Altair RISE

A program to recognize and reward our most engaged community members

Nominate Yourself Now!

Error when using "Retain State"

When I run it ('Error_Retain_State.vsm') only once or using 'Auto Restart', it can run successfully. However, if I further choose the 'Retain State', the model will produce an error called 'CVode-- Trouble interpolating at...'.

Can someone tell me why this error occurs? It seems a very simple example (only a variable and an integratrator) yet the error still occurs. Please see attached Vissim file.

<?xml version="1.0" encoding="UTF-8"?>

Unable to find an attachment - read this blog

Find more posts tagged with

Altair Embed

English

Accepted answers

All comments

Ric_22025

Hi Tom_abc

Did you purposely set the integration type to BDF? the error you are seeing is related to the settings you've chosen for BDF. Try running your model with RK2 or RK4 and you should see the correct behavior with retain state.

Ric

Tom_abc

Yes I purposely chose the BDF method for the model. Thank you Ric, it now have no error message if we chose other methods. So does it means that we cannot 'retain state' if we use BDF method?