1brc
1brc
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1brc
1brc
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The One Billion Row Challenge in CUDA: from 17 minutes to 17 seconds
There are some good ideas for this type of problem here: https://github.com/dannyvankooten/1brc
After you deal with parsing and hashes, basically you are IO limited so mmap helps. A reasonable guess is that even for the optimal CUDA implementation, because there is no compute to speak of other than a hashmap, the starting of kernels and transfer of data to the GPU would likely add a noticeable bottleneck and make the optimal CUDA code slower than this pure C code.
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The One Billion Row Challenge in Go: from 1m45s to 4s in nine solutions
c dominates every other language again...https://github.com/dannyvankooten/1brc#submitting
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The One Billion Row Challenge
You can run the bin/create-sample program from this C implementation here: https://github.com/dannyvankooten/1brc
It’s just the city names + averages from the official repository using a normal distribution to generate 1B random rows.
What are some alternatives?
aoc - Advent of Code solutions in multiple languages
1brc - 1️⃣🐝🏎️ The One Billion Row Challenge -- A fun exploration of how quickly 1B rows from a text file can be aggregated with Java
1brc - The One Billion Row Challenge in rust.
nodejs - 1️⃣🐝🏎️ The One Billion Row Challenge with Node.js -- A fun exploration of how quickly 1B rows from a text file can be aggregated with different languages.
projects - Reference code for Boot.dev projects
1brc - 1BRC in .NET among fastest on Linux