Re:432-Core RISC-V European Processor Designed for Use in Sp...
by xupybd on Tuesday May 09, 2023 @06:15AM
(#35872123)
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?
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Re:432-Core RISC-V European Processor Designed for Use in Sp...
by 2OEH8eoCRo0 on Tuesday May 09, 2023 @07:08AM
(#35872537)
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...
Re:432-Core RISC-V European Processor Designed for Use in Sp...
by sjburt on Tuesday May 09, 2023 @09:52AM
(#35874319)
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_A...
Re:432-Core RISC-V European Processor Designed for Use in Sp...
by Symmetry on Tuesday May 09, 2023 @11:29AM
(#35875865)
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
Re:432-Core RISC-V European Processor Designed for Use in Sp...
by EuropeOverlords on Tuesday May 09, 2023 @08:36AM
(#35873434)
joke : They do not have to care about error every 67 billionth callculation that much, AI is hallucinating enough.