Re: Webot contest and random results

Hi,

Sorry for my late response...
The problems you encounter are due to the asynchrounous mode of 
operation for robot. The simulator doesn't wait for the robot and runs 
as fast as possible. In order to run your simulation in the same 
conditions as the contest ones, I would recommand you to check the "run 
real time" option in the Webots preferences. This leaves more time to 
the controller process and make the simulator wait a little bit.

We are forced to use the asynchronized mode for the contest, otherwise 
some robot controllers could take too much CPU time leading to endless 
simulations.

-Olivier

[email protected] wrote:

>Hi
>
>We just watched the first match of our robot and noticed that it behaves very 
>differently online and when using the webots evaluation (note it just begins to 
>walk at every match start, using exactly the same commands):
>
>- starting the webots program: the robot falls most of the time
>- pushing the 'revert' button (in real time mode): the robot falls in 1 of 20 
>tries
>- running the simulation step by step: the robot never falls down
>- webots contest: the robot fell in 3 of 3 tries
>
>it seems that the simulation works differently depending on the resources 
>available (as a test, we started playing mp3 files while running the 
>simulation: this caused an instant fall of the robot).
>
>Unfortunately, this makes it almost impossible to predict the performance of a 
>new controller :( we think the step-by-step-performance should determine the 
>outcome of a match, as this should be independent of system resources. 
>Uploading a new controller every day, with new settings, is not an option as 
>this might take years to develop valid locomotion
>
>the Mummahad_Ai coaching team
>
>P.S: we have added a waiting time at match start now. not a pleasing solution 
>(actually, tomorrow we're going to see if it's a solution at all...)
>  
>



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