4 ms·

They didn't talk about radiation hardening. Is this chip safe to use in space? I thought a chip that dense would be vulnerable to cosmic rays?

• 2OEH8eoCRo0 3y ago
  https://en.wikipedia.org/wiki/Ingenuity_(helicopter) https://en.wikipedia.org/wiki/Ingenuity_(helicopter) > Ingenuity, also called Ginny, is a small robotic helicopter operating on Mars. > The helicopter uses a Qualcomm Snapdragon 801 processor Edit: There is a way to detect and recover from these types of errors. They appear to be able to run the computation on a number of cores with a voter to check for consistency. Slide 41 (PDF warning): http://microelectronics.esa.int/riscv/rvws2022/presentations/05-ESA_PULP.pdf http://microelectronics.esa.int/riscv/rvws2022/presentations...
  • sjburt 3y ago
    Ingenuity had a Snapdragon, but there was also a redundant pair of arm r5f microcontrollers (which are also lockstepped dual-core processors, so quadruple redundancy) where the flight controllers were, and a rad-tolerant FPGA (proasic) that watchdogged everything else. The Snapdragon was used for less critical code such as imaging and comms. https://rotorcraft.arc.nasa.gov/Publications/files/Balaram_AIAA2018_0023.pdf https://rotorcraft.arc.nasa.gov/Publications/files/Balaram_A...
    • Symmetry 3y ago
      Also, thanks to the thin atmosphere and lack of a magnetic field Mars's surface is about 50 times more radioactive than the Earth's, but it's still no as bad as space out past the Van Allen belts
• EuropeOverlords 3y ago
  joke : They do not have to care about error every 67 billionth callculation that much, AI is hallucinating enough.
• _a_a_a_ 3y ago
  Lord Almighty, take a guess whether a space agency designing a chip for use in space might consider these things.
  • xupybd 3y ago
    I'm asking for more information on how it's going to operate in a high radiation environment. I'm not assuming they haven't considered the problem.