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More information can be found here.

HLC/NUC Monitoring

The section HLCs online shows you how many NUCs are currently online. This can be useful for debugging or to find out on how many NUCs you can remotely deploy your program before, for the rest of your selected vehicles, the computation for those takes place locally. You can expand the section by clicking on the little triangle, thus revealing the IDs of the HLCs which are currently online.

The following section Reboot HLCs allows you to reboot HLCs of your choice. You again need to click on the little triangle. An input will appear:

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You can find out what to enter here if you hover over the input. You can either enter a comma-separated list that the LCC is supposed to remotely reboot (you can check if that worked by examining the online HLCs simultaneously), or you can enter a '*' to tell the LCC to reboot all currently connected NUCsMore information can be found here.

VehicleState age

This is roughly the duration since the last VehicleState Message was received.

The when the LCC receives a new message it saves the current time last_state_msg = t_now  and in the UI it displays last_state_msg - t_now . Thus the shown VehicleState age does not necissarily have to correspond with the actual age of the information that the LCC has about the vehicle this would be vehicleState.header().create_stamp() - t_now .