Chorba: A novel CRC32 implementation (2024)

URL: arxiv.org
6 comments

News to me, but a guy named Sam Russell came up with a new software only CRC32 algorithm that is competitive with hardware accelerated implementations. It's a surprisingly elegant solution.

Anyone can replicate the results? In any case, works like this give me moments of epiphany when I start to believe the humanity is not totally lost.

What are the units on the vertical axes for figures 1 and 2? I might have guessed seconds per TiB but the braiding line doesn't seem to match what's in figure 3.

In Spain, "chorba" is very informal slang for "gal" [0]. Not vulgar, just very informal vernacular.

[0] https://dle.rae.es/chorbo

All this talk of soup making me wonder if these are Arabic/ME derivatives.

Then again there are like 10 different ways to refer to soup in the various dialects.

The wikipedia article traces it to Persian, which formed it as a compound of words from different East Iranian languages. So you are on the money with Middle Eastern. From there it spread to the Balkan via Ottoman Turkish, and also from Persian to dialectal Arabic, which would explain the occurrences in Northern Africa, and maybe even Spain

> Dedication

> This implementation is named after the Serbian singer Bora Đorđević (also known as Bora Čorba) who was born in 1952 and died in 2024. His birth year matches the number of the GZIP standard RFC 1952 that describes a common CRC32 implementation, and the original proof of concept for this method used the polynomial x21 +x15 + x14 + x11 + x10 + x7 + x3 which is x1952×8 mod G(x).

That is indeed dedication.