Re: [sumo-user] SUMO crash when using predefined routes and save state

[Jakob Erdmann <namdre.sumo@xxxxxxxxx>]

Hello,

We currently have no systematic tests for loading a state file with different input route files though we have used this as feature in the past to enable long running simulations with route files that change over time.

To get flows to work you really need to re-load the ones that were part of the original state-saving simulation (https://github.com/eclipse/sumo/issues/7471).

My first recommendation would be to use sumo version 1.8.0 to make sure you're not hitting any old bugs. The next thing would be to to prepare a minimal failing example and open up an issue on github.

As a minimum requirement, sumo should give a helpful error message on unsupported input instead of crashing so I would like to fix this.

regards,

Jakob

Am Di., 15. Dez. 2020 um 13:52 Uhr schrieb Theo <cabannes@xxxxxxxxxx>:

Hi,

I am encountering a weird issue when I am using both save state and
predefined routes.

I am trying to run a simulation with sumo --routes
'predefined_routes.xml,routes.xml' --load-state='save_state.xml' and
--load-state.offset='3600'.
The simulation failed after the loading is done ('Loading done.' is logged
but 'Simulation version 1.1.0 started with time: 0.00' is not logged and the
job fails).
The failure does not give any clue on the error.

Predefined_routes.xml looks like:
<routes>
  <route id='0x1/0x4_0' edges='0x1 0x2 0x3 0x4' />
</routes>
Routes.xml looks like:
<routes>
  <vehicle id="id_1" depart="0">
    <routeDistribution>
      <route probability="1" refId="0x1/0x4_0" />
    </routeDistribution>
  </vehicle>
</routes>
and save_state.xml is the output of another simulation with save state and
with different input files. As I am using relative time, the save time has
an offset with the demand of 1 hour.

However, I can run sumo --routes 'predefined_routes.xml,routes.xml'.

And I can also run sumo --routes 'routes_bis.xml'
--load-state='save_state.xml' and --load-state.offset='3600'
with routes_bis.xml looks like:
<routes>
  <vehicle id="id_1" depart="0">
    <route id='0x1/0x4_0' edges='0x1 0x2 0x3 0x4' />
  </vehicle>
</routes>

Also I was not successful on replicating the issue on a benchmark example
where I manually created the save_state.xml file.
I wonder what the problem can be, and I wonder if I should 'start the
simulation with the same input files that were used when saving the state
file and set option --begin to the time when the state was saved.'

I am not sure how to debug this issue. Do you have any clue?

Thank you a lot!



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