If you can manage to use the python bindings for traci, this allows for
logging of all traci calls that were sent to sumo, making it much easier to
reproduce problems:
https://sumo.dlr.de/docs/TraCI/Interfacing_TraCI_from_Python.html#generating_a_log_of_all_traci_commands
.
However, if you are managing to crash sumo with moveToXY calls, then it may
be enough to provide the network file and a sequence of coordinates that
you used.

Am Di., 28. Feb. 2023 um 12:15 Uhr schrieb Ruud van Gaal <
[email protected]>:

> Hi Jakob,
>
> Flushing the general log file will cause stutters; we tend to avoid that
> here and write the log in a separate thread actually to keep things running
> in realtime. We do have a LogSynchronous() call which we can use in case
> severe crashes cause the log thread to miss that latest log message you are
> probably most interested in. For the error-log default explicit flushes may
> make more sense since you shouldn't normally get errors when things are
> ready for production.
>
> Thanks for the tip on running SUMO instead of the GUI, hadn't thought of
> that.
>
> There was no content in the log file (it was created but stayed at 0
> bytes) although the simulation did start and ran for a little while. Later
> on, I saw an exception about a setRouteID() that failed, probably due to a
> funny location (I'm steering the human-controlled vehicle off the road
> sometimes with MoveToXy() and SetSpeed()). That might be a thing for later;
> any Vehicle::MoveToXy() call with KeepRoute other than 0 (so 2, 4, 6) will
> crash SUMO here quite quickly even when hitting the sidewalk (so close to
> the route's edge). Unfortunately a simple reproduction case is difficult
> since I have multiple applications that work in concert in our simulation.
>
> Thanks!
> Ruud
>
>
> On Tue, Feb 28, 2023 at 11:54 AM Jakob Erdmann <[email protected]>
> wrote:
>
>> Hi,
>> there is currently no option for flushing the log file (though maybe this
>> should be the default anyway:
>> https://github.com/eclipse/sumo/issues/12714)
>> stdout and stderr are supposed to flush after every simulation step. So
>> instead of using sumo-gui you could run sumo where the log goes to
>> stdout/stderr
>> However, the log file is rarely enough to diagnose a gui crash anyway. A
>> reproducible example is needed instead.
>> If there is no log file at all despite running with verbose, then
>> possibly the simulation failed to start properly.
>>
>>
>>
>> Am Di., 28. Feb. 2023 um 10:16 Uhr schrieb Ruud van Gaal <
>> [email protected]>:
>>
>>> Hi,
>>>
>>> I'm investigating an issue on Windows where SUMO-GUI crashes at some
>>> point. I don't get a log file though when it crashes. I run with these
>>> arguments:
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> *Starting SUMO with these arguments:  sumo-gui  -c
>>> cruden_world_2.sumocfg  --step-length  0.100000  --time-to-teleport  -1
>>> --lanechange.duration  2.000000  --verbose  true  --log  sumo_lastrun.log
>>> --start  --quit-on-end*
>>>
>>> When killing sumo-gui for example from the TaskManager, the
>>> 'sumo_lastrun.log' file doesn't appear; so any last-minute exception that
>>> might have occurred is lost. When closing normally, the log file is written
>>> correctly.
>>>
>>> Is there a mode or argument to enforce a flush of the log file after
>>> each message for example?
>>>
>>> Thanks,
>>> Ruud
>>>
>>> _______________________________________________
>>> sumo-user mailing list
>>> [email protected]
>>> To unsubscribe from this list, visit
>>> https://www.eclipse.org/mailman/listinfo/sumo-user
>>>
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