see https://sumo.dlr.de/docs/Simulation/Basic_Definition.html#defining_the_time_step_length
Am Di., 2. Feb. 2021 um 00:49 Uhr schrieb . Abdullah <[email protected]>: > Thank you for the explanation. If the simulation step-length doesn't > determine the simulation speed, then what is it used for? What is the > purpose of the step-length and how happens during 1 traci.simulationStep()? > > On Mon, Feb 1, 2021 at 12:21 AM Jakob Erdmann <[email protected]> > wrote: > >> If you need to start a fresh simulation, you can use traci.load([ ]) >> which reloads the network and also allows to set all simulation options. >> getDeltaT is not suited for measing simulation speed. It simply returns >> the step-length that was set via options. >> To measure execution speed you could take the average wall-clock time >> over multiple calls to traci.simulationStep. >> >> regards, >> Jakob >> >> Am So., 31. Jan. 2021 um 20:14 Uhr schrieb . Abdullah <[email protected]>: >> >>> Hi, >>> >>> thank you for the answer. Looking at traci.simulation.loadState, it only >>> takes a filename, is there a way to specify these options (["--step-length", >>> "0.5", '--save-state.rng', "--step-method.ballistic", "--no-step-log", >>> "--no-warnings"], port=port) like I can for traci.start >>> >>> Also, when I measure the time across traci.simulation.getDeltaT(), it >>> takes from 0 to 0.001 seconds rather than 0.5 seconds. So, I am a bit >>> confused about how long it actually takes for sumo to perform one >>> simulation step? >>> >>> On Sun, Jan 31, 2021 at 5:44 AM Jakob Erdmann <[email protected]> >>> wrote: >>> >>>> Hello, >>>> the delay most likely comes from loading the network and setting up all >>>> the necessary simulation objects in memory. >>>> If you need to start a simulation repeatedly, you can avoid the >>>> overhead of network loading by calling traci.simulation.saveState and >>>> traci.simulation.loadState >>>> >>>> regards, >>>> Jakob >>>> >>>> Am Sa., 30. Jan. 2021 um 23:15 Uhr schrieb . Abdullah <[email protected] >>>> >: >>>> >>>>> Hi all, >>>>> >>>>> I have two codes below. In traci_demo_v1, I have a loop that just >>>>> starts and closes a simulation and prints the time taken to do so. In >>>>> windows, it takes around 0.5 secs but when I check my task manager (Memory >>>>> Usage.PNG file attached below) I see only some memory use of 35MB and no >>>>> disk usage. So I was wondering why it takes so long to start or load a >>>>> state (without gui)? Is there any way to reduce this time? Also, in >>>>> traci_demo_v2 I have a simulation that runs for sometime with step-length >>>>> 0.5. But when I measure the time across traci.simulation.getDeltaT(), it >>>>> takes from 0 to 0.001 seconds rather than 0.5 seconds. So, I am a bit >>>>> confused about how long it actually takes for sumo to perform one >>>>> simulation step? >>>>> >>>>> I am using SUMO v1.7. >>>>> >>>>> >>>>> -- >>>>> Thank you. >>>>> Abdullah >>>>> _______________________________________________ >>>>> sumo-user mailing list >>>>> [email protected] >>>>> To unsubscribe from this list, visit >>>>> https://www.eclipse.org/mailman/listinfo/sumo-user >>>>> >>>> _______________________________________________ >>>> sumo-user mailing list >>>> [email protected] >>>> To unsubscribe from this list, visit >>>> https://www.eclipse.org/mailman/listinfo/sumo-user >>>> >>> >>> >>> -- >>> Thank you. >>> Abdullah >>> _______________________________________________ >>> sumo-user mailing list >>> [email protected] >>> To unsubscribe from this list, visit >>> https://www.eclipse.org/mailman/listinfo/sumo-user >>> >> _______________________________________________ >> sumo-user mailing list >> [email protected] >> To unsubscribe from this list, visit >> https://www.eclipse.org/mailman/listinfo/sumo-user >> > > > -- > Thank you. > Abdullah > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user >
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