FAQ
This list some common - often numerical - errors, that can be fixed by better understanding the ODE-Problem inside your FMU.
Double callback crossing
Description
Error message, a double zero-crossing happened, often during training a NeuralFMU.
Example
Double callback crossing floating pointer reducer errored. Report this issue.
Reason
This could be, because the event inside of a NeuralFMU can't be located (often when using Zygote).
Fix
- Try to increase the root search interpolation points, this is computational expensive for FMUs with many events- and event-indicators. This can be done using
fmu.executionConfig.rootSearchInterpolationPoints = 100(default value is10).