BRN brainchip holdings ltd

2021 BRN Discussion, page-5967

  1. 6,614 Posts.
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    Hi MC,

    Well spotted.

    Glad to see you spotted my deliberate mistake - just shows you can't believe everything you read.

    I was drawing my information from slide 4 of the presentation I posted in my first reply to you.

    https://d1io3yog0oux5.cloudfront.net/_e6768070d76a9b211503e7500d571de0/brainchipinc/db/236/1703/pdf/BrainChip+Linley+Akida+Presentation_v5.pdf Slide 4

    which was dated 2019. I guess that we have now found there are some instances when converting CNN to SNN where we need 8-bit weights to maintain sufficient accuracy. Changing from 4-bits to 8 bits is equivalent to the difference between slicing something into 15 pieces and slicing it into 255 pieces.

    We still use 4-bit activations.

    I imagine there would probably be a trade off of speed and power for the increased accuracy when using 8-bit weights.

    Changing from 4-bit weights to 8-bit weights would have required a significant redraft of the Akida layout and would have contributed to the 12 month delay.

    ARM is still 20th century von Neumann computing.


 
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