I posed this on another subreddit but I thought I might have better luck here.

Hello!! I am a second year student studying I Japan for computer engineering and the stuff we do in school is all software engineering based but I’m all honesty I’ve never found that stuff particularly fun tbh. I started computer things because I love low level programming but more specifically IC design. On the past a made a simple 16 bit CPU and assembly to run real time on my computer all by myself aswell as a crappy raspberry PI operating system but I wanna learn more about more advance subjects things like parallelism, SIMD, shared memory, FPUs, in addition to stuff like computer cluster operating systems. My issue is I’m having trouble finding information to learn about this stuff because it’s legit sooo fricken cool and I wanna make some dumb stuff like perhaps designing my own Vector logic unit from logic gates or make my own mini supercomputer operating system and data manager from raspberry pis. Any help would be so amazing thank you for your time!!

Also if anyone also likes this stuff and wants to be friends dm me I’d love to meet people o can geek out with!!

Has any1 come across a youtuber by the name Sphaerophoria?? Recently came across his channel and he's beyond insane. I know this will sound crazy but how can I be like him, in terms of the amount of the amount of information he knows.

Hello everyone! I’m working on something related to low-level programming and systems programming. I’d like to find a community or a person who shares a passion for this area so I can follow and explore more. Can anyone recommend a group or community like that?

I am a third year university student and want to make my career in low-level and systems programming ...can someone from the industry share a roadmap to follow ??

I've recently got to know how BGP speakers work and I want to make my own implementation in Rust.

How do I start? What things should I implement? How to split this big task to little subtasks?

I'm a little stuck & would absolutely appreciate any help >__<

I've been running some performance tests on a single-threaded workload using stress-ng and monitoring the results with perf stat. I noticed that binding the process to a specific CPU core using taskset results in significantly more cache misses compared to running it without setting CPU affinity. Example:

Without affinity:

• Migrations: 1
• Context-switches: 1
• Cache Misses: 10,010
• Cache Miss Rate: 31.376%
• Cycles: 1,796,855
• Instructions: 2,385,959

With taskset -c 20:

• Migrations: 0
• Contex-switches: 1
• Cache Misses: 13,029
• Cache Miss Rate: 65.840%
• Cycles: 2,495,645
• Instructions: 2,539,112

Run script example:

taskset -c 20 stress-ng --cpu 1 --cpu-load 100 --timeout 12s &
PROCESS_PID=$!
sudo perf stat -e migrations,context-switches,cache-misses,cycles,instructions,cache-references -p $PROCESS_PID

The core 20 is aribrary (I checked others), free, not isolated.

Any ideas why I get more cache misses when isolate workload? I'd expect rather less cache misses.

OS: Ubuntu 20.04

CPU: Intel Core i9-10980XE, no NUMA.

Thanks!

Hello,

I graduated with a bachelor's and master's degree in computer science. I have been working as a professional backend developer for about 2 years. I work with Java and Spring boot at work. But what I have wanted to do since my childhood is to work with languages ​​such as C/C++/Assembly. Do you think I should or can I work as an embedded developer? I am 25 years old and I already have advanced knowledge of C and C++. Am I too late for such a domain change or is it right to switch to embedded development just to work in C? Thank you very much in advance for your answers.

Posting here to see if anyone knows of any documentation for the DS-01 compression algorithm. This is a legacy compression algorithm for DMSDOS compressed FAT filesystems.

I have the emails from one "pali" who wrote the only DS-01 decompression implementation I can find.

I really got no idea. Can you guys give me some discord servers, groups, etc.

Or dm me if you want to :D

So the IEEE club of my university offered me to do do a research and lead a research team on any subject. The common topic for research would be AI and ML but i have decent knowledge of reverse engineering and low level stuff so i wanted to work on this subject rather than AI and ML.

So i am looking for suggestions on what unique thing I can explore and research in reverse engineering. I searched online and most of the stuff related to RE is related to malware analysis, I am also open for that idea but I first need to know my goal exactly so here I am asking for help from reddit gods. I have experience with exploring malicious stuff with volatility but again I want something unqiue with a good learning outcome so that the paper actually gets published.

