https://sumo.dlr.de/docs/Simulation/SaveAndLoad.html

Am Di., 8. Sept. 2020 um 09:52 Uhr schrieb Jane Cheung <
[email protected]>:

> Could SUMO realize the function saving and loading simulation state?
>
> Appreciated!
>
> Jane
>
> On Tue, Sep 8, 2020 at 1:27 PM Jakob Erdmann <[email protected]>
> wrote:
>
>> When saving and loading simulation state, the rerouting period for each
>> vehicle is restored as well so you cannot use this to reset the values.
>> However, you can set a new value for --routing-algorithm when loading
>> state.
>>
>> Am Di., 8. Sept. 2020 um 05:09 Uhr schrieb Jane Cheung <
>> [email protected]>:
>>
>>> Maria,
>>> Thanks for your reply!
>>> If I have 3000000 vehicles in my simulation scenario, the suggested
>>> Traci command is going to set a parameter for each vehicle, like
>>>
>>>
>>>    - use Traci to find a list of vehicles is running and are going to
>>>    insert in the simulation,
>>>    - set a new rerouting period for these vehicles.
>>>    -
>>>
>>> I am wondering, is it a time-consuming one?
>>>
>>> Are there some other methods I could do it quickly and easily?
>>>
>>>
>>> Best regards,
>>>
>>> Jane
>>>
>>>
>>> On Tue, Sep 8, 2020 at 3:26 AM <[email protected]> wrote:
>>>
>>>> Hi Jane,
>>>>
>>>>
>>>>
>>>> I think you could do it using Traci. You can start the simulation with
>>>> high values for “device.rerouting.period” and “device.rerouting.pre-period”
>>>> to avoid rerouting vehicles before time 1800 s. At simulation time 1800s
>>>> you can change the “device.rerouting.period” value of specific vehicles
>>>> with the command:
>>>>
>>>>
>>>>
>>>> *traci.vehicle.setParameter("**vehicle ID**",
>>>> "device.rerouting.period", "**period**")*
>>>>
>>>>
>>>>
>>>> See https://sumo.dlr.de/docs/Demand/Automatic_Routing.html#traci and
>>>> https://sumo.dlr.de/docs/TraCI.html for more information.
>>>>
>>>>
>>>>
>>>> Sumo can generate different types of measures, in the following link
>>>> you can find information about them
>>>> https://sumo.dlr.de/docs/Simulation/Output.html.
>>>>
>>>>
>>>>
>>>> Regards,
>>>>
>>>> Giuliana
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> *From:* [email protected] [mailto:
>>>> [email protected]] *On Behalf Of *Jane Cheung
>>>> *Sent:* Montag, 7. September 2020 19:55
>>>> *To:* Sumo project User discussions
>>>> *Subject:* [sumo-user] save simulation state
>>>>
>>>>
>>>>
>>>> Dear all,
>>>>
>>>> If I have a simulation with 3600s,
>>>>
>>>> the configuration file is below :
>>>>
>>>> -----------------------------------------------------------------
>>>>
>>>>
>>>>     <input>
>>>>         <net-file value="mycase.net.xml"/>
>>>>         <route-files value="mycase.rou.xml"/>
>>>>     </input>
>>>>
>>>>     <output>
>>>>         <summary-output value="output\mycase.summary.xml"/>
>>>>         <tripinfo-output value="output\mycase.tripinfo.xml"/>
>>>> <tripinfo-output.write-unfinished value="true"/>
>>>>     </output>
>>>>
>>>>     <time>
>>>>        <begin value="0"/>
>>>>        <end value="36000"/>
>>>>     </time>
>>>>
>>>>     <routing>
>>>>         <device.rerouting.probability value="1"/>
>>>>         <device.rerouting.period value="300"/>
>>>>         <device.rerouting.pre-period value="300"/>
>>>>     </routing>
>>>>
>>>> <processing>
>>>>        <ignore-junction-blocker value="20"/>
>>>>        <time-to-teleport value="75600"/>
>>>>        <max-depart-delay value="3600"/>
>>>>        <routing-algorithm value="dijkstra"/>
>>>>     </processing>
>>>>
>>>>
>>>>
>>>> -----------------------------------------------------------------
>>>>
>>>>
>>>>
>>>> I want to evaluate different rerouting algorithms in SUMOs from 1800s
>>>> to the 3600s.  In order to do that, I hope the traffic condition from
>>>> 0-1800s in different tests are the same, and the rerouting-device in each
>>>> vehicle can only work from the 1800s to 3600s
>>>>
>>>> Could I save the simulation state at 1800s and try different
>>>> simulations from 1800-3600 with different route algorithms?
>>>>
>>>> Could I save one simulation state of SUMO? Or Could I use some other
>>>> ways to realize my purpose?
>>>>
>>>>
>>>>
>>>> Appreciated in advance, and looking forward to getting your suggestions.
>>>>
>>>>
>>>>
>>>> Best regards,
>>>>
>>>> Jane
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