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HW and SW Redundancy in HW3

Discussion in 'Technical' started by GolanB, Apr 8, 2019.

  1. GolanB

    GolanB Supporting Member

    Joined:
    Sep 22, 2018
    Messages:
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    Location:
    NYC
    Today in a tweet, Elon Musk eluded to hardware and software redundancy coming.

    Screen Shot 2019-04-08 at 7.58.28 PM.png

    He then further clarified a question about how this will work:

    Screen Shot 2019-04-08 at 7.58.19 PM.png

    A few questions come up as I think about this:

    1. Will each SoC run identical versions of the OS and NN?

    - If so, will this potentially open them up to simultaneous crashes due to the identical bugs?
    - If not, could this provide additional resiliency?
    - Will Tesla possibly operate two NN models simultaneously?
    - How will Tesla handle conflicting data and/or split brain?

    2. Since redundancy is going to play a more significant role as autonomy increases, will Tesla eventually install additional radar sensor, or is the plan to fall-back on cameras?

    3. How will redundancy affect uptime targets? Will we be able to achieve five-9's of reliability?
     
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