Hacker News: yukIttEft

New comment by yukIttEft in "Anthropic downgraded cache TTL on March 6th"

yukIttEft — Sun, 12 Apr 2026 09:55:35 +0000

I'm currently "working" on a toy 3d Vulkan Physx thingy. It has a simple raycast vehicle and I'm trying to replace it with the PhysX5 built in one (https://nvidia-omniverse.github.io/PhysX/physx/5.6.1/docs/Ve...)

I point it to example snippets and webdocumentation but the code it gens won't work at all, not even close

Opus4.6 is a tiny bit less wrong than Codex 5.4 xhigh, but still pretty useless.

So, after reading all the success stories here and everywhere, I'm wondering if I'm holding it wrong or if it just can't solve everything yet.

New comment by yukIttEft in "Tinybox – A powerful computer for deep learning"

yukIttEft — Sun, 22 Mar 2026 07:57:35 +0000

He had a video on Youtube where he proudly gloated about how he voted for Trump in not one but two elections, how happy he is that he can now openly talk about it, how its a fresh start for US, how catastrophic Harris would have been.

Did he take down the video because of embarrassment or did he fear negative impact on his sales?

New comment by yukIttEft in "Microsoft account bugs locked me out of Notepad – Are thin clients ruining PCs?"

yukIttEft — Sun, 08 Feb 2026 09:08:30 +0000

Tried switching to Linux years ago, what brought me be back were issues with Suspend-to-disk, CPU Core parking, GPU powerefficient idle mode

Since my PC is idle most of the time, I care about idle-powerefficiency a lot.

Does stuff like this these days just work? (AMD CPU + Nvidia GPU)

New comment by yukIttEft in "Language models pack billions of concepts into 12k dimensions"

yukIttEft — Mon, 15 Sep 2025 16:37:53 +0000

newbie question: when training networks, what mechanism makes the language's concepts be (almost)orthogonal to each other?

New comment by yukIttEft in "The Effect of Noise on Sleep"

yukIttEft — Fri, 27 Jun 2025 17:14:29 +0000

I have a street in front of my bedroom and I'm wondering how well ANC earbuds work in that case. Will it be completely silent or will there still be some kind of whoosh-sound?

New comment by yukIttEft in "Denuvo Analysis"

yukIttEft — Tue, 10 Jun 2025 20:13:06 +0000

New comment by yukIttEft in "Denuvo Analysis"

yukIttEft — Tue, 10 Jun 2025 18:46:36 +0000

Wasn't aware of Alive2. Thx, I'll have look.

I had some success with https://github.com/mrphrazer/msynth But its hard to glue this to LLVM.

New comment by yukIttEft in "Denuvo Analysis"

yukIttEft — Tue, 10 Jun 2025 17:38:33 +0000

Had also a look at Denuvo a while ago. Used LLVM to remove the x86 obfuscation and broke it down to VM-Opcodes. Atleast back then, Denuvo seemd to translate gamecode into a stackmachine.

This is how a VM push looks like:

      temp[0]=add(mem[e268], fffffffffffffff8)
      mem[temp[0]]]=mem[e560]
      mem[e268]=temp[0]

(vmreg_e268 is stackpointer, its decremented and stored in tempreg, then the value of vmreg_e560 is copied to stackpointeraddr, then new stackpointervalue is written back)

But i quickly lost interest when it became MBA galore:

      temp[7]=sub(add(add(and(mem[ebe8], b2f7), 3fd8), xor(lshr(mem[ebe8], 1), 2684)), lshr(add(mem[ebe8], b2f8), 1))
      temp[d]=or(sub(sub(4ad, temp[7]), xor(and(shl(temp[7], 1), 95c), 95c)), 8000)
      temp[e]=lshr(temp[d], 1)
      temp[11]=lshr(add(temp[d], 8001), 1)
      mem[ebe8]=sub(xor(xor(temp[e], 3fff), temp[11]), shl(and(and(temp[e], 3fff), temp[11]), 1))

(looks like its doing some operation with a constant to vmreg_ebe8, but obfuscated by MBAs and most likely the result won't ever being used, so its just noise to drown out the real operations)

BTW: anyone aware of LLVM optimizer passimplementations that can deal with MBAs ?