One idea that has been in my mind was on reverse engineering self modifying binaries, but just analysis binaries with a RE framework won't be enough so I wanted to extend this by adding some more things into it like if I have a binary that injects shellcode during runtime and then modifies that shellcode etc etc. So pls suggestions are welcomed.

Trying to learn how this works, is it possible to decrypt it somehow and turn it back to text?

Received: from 10.196.198.206
 by atlas104.sbc.mail.bf1.yahoo.com with HTTPS; Thu, 17 Mar 2022 11:53:52 +0000
Return-Path: <*** Email address is removed for privacy ***>
X-Originating-Ip: [52.234.172.104]
Received-SPF: pass (domain of microsoft.com designates 52.234.172.104 as permitted sender)
Authentication-Results: atlas104.sbc.mail.bf1.yahoo.com;
 dkim=pass header.i=@microsoft.com header.s=s1024;
 spf=pass smtp.mailfrom=microsoft.com;
 dmarc=pass(p=REJECT) header.from=microsoft.com;
X-Apparently-To: *** Email address is removed for privacy ***; Thu, 17 Mar 2022 11:53:52 +0000
X-YMailISG: ..0BlFQWLDsnrF59SLN_NDjh3FFmpir0aJBc.r7Sl.MEJL8F
 hjaHo80k0lMmKeBwRrHd9gwu3_jse2_Zk4B4XeDNCOxsFUFNIG9DsuzKrjpz
 bNxWDwNxlqT9FyilZDyrEoILG_UF8jeIzdTnlWMv6CIhTbQu7I8dhToGdCol
 dKWUgiRUXmRIY0JFM7BskQ2A3IhJ0ovVCXIRucwj6X66HcxryAFrGAOebAhz
 3agQI0wHhNevR8cNv7KG.ajqsxw7sYQDAR5dZf7Cfo2mjvLS66OTa9f96Zz5
 DEiu24xKi9bq6Iytv2b5Jw9bJo_Mjqhd9ysl6EHFu6qU0sUdFF96rFjAviH1
 oTy.6wpcbdEegPcP5IubsaRyWmTc6Sw3wQSPYf2jzI1DP7Apla.Wgh691lAD
 SgZiY89H9B.8vM4jeSyOWgejN1.EoAfn.Ua.mOoByCRwIgNju770AU2CU1Td
 PTvum3GW_9seAiVnoLopODiQqGowu71X2AheqRta0JBVXfflu9lwnt83mq1W
 MkLwEKxNK619ZbQPPSf3ULLAKEL6eB.X83EbVVQQoedSHUBj6J945Vrfm8f9
 Vhh1CS0yoGeraA53KfFn38DezBTGj4qDLVI2wYX7uajQ6JQWcocFmGddRonU
 OGRWom27vm92hw4y5aOsw7dP_OkPTqoHhDBBEG6.vpjps_z29Bj3xQDlp30u
 SeO8fAjQzf3DMidWQbNzyxmJAKEGpdZxtT.54aiB5MKqBpyjYaumqfZu_h_c
 Cv9dW5rv95XI1reQ9OJIOrdg1NZr7fYboP_DLMt51YAJTHeLx_oLlHyy6ZQz
 dA_O6GRGlKiq7rGWwdRVoKYEgjp3B.YDFWbLtf1UDBKzQbgDA.JUEpxzxa09
 vGeGSHEeGXgOpCvGY8g6ofDjM1xsphL3De2QFEgkHubcM0ndCweXjyZz_z06
 EaHnx4qyEvAiKpSpazCsjUzTnSFWDtWeDqov5_y_g4AxfGG1trlRbujZNRgW
 XR342GEmAqNbM_BafuiWgVj_hiRaWo63eRgb5zgyhAERsGZKPxjdh4RO1Lmb
 brHn4L.ifUxOhC.zQ814w4S23GwLxe1Jua2z7uriGhmXPaB3b1da4PEIvxMi
 jk4WRpHHpObwwCc.x56C97ra7N5WKQtsKRljczFgGaG3ja6e.bxaD7QyFq72
 XWc-