Stefan Lasiewski
@stefanlasiewski.bsky.social
Daddy, bicyclist, Kubernetes/Container/Linux system engineer @NERSC