manuel 🦋 @manuelbernhardt

still one of the best guides

Types of Distributed Systems Papers. Joke modeled after @xkcd 's xkcd.com/2456/ #distributedsystems #distributedsystemsjokes

I finally had a chance to rearrange my Pi5 cluster today. For the compute-only Pi5s (fan only, no USB/PCIe/NVMe), I got rid of the official Pi5 power supplies and replaced them with Anker PowerPort 6, which is common for Pi clusters. One of the reasons was that no matter what I did, the Pi5s didn't go beyond 9W of power consumption (3W idle). So, the official Pi5 power supply was overkill for my use case. Although the Anker PowerPort can handle 60W, I decided to be a good citizen and only connected 4 Pi5s to each unit, leaving plenty of extra overhead. By the way, they are connected to two different switches. 😅 While looking for some cables, I found my old AC Infinity fans, which I used to cool an Xbox. I thought, why not, and set them up to cool the power supplies. The fans have a thermal trigger, so they only run once the temperature goes beyond ~29°C/84F. By the way, I asked ChatGPT how to position the fans, and it suggested the push-pull configuration. I was skeptical at first, but it seems to work well. See the temperature in the image below. Let me know if there is a better way. Finally, I got these fancy USB-C cables that show the current power consumption. I like them and hope they last long enough since they are not cheap. 💸 P.S.: I'm still waiting for the official Raspberry Pi5 PoE HAT for my power-hungry Pi5s, which have NVMe disks. Let me know if you have any suggestions. #raspberrypi #pi5 #anker #usbc

Mon avis sur la décision de la CNIL

Fearless concurrency with #Rust, cats and a few #RaspberryPI-s manuel.bernhardt.io/posts/2024-01-…

This is how I save over $1000/mo on compute, storage, and bandwidth costs for my AI side projects: a total of 52 CPU cores, 104GB RAM, 3TB NVMe, unlimited ingress/egress, and less than 100W power consumption. The taller cluster runs API servers built with the Transformer.js library and the NATS services framework. The shorter cluster runs a Postgres database server (with streaming replication) and some services such as pgpool, prometheus, etc. They are all connected to the cloud via NATS using a secure WireGuard tunnel. No DNS server, no port forwarding, no load balancers. #raspberrypi #pi5 #AI #edge @nats_io @xenovacom @PineberryPi

Building a cat litter box reminder with #rust manuel.bernhardt.io/posts/2024-01-…

New article: On pinning and isolating CPU cores manuel.bernhardt.io/posts/2023-11-…

ppl keep asking me how we can get more women into neteng so i just made a commercial for it. sexism in tech is now solved you’re welcome

#Aeron Version 1.41.0 released! Whats new? Enhanced support for 24/7 operation of Aeron Cluster, improved Cloud support, enhanced usability of Aeron Archive, upgrades & bug fixes. More on Github: eu1.hubs.ly/H03tDdr0 #softwarerelease #newfeatures #tradingtech #lowlatency

So much for "free speech", @elonmusk (hachyderm is a mastodon server)

Twitter has stopped paying rent on its offices and is considering not funding severance packages as it appears to gear up for legal battles. nyti.ms/3VTZPqU

@mrt1nz So then let's use social media as the prompt

Prompting generative models feels similarly addictive as spending/burning time on social media

@nitsanw @manuel" target="_blank" rel="nofollow noopener">hachyderm.io/@manuel

Where'd everybody go?

RIP Fred Brooks. I read MMM in 1988 and it was eye opening. Many of the lessons still ring true today.

@aboutgeo one important bit of news: Twitter is imploding. Key systems without engineers left to tend to them, remote work forbidden and offices closed at the same time - looks a lot like Musk wants to burn the place down for good

In the light of the latest news regarding Twitter, I’m reposting my mastodon whereabouts: @manuel@hachyderm.io @manuel" target="_blank" rel="nofollow noopener">hachyderm.io/web/@manuel

@Fox0x01 if you put your mastodon handle in your Twitter profile, there are tools that pick those up & make it easier for people to follow on the other side

So y’all are telling me that Twitter is burning down just a few weeks before the announcement of my book pre-sale? *sigh*