Meetups/Infra/2024-09-30

(Preamble:

   = Meetup - Infra =
   https://www.noisebridge.net/wiki/Meetups/Infra
   https://www.noisebridge.net/wiki/Meetups/Infra/2024-..-.. )

2024-09-30m Meetups/Infra

(TODO summary)

Introductions

• [name] - [background]. [goals for meetup, or interests to explore]

name / work or homelab / one word topic today (as yet unused)

• Loren - working on arduino version of access control system, hackercoordinator software stack. , infrastructure
• Kevin - working on homelab, dockerizing/containerizing, computers
• Doug [doug.edmonds at nospam decasim.com]- working on side projects, porting some code into jax, deeply frustrating, deeply satisfying
• Kevin - working on python things, some infra some distributed computing problems, collaboration; Discord: mister_name, Twitter/X: @kev, mister.namester at nospam gmail.com
• Greg - thinking about git-repo-related things, esoterick
• Sophia - thinking about the english civil war, Charles has been executed, HDMI
• Jake - working on chess move evaluation, most recently re-organzing for speed, really good at large N not at small, (non-technicial skills that others find useful) [@smilodonedentulus on Discord]
• Wolf - he/him - main thing done in the last few weeks: refactor my search engine to use file system extended attributes (mailto:noisebridge at nospam wolf.codes, @quickgreywolf on Discord)
• Verda - working on an application for 3d printing: designers, users, buyers -- to route to closest printer when orderd, thinking about rails
• Michael [discord: mb138] working on gpu frame corruption, - question: CTF stuff, networking boils down to socket api, -
• [name: Leilani; discord: leiloons; email: leilanivquesada at nospam gmail.com] - DDI engineer (DNS, DHCP, IPAM), wants to learn more about infrastructure beyond DDI and share knowledge where she can
• Farley - used to do infra stuff, nothing focus on, interesting
• Corey - friends brought me here, user interfaces

OSI model- 7 Layers 7- Application 6- Presentation 5- Session 4-Transport- TCP/UDP 3- Network Layer 2- Data Link Layer 1- Physical Layer

IP- Internet Protocol TCP- Transmission Control Protocol/UDP- User Datagram Protocol- Q: Why does UDP still exist? A: What else would be used in its place? HTTP-

• • • Watch Google talk about BBR

What is BBR? BBR = Bottleneck Bandwidth and Round-trip propagation time. BBR seeks high tput with small queue by probing BW and RTT sequentially.

What is Mosh? mobile shell - https://mosh.org/

https://en-wp.org/wiki/QUIC

DNS- Domain Name Service What is DNS name (fully qualified domain name) to IP mapping = A record IP to name mapping = PTR record alias records are CNAMEs

Who controls the root servers? Internet Corporation for Assigned Names and Numbers (ICANN): Operates servers for one of the 13 IP addresses in the root zone

What is www WorldWide Web

IPv4 vs IPv6

IETF- Internet Engineering Task Force RFCs (requests for comment)

• • • homework- read an RFC before next week ***

Does anyone want to

Lesson or Demo

• Read aloud: clarify for meetup. We are taking notes in a riseup pad (or I am--help appreciated, and links). We have meeting notes posted to the wiki. noisebridge.net, search Infra, or Meetups/Infra. (the Infrastructure page has a disambiguation link.)
• Shell, web services, self-hosting, networking!

What's up at work? In the homelab? - near an apartment building, air crowded with 2.4 and 5g

• Cryptography

Greg - quantum something websites

• Greg: Zero-Knowledge proof introduction (cryptography): https://zkintro.com/

• Post-quantum secure algorithms
  • Key Encapsulation vs ... ? shared key negotiation?

• Dwave - not a general purpose quantum computre
• Rigitti (Berkeley) -
• Google's San Diego
• AWS & IBM - quantum simulators & computers

(introductions)

Questions, Discussion, or Coworking

=== Outstanding:

• • Networking questions - networking boils down to socket api

wolf -- the wp:OSI Model is wrong, designed by committee, and never reflected reality

I recommend digging into wireshark.

• • of michael -- gpu frame dropping ?! -- tell us of memory pipelines

• • cryptography -- post-quantum & otherwise / loren
  • (non-technicial skills that others find useful) / jake

• Kevin - being about to express technicall things in a way people can understand
• Doug - speaking to unaffiliated many untechnical users -- listen, come up with new features
• Kevin -- collaboration with other developers
• Leilani - Growth mindset -- feedback, be fun to work with, don't need to know all the answers, just who knows the answers, don't take anything personal, let the ego go
• Steve - if you think you're morally opposed to something -- (except you might be scared or uncomfortable) -- e.g. frat/sorority, would never hang out. Grad school taught them, had artificial barrier -- now, can relate to them at the beach. Try something you think is outside / beyond / yourself
• Michael
• Corey
• Sophia -- sales -- give data sample, people disappear for 3 weeks. --- ? first neurotic interpretation?
• Jake - hitting the minimum technical bar, now soft skills -- working on -- oportunities for peers to grow skillset, signal boost their skills or projects
• Greg -- knowing what's important to work on at all. Unemployed, thinking about next job. Hamming quote -- Hamming question -- What's the most important problem in your field? Why aren't you working on it.?
• Wolf -- important, and difficult to get good at -- project management & prioritization, getting
• Loren - give others the opportunity to show off their skills, invite them to treat you how they'd like to be treated
• Verda -- tenaciousness, if you have something you want done -- do it until you figure it out. Make progress.
• Doug -- sales isn't what people think it is -- negotiating structuring a deal. Sales is getting to know people, relationships. Dale Carniege- asked others what was important to them and sat and listened.

Want to learn more about // or present on

• Verda -- asset pipelines, images
• Wolf - pass
• Greg - QUIC
• Jake -- networking, every week my answer, has not changed
• sophia -- under
• corey - skip
• michael -- networking
• Leilani - netowrking // talk about DHCP
• Steve - out of tech for a bit, was in AI. Using physics to understand what's going on in LLMs.
• Kevin - pass
• Doug -- more about code pipelines, gpu performance comparisions. perf / precision
• Kevin -- TLS RFC --

• [Issue]

For next time

Readings & Exercises

• Readings
• Exercises

Join online

• Try it yourself!
  • Join libera.chat #nb-meetup-infra

https://www.noisebridge.net/wiki/Meetups/Infra