with an EField (electric field with singularity handling close to wires and thin plates),
2016-07-25 11:31:06,265 INFO s.U.i.SpisIO [! SpisIO.java:335 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/SpisIO.java:335) which is not necessarily a problem for some types (e.g. GlobalMaxwellBoltzmannVolDistrib)
2016-07-25 11:31:06,265 INFO s.U.i.SpisIO [! SpisIO.java:335 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/SpisIO.java:335) =\> Trying now to create it with a basic VolField as electric field (no singularity handling)
2016-07-25 11:31:06,281 ERROR o.s.u.u.c.NumTopFromUICommand [! NumTopFromUICommand.java:193 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/NumTopFromUICommand.java:193) Error in UI2NUM
spis.Util.Exception.SpisRuntimeException: Exception at spis.Top.Plasma.BiMaxwellianEnvironment instantiation
at spis.Util.io.Introspection.getUIDefinedInstance(Introspection.java:117) ~[! na:na !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/na:na)
at spis.Top.Simulation.SimulationFromUIParams.init(SimulationFromUIParams.java:994) ~[! org-spis-num-sci-geo-5.1.8.jar:5.1.8 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/org-spis-num-sci-geo-5.1.8.jar:5.1.8)
at spis.Top.Simulation.SimulationFromUIParams.(SimulationFromUIParams.java:438) ~[! org-spis-num-sci-geo-5.1.8.jar:5.1.8 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/org-spis-num-sci-geo-5.1.8.jar:5.1.8)
at spis.Top.Top.NumTopFromUI.(NumTopFromUI.java:157) ~[! org-spis-num-sci-geo-5.1.8.jar:5.1.8 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/org-spis-num-sci-geo-5.1.8.jar:5.1.8)
at org.spis.ui.ui2num.util.Ui2Num.buildNumTopFromUI(Ui2Num.java:355) ~[! org-spis-ui-ui2num-5.1.8.jar:na !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/org-spis-ui-ui2num-5.1.8.jar:na)
at org.spis.ui.ui2num.command.NumTopFromUICommand.run(NumTopFromUICommand.java:162) [! org-spis-ui-ui2num-5.1.8.jar:na !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/org-spis-ui-ui2num-5.1.8.jar:na)
at org.spis.ui.ui2num.command.NumTopFromUICommand.run(NumTopFromUICommand.java:52) [! org-spis-ui-ui2num-5.1.8.jar:na !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/org-spis-ui-ui2num-5.1.8.jar:na)
at org.keridwen.core.messaging.AbstractCommand.execute(AbstractCommand.java:200) [! org-keridwen-core-messaging-2.0.8.jar:na !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/org-keridwen-core-messaging-2.0.8.jar:na)
at org.keridwen.core.messaging.DefaultBundleController$CallableCommand.call(DefaultBundleController.java:260) [! org-keridwen-core-messaging-2.0.8.jar:na !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/org-keridwen-core-messaging-2.0.8.jar:na)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) [! na:1.6.0\_22 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/na:1.6.0%5C_22)
at java.util.concurrent.FutureTask.run(Unknown Source) [! na:1.6.0\_22 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/na:1.6.0%5C_22)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) [! na:1.6.0\_22 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/na:1.6.0%5C_22)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [! na:1.6.0\_22 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/na:1.6.0%5C_22)
at java.lang.Thread.run(Unknown Source) [! na:1.6.0\_22 !](https://forum.spis.org/projects/spine/home/community/forumsPages/spis/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/Error%5C_while%5C_initializing%5C_Numerical%5C_Kernel/na:1.6.0%5C_22)
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### Author:  [@system](https://forum.spis.org/u/system)
#### Post date: [25 July 2016 13:21 UTC](https://forum.spis.org/t/archive-error-while-initializing-numerical-kernel/656/2 "2016-07-25T13:21:00Z")
Message by **Jean-Charles Mateo-Velez** :
Hi,
it comes from the initialization of the plasma. What is the model used for electrons and ions ?
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### Author:  [@system](https://forum.spis.org/u/system)
#### Post date: [25 July 2016 13:33 UTC](https://forum.spis.org/t/archive-error-while-initializing-numerical-kernel/656/3 "2016-07-25T13:33:00Z")
Message by **Alessandro Vicini** :
Default values: GlobalMaxwellBoltzmannDistributions, BiMaxwellian environment type.
I was able to work around the problem by restarting the case from scratch.
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### Author:  [@system](https://forum.spis.org/u/system)
#### Post date: [10 July 2020 12:42 UTC](https://forum.spis.org/t/archive-error-while-initializing-numerical-kernel/656/4 "2020-07-10T12:42:56Z")