3 ms·

Go for it!

• londons_explore 3y ago
  You nerd sniper you! But more seriously, the JVM's support for vector intrinsics is very basic right now, and I think I'd spend far more time battling the JVM to output the code I want it to output than is fun. Java just isn't the right language if you need to superoptimize stuff. Theoretically all of the above is super simple SIMD stuff, but I have a suspicion that SIMD scatter/gather (needed for the state lookup table) isn't implemented.
  • switchbak 3y ago
    If you really want to nerd snipe, write an optimized version in a non-JVM language to compare to the fastest Java one. But that's kind of boring anyway, we've seen this play out a thousand times. I still appreciate the intention of seeing how far we can squeeze performance of modern Java+JVM though. Too bad very few folks have the freedom to apply that at their day jobs though.
  • anonymoushn 3y ago
    It sounds like you're unfamiliar with vectorized string processing tasks, so you could surely learn a lot by working on an implementation of the proposed approach. I think it's fine to make it in C++ and then port to Java. For more such tasks you could go to highload.fun.