New comment by yukIttEft in "Reverse engineering the 386 processor's prefetch queue circuitry"

yukIttEft — Sat, 10 May 2025 19:26:23 +0000

When are you going to implement the first electron-level 386 emulator?

New comment by yukIttEft in "Material Theme has been pulled from VS Code's marketplace"

yukIttEft — Wed, 26 Feb 2025 09:12:54 +0000

> We do not plan to add a permission model in the next 6 months.

I guess Copilot functionality trumps "Security above all else" now.

https://blogs.microsoft.com/blog/2024/05/03/prioritizing-sec...

New comment by yukIttEft in "Notes on OpenAI's new o1 chain-of-thought models"

yukIttEft — Fri, 13 Sep 2024 16:24:38 +0000

Makes me wonder if "I don't know" could be added to LLM: whenever an activation has no clear winner value (layman here), couldn't this indicate low response quality?

New comment by yukIttEft in "Intel SGX Fuse Key0, a.k.a. Root Provisioning Key Was Extracted by Researchers"

yukIttEft — Tue, 27 Aug 2024 06:48:24 +0000

I thought microcode was encrypted, how do they have its disasm? https://xcancel.com/pic/orig/media%2FGV7BLfeXsAEJ6HC.png

New comment by yukIttEft in "AMD's "Peano" – An LLVM Compiler for Ryzen AI NPUs"

yukIttEft — Sun, 09 Jun 2024 06:58:07 +0000

Generally speaking, AI Engine processors are in-order, exposed-pipeline VLIW processors. Each VLIW instruction bundle specifies the behavior of one or more functional units, which begin executing a new instruction at the same time. The processor pipeline does not include stall logic to enforce data dependencies, and instructions will continue executing in order regardless of other instructions in the pipeline. As a result, the compiler is able to schedule machine instructions which access the same register in ways that potentially overlap

So a software scheduler? I had no idea it works like this. Very interesting.

New comment by yukIttEft in "C++ Insights – See your source code with the eyes of a compiler"

yukIttEft — Sat, 06 Apr 2024 12:44:15 +0000

This is very helpful, thx.

New comment by yukIttEft in "C++ Insights – See your source code with the eyes of a compiler"

yukIttEft — Sat, 06 Apr 2024 04:46:52 +0000

I wish there was a way to show the code that is generated when using co_return or co_await

e.g. https://cppinsights.io/lnk?code=Ly8gaHR0cHM6Ly93d3cuc2NzLnN0...

New comment by yukIttEft in "How does Single Sign-On (SSO) work?"

yukIttEft — Mon, 25 Mar 2024 17:53:35 +0000

newbie question: in https://substackcdn.com/image/fetch/f_auto,q_auto:good,fl_pr... What is the point of step 8/9? Couldn't a wrong password already be rejected in step 5/6?

New comment by yukIttEft in "Intel Gaudi2 chips outperform Nvidia H100 on diffusion transformers"

yukIttEft — Mon, 11 Mar 2024 17:14:36 +0000

I'm wondering how AI scientists work these days. Do they really hack Cudakernels or do they plug models together with highlevel toolkits like pytorch?

Considering its the latter, considering pytorch takes care of providing optimized backends for various hardwares, how big of a moat is Cuda then really?

New comment by yukIttEft in "Comments Are Code (2018)"

yukIttEft — Fri, 08 Mar 2024 07:49:36 +0000

I like to think that asserts are a form of active documentation

New comment by yukIttEft in "Microsoft actions following attack by nation state actor Midnight Blizzard"

yukIttEft — Sat, 20 Jan 2024 09:55:46 +0000

From the same company that charges you to access your logfiles.

https://www.theregister.com/2023/07/20/under_cisa_spressures...

New comment by yukIttEft in "Samsung extends Android and security updates to 7 years"

yukIttEft — Thu, 18 Jan 2024 07:47:06 +0000

I mean, do they even have to do more than run "make image" after rebasing to a new (minor) kernel update ?