This article is 100% AI written. The data was interesting, the commentary overly verbose and hard to gain useful insights from.
I just scrolled through & read the code snippets. Interesting enough solution at end
Branchless Rust: Making a Filter 4x Faster by Removing an If
81–90 of 124 posts
Re: Branchless Rust: Making a Filter 4x Faster by Removing an If
#82Earlier quoted context omitted.
I would assume non-native speakers talk to Claude in their own language. Now I'm curious if Claude's weird quirks of speech are unique in each language or if they carry over!
I'm German but still do all my computing in English (partly out of habbit, but also because Germanized technical text is usually painful to work with because it's full of anglizisms (is that actually an English word?)).
One nice thing about English is you can just make up words with plausible etymological roots in Latin/French or Old English and often people will know what you mean. In this case though it would probably be spelled "Anglicism".
Re: Branchless Rust: Making a Filter 4x Faster by Removing an If
#83[dead]
Re: Branchless Rust: Making a Filter 4x Faster by Removing an If
#84Branchless optimization is such a clean way to squeeze out maximum performance for hot loops. Love this approach.
Re: Branchless Rust: Making a Filter 4x Faster by Removing an If
#85Earlier quoted context omitted.
I'm apparently not good at spotting it. I was put off by the overly dramatic presentation. It gets tiring that the author apparently finds this more exciting than I do, and writes like it's enthralling. I just assumed it was an excess of enthusiasm or the first experience with this kind of thing. If it's AI, I'm way behind the game noticing it.
"The smoking gun" is right there in the text ;) (but also things like "Same million floats. Same threshold. Same function."). Don't know if other models have that same specific style, but it looks very 'claude-y'. I wouldn't be surprised though if (especially) non-native speakers unconsciously start adopting the Claude writing style when they stare all day long at Claude generated text at work.
Not sure if it was added later, but there's an even more obvious sign: the top of the blog post literally says that an LLM was used to write it.
Re: Branchless Rust: Making a Filter 4x Faster by Removing an If
#86Nice post! You can do even a bit better if you're willing to use intrinsics. In particular this kind of operation is well-suited for compress-type operations, available as a first-class operation in at least AVX512, SVE and RVV; you can also emulate them reasonably quickly on NEON and AVX2. Here's an example, building on the OP's work: pub fn filter_compress(input: &[f64], threshold: f64) -> Vec { use std::arch::x86_…
Keep in mind it's UB to be:
> Executing code compiled with target features that the current thread of execution does not support
I.e. calling AVX512 on Neon architecture.
You need to wrap it in target attributes to even dream of it being safe.
Re: Branchless Rust: Making a Filter 4x Faster by Removing an If
#87Earlier quoted context omitted.
I'm apparently not good at spotting it. I was put off by the overly dramatic presentation. It gets tiring that the author apparently finds this more exciting than I do, and writes like it's enthralling. I just assumed it was an excess of enthusiasm or the first experience with this kind of thing. If it's AI, I'm way behind the game noticing it.
"The smoking gun" is right there in the text ;) (but also things like "Same million floats. Same threshold. Same function."). Don't know if other models have that same specific style, but it looks very 'claude-y'. I wouldn't be surprised though if (especially) non-native speakers unconsciously start adopting the Claude writing style when they stare all day long at Claude generated text at work.
> Don't know if other models have that same specific style
An awful lot of the open-weight models also talk in the Claude-y style. Not sure if an artefact of distilling anthropic models, or just a preponderance of slop in the training set...
Re: Branchless Rust: Making a Filter 4x Faster by Removing an If
#88Earlier quoted context omitted.
I'm German but still do all my computing in English (partly out of habbit, but also because Germanized technical text is usually painful to work with because it's full of anglizisms (is that actually an English word?)).
One nice thing about English is you can just make up words with plausible etymological roots in Latin/French or Old English and often people will know what you mean. In this case though it would probably be spelled "Anglicism".
German language: hold my beer ;)
Re: Branchless Rust: Making a Filter 4x Faster by Removing an If
#89Nice post! You can do even a bit better if you're willing to use intrinsics. In particular this kind of operation is well-suited for compress-type operations, available as a first-class operation in at least AVX512, SVE and RVV; you can also emulate them reasonably quickly on NEON and AVX2. Here's an example, building on the OP's work: pub fn filter_compress(input: &[f64], threshold: f64) -> Vec { use std::arch::x86_…
Thank you for sharing this. How would you emulate this kind of operation on avx2?
Once you have a mask of the positions you want to compress, you can generate a shuffle index vector from that mask to place the desired elements in the low part of the vector. You can expand the mask into nibble-sized indices using pext/pdep and some magic constants, then expand those nibble-sized indices into a vector of indices to use as the shuffle indices.
Re: Branchless Rust: Making a Filter 4x Faster by Removing an If
#90"the smoking gun"... Mr. AI.