SIMD-accelerated computer vision on a $2 microcontroller

(shraiwi.com)

35 points | by zdw 18 hours ago

3 comments

  • pjmlp 59 minutes ago
    > For its price, the ESP32-S3 is a powerhouse of a microcontroller.

    Indeed, don't forget it is more powerful than computers like this one,

    https://en.wikipedia.org/wiki/Amstrad_PC1512

    • asimeqi 1 minute ago
      That was my exact first computer with the CGA graphics, GEM Desktop, Locomotive Basic etc. All the software came in 4 360KB diskettes. The diskettes had each it's own beautiful color. There were 3 sample Basic programs that seemed to me quite advanced. One sample was a document management system. Another was a drawing program where you could draw with a mouse. Didn't know that GEM Desktop was made by Digital Reasearch. It was a very good windowing system. I believe it was based on MS-DOS. There was also a CP/M OS. So much software in only 1.2MB.
  • paaloeye 31 minutes ago
    ESP32-S3 SIMDs are super difficult to use unfortunately
    • meindnoch 25 minutes ago
      Just LLM it
      • ballmerpoint 20 minutes ago
        IME, they’re still pretty bad at getting specific implementation details of SIMD correct. The best I’ve done so far is to harness them to an actual piece of hardware and have them iterate until they see performance improvements but 1) Goodhart’s law, they tend to overfit the benchmark suite and 2) the resulting SIMD often becomes illegible.
  • peesem 54 minutes ago
    nit: 5.1MP/s to 11.2MP/s is not an increase of 220%, it's an increase of 120%. it's 2.2x faster, but percentage increase starts at 0%, not 100%. 100% faster is double, 200% faster is triple.
    • seritools 26 minutes ago
      nit²: 2.2x as fast, or 2.2 times the speed; not 2.2x faster. same issue you pointed out.

      using faster with x/times is just begging for misunderstandings