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Synchronization of 2 or more nodes?

asked 2012-07-12 10:39:48 -0600

abdullah
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updated 2012-07-13 06:23:22 -0600

Hi,

Is it possible that we can start all nodes in launch file without any delay. Because In my case I am running 3 robots. I am starting nodes for these robots in a launch file. Here I have a problem that every time when I start these nodes, robots do not start moving at once.

Can anyone please guide me that how I can start nodes at the same time?

Thanks

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answered 2012-07-13 07:37:27 -0600

Dan Lazewatsky
9115 ●79 ●103 ●160 http://dan.lazewatsky.com/

roslaunch does not provide any guarantees about timing or ordering. If you need to do synchronization of your nodes, you will probably have to add synchronization code to the nodes themselves.

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It is not really a matter of roslaunch not providing this, it is just plainly impossible to achieve a perfect synchronization between three independent processes with the kind of scheduler we have on a standard Linux ;)

Thomas ( 2012-07-13 09:07:22 -0600 )edit

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Asked: 2012-07-12 10:39:48 -0600

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Last updated: Jul 13 '12

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Synchronization of 2 or more nodes?