Speeding up string search 128x by using SIMD intrinsics in Rust
Speeding up string search 128x by using SIMD intrinsics in Rust
A response to the blog post "{n} times faster than C". Our final program achieved a speedup of 128x (36 GiB/s throughput) by reformulating the problem and leveraging SIMD intrinsics.
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The title is extremely misleading. They're comparing a Rust program using SIMD intrinsics to a Rust program which doesn't, without even using auto vectorization to let the driver look for SIMD opportunities.
This is a good example of why SIMD is useful and how fast it can be, but it is not an example of how Rust is faster than C or how humans are smarter than compilers. It doesn't even have a C reference source to compare to at all.
The link to the original post had the original code referenced, it seems, and extremely misleading is a bit strong to me..
I'm still boggled by just using idiomatic rust iterators giving multiple times performance. Then it quickly gets too golfy for real life, imo
This post seems to have taken the title from a previous post that this is built upon. So that is probably why the title gets a bit confusing when viewed standalone.