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Cake day: June 10th, 2023

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  • That’s exactly how you guesstimate CPU performance. It obviously won’t be accurate to real life use cases, but you don’t necessarily need benchmarks to get a ballpark comparison of raw performance. The standard comparison is FLOPS, floating point operations per second. Yes different architectures have different instruction sets, but they’re all relatively similar especially for basic arithmetic. It breaks down with more complex computations, but there’s only so many ways to add two numbers together.









  • Funnily enough, the Rivian CEO talks about exactly that in this interview

    In that scenario, we would be using one ECU to do everything I just described. In this case, it’s a much larger computer, but one computer. It’s a massive simplification for how we think about software development and also drives a lot of cost out of the vehicle because instead of 70 to 80 little boxes — little computer boxes with wiring and connectors and everything else — we have, in our case, seven.

    So when one small thing stops working, you now have to buy their proprietary, expensive ECU instead of a cheap little microcontroller.