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nviennot

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Measuring CPU core-to-core latency

github.com
319 points·by nviennot·4 năm trước·90 comments

An STM32 emulator written in Rust for 3D printers

github.com
113 points·by nviennot·4 năm trước·21 comments

Reverse engineering of the Anycubic Mono 4K 3D printer

github.com
1 points·by nviennot·4 năm trước·0 comments

comments

nviennot
·3 năm trước·discuss
After trying to like rkyv, I came to the conclusion that the serialization/deserializarion API is not ergonomic due to the heavy use of generics in their API.

I think we can do better.
nviennot
·3 năm trước·discuss
This landing page is terrible.

There's a bunch of professional photos of the camera, two with a hand, then two next to a pair of pants, then on a handbag.

Only after all that it is shown on a laptop, where it is actually used! It should be the first image. Also, there's so little comparison between built-in webcam image and their offerings.

Then there's a huge video with a bead sliding on the rope holding the camera. It seems that the marketers are just masturbating with the high-quality photography they made. It's not actually useful.

This is not a problem users were like "I don't know how I can go from a meeting to another with my camera".

Also, their "Have you ever wished you could instantly mute yourself in a video call without having to look for that elusive mic button? Well, now you can have it." -- this is a solved problem with mute buttons on F1/F2 or whatever your laptop does. Or at least, current mute solutions are not harder than "I'm bring my own webcam, plug it in, configure the audio source, position it correctly on the top of my screen"

This landing page is out-of-touch with actual problems users may have.
nviennot
·4 năm trước·discuss
Added, thanks
nviennot
·4 năm trước·discuss
So what did you do to get the most performance out of the system? pin the threads to specific CPUs?
nviennot
·4 năm trước·discuss
It would be nice to have another bench from the Alder Lake, so we can validate the results
nviennot
·4 năm trước·discuss
The data seems problematic, there's a few 0's here and there and some strange noise in the rest. Increase the number of samples / iterations with `core-to-core-latency 30000 1000 --csv > output.csv`
nviennot
·4 năm trước·discuss
Okay, I've added a file
nviennot
·4 năm trước·discuss
Very nice
nviennot
·4 năm trước·discuss
It'd be great if you could provide the output.csv actually :D

I think there's a CLI tool for pastebin