IdVd Characteristics calculation -Error Message

[chitrapandy]

Hi,

I am trying to calculate IdVd characteristics  and ended with this error.
I used this tutorial as reference and try to rectify the error message to call update () first.
Still I am getting the same error.

https://docs.quantumatk.com/manual/Types/IVCharacteristics/IVCharacteristics.html
https://docs.quantumatk.com/tutorials/ivcharacteristics/ivcharacteristics.html#ivcharacteristics

Please suggest the solution for this error.


Traceback (most recent call last):
  File "zipdir\NL\GUI\MainWindow\LabFloor\LabFloorModel.py", line 333, in load
  File "C:\Program Files\QuantumATK\QuantumATK-P-2019.03-SP1\Lib\site-packages\AddOns\ATKDataReader\ATKDataReader.py", line 363, in load
    data._readHeavyweightData()
  File "zipdir\NL\Study\Study.py", line 430, in _readHeavyweightData
  File "zipdir\NL\IO\NLSaveUtilities.py", line 853, in nlread
  File "zipdir\NL\IO\HDF5.py", line 544, in readHDF5
  File "zipdir\NL\IO\HDF5.py", line 644, in readHDF5Group
  File "zipdir\NL\IO\Serializable.py", line 338, in _fromVersionedData
  File "zipdir\NL\IO\Serializable.py", line 436, in __initFromVersionedData
  File "zipdir\NL\Study\IVCharacteristics.py", line 1870, in __finalizeObject
  File "zipdir\NL\Study\Study.py", line 554, in _refreshDataCache
  File "zipdir\NL\Study\Study.py", line 195, in add
  File "zipdir\NL\Study\IVCharacteristics.py", line 220, in _process
  File "zipdir\NL\Calculators\Interfaces\CalculatorInterface.py", line 94, in isConverged
  File "zipdir\NL\Calculators\Interfaces\CalculatorInterface.py", line 155, in _convergenceInformation
NL.ComputerScienceUtilities.Exceptions.NLError: No convergence information available. Call "update()" first.

Thank you
Chitra

[Petr Khomyakov]

Please describe in a step-by-step manner what you did to get this error message. Also, attach your python scripts and related log files.

[chitrapandy]

Hi,

I have already attached my python script file.
Here I have created a GAA device structure using SiNW.
Trying to simulate the Id Vd curve for zero bias condition for varying Vd from 0 to 1V using IV characteristics study object.
Pls find the log file attached.
chitra

[Petr Khomyakov]

One should set a restart configuration in a different way for the IVCharacteristics study object, see setCalculator(gate_source_voltage, drain_source_voltage, calculator, initial_state=None) in the manual https://docs.quantumatk.com/manual/Types/IVCharacteristics/IVCharacteristics.html, as well as your modified script attached.

I would also recommend to avoid using filename names with spaces. The latter can always be replaced with underscore "_" or dash "-", for instance.

[chitrapandy]

I used the restart configuration which is provided in the manual but still unable to run the script ended with the error in the restart_configuration. attached the log file and script.

I checked nearly most of the tutorials talking abt this restart method usage examples. Still I dont understand why this error occured. Unable to solve to solve this error for long time.

Can anyone please help to rectify this error.

Thanks in advance.

Thank you
Regards
Chitra