Toots for xoofx@mastodon.social account

Written by Alexandre Mutel on 2025-02-02 at 10:20

Don't know why I'm realizing this only today, but #fosdem is an impressive OSS event with its 1102 presentations https://fosdem.org/2025/schedule/events/

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2025-01-31 at 21:40

Rider 2025.1 is coming with mixed-mode debugging https://blog.jetbrains.com/dotnet/2025/01/08/rider-2025-1-roadmap/#mixed-mode-debugging 🥳

That plus hopefully, later this year (or next?), a rework of the debugging windows to use a table instead of unaligned variables and I could start to switch from VS+R#! Hope that the debugger will allow to also investigate raw/managed memory directly and debug steps at the assembler level 🙏

[#]dotnet

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2025-01-31 at 14:01

I've been often explaining around me the clear distinction to make between complex & complicated. Asking ChatGPT to formulate this with a few catchy phrases and it's pretty damn good:

• “Complicated is a puzzle; complex is a mystery.”

• “Complicated problems require effort; complex problems require insight.”

• “Complicated can be solved, complexity must be navigated.”

• “A complicated system has rules; a complex system writes its own.”

• “Complicated things break down; complex things evolve.”

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2025-01-30 at 16:38

Great, now I can monthly contribute to https://opencollective.com/alpinelinux 🥳

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2025-01-29 at 20:44

Making some progress of my ARM64 assembler, generating automatically all encoding of instructions (still some operands not handled) and I can directly write an assembler line in C# and gets everything resolved to a const! ✨

=> View attached media

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2025-01-26 at 08:56

Finally, 10468 tests passing for my ARM 64 disassembler - I'm reusing part of Capstone unit tests, which were based on LLVM-MC tests 🥳

The decoding of operands was a lot more manual than I thought, as the ARM XML specs don't formalize this but via a free form text, which makes it super laborious. There are also several instructions that require manual dispatching based on conditions. And it doesn't even cover SME/SVE/SVE2 (it doubles everything!)

Anyway, next step: the assembler! 🚀

[#]dotnet

=> View attached media

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2025-01-18 at 11:31

I'm getting there with my ARM64 assembler/disassembler .NET lib, zero allocation for the decoding and quite fast! 🚀

Not visible in the screenshot, but there is a significant amount of work involved to get that out! 😅

Still plenty of work remaining for the disasm to be fully complete, handling other operands (e.g. label, extend...), prettify them when in groups (e.g. labels) ...etc. 🤯

And then, generate a strongly typed assembler API 💻

Should be pretty cool once finished! 😎

[#]dotnet #csharp

=> View attached media

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2025-01-16 at 15:29

It's a kind of a weird marketing moment for the Switch 2 to just get out with a trailer about mainly its formfactor, and nothing else. So much wait from the market for this? 🤔

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2025-01-10 at 19:26

@nietras I'm waiting for the Phi-4 ONNX version to be available (tried optimum to convert and failed installing it). I could go with LLamaSharp but dunno if it is worth it. With which runtime representation do you mostly work with these days?

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2025-01-09 at 18:22

Me, last week: oh oh, detecting ARM64 instruction from a plain uint is easy, the rest should be similar. 😎

Me, this week: shit, automating the decoding of operands is way trickier than I expected 🤯

Firstly, because operands are not formalized in the ARM64 XML specs apart through some pseudo-structured text that you have to parse.

Secondly, the encoding of some operands can be super convoluted.

Hope I'll have enough patience to finish this. I thought that I could do it quicker & move on 😨

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2025-01-07 at 21:54

Fuck all the enablers of Trump and especially the billionaires 🤬

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2025-01-07 at 14:06

I'm pretty excited by the NVIDIA DIGITS GB10 Gracewell https://nvidianews.nvidia.com/news/nvidia-puts-grace-blackwell-on-every-desk-and-at-every-ai-developers-fingertips for doing neural networks experiment at scale, right from home, but that form factor is so ugly and ridiculous. It looks like a Luxury/LVMH GPU box while I just really need a dev kit 😒

=> View attached media

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2025-01-04 at 08:13

First version of the ARM64 ISA decoding is working! 🥳

4241+ instructions (including SVE/SVE2/SME...etc.) decoded with an automatically generated decoding table that is less than 50KB. It might be the most compact decoding table for ARM64 ISA!

Decoding speed is 10M/s, dunno if it is fast enough or not, will check that later

[#]dotnet

=> View attached media

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2024-12-30 at 20:26

In the middle of my holidays 🎄

I'm playing with the idea to build a C# library to assemble/disassemble ARM64 ISA with hopefully 99% of it generated from ARM ISA XML specifications. 🤖

But the weirdest part is that... I'm not entirely sure why I want to build that 😁

At least, I feel the challenge is interesting 🤔

We will see! ☺️

[#]dotnet #csharp

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2024-12-27 at 16:37

When travelling with my laptop, I'm always feeling inefficient and unproductive when coding on it, missing double big screens, a proper mouse and keyboard. It's probably a matter of getting use to it, but I can't 🙂

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2024-12-21 at 06:50

Not completely surprising in this post about "Performance of llama.cpp on Snapdragon X Elite/Plus" https://github.com/ggerganov/llama.cpp/discussions/8273#discussioncomment-11356628

This NPU seems to run significantly slower even than its CPU. Only 1.5% of the claimed 45 TOPS performance. They should be sued for false advertising - like probably many others. 😒

=> View attached media

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2024-12-08 at 20:57

Spent the weekend trying to make EventSource/EventPipe working with NativeAOT on macOS, but failed, starting a session with a provider doesn't enable the EventSource... I will have to create a simpler repro, try also on Linux and log an issue otherwise. Really not happy with the energy lost to make it work 😒

[#]dotnet

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2024-12-04 at 06:43

@ncopa hey, I have a question regarding alpine: are frame pointers enforced by apkbuild? (Or not removed basically)

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2024-12-01 at 17:24

In another news, I'm starting to add support for (native callstacks) profiling to ultra on macOS. I have to say that Windows with its ETW Kernel session is so much better equipped than macOS. It's absurd that I have to do my own Thread.Sleep/suspend/stackwalk/resume + dylib injection to get such basic stuffs. 😒

At least I'm going to be able to rely on .NET (Core) tracing infrastructure which is pretty damn good for collecting data from a remote process. 🚀

[#]dotnet

=> More informations about this toot | View the thread

Written by Alexandre Mutel on 2024-12-01 at 17:18

CTRL+←/→ vs Command+←/→

or CTRL+X/C/V vs Command+X/C/V

are killing my productivity whenever I have to switch between Windows and macOS, I don't know if there are many folks constantly switching during the day between these OS, but it is one of these annoyances that I find super hard and I understand why one would stick to one OS for good for daily use. Maybe that's just because I'm getting old. ☺️

In the end, I have to develop on Windows, and git sync my work to mac to test it! 😁

=> More informations about this toot | View the thread

=> This profile with reblog | Go to xoofx@mastodon.social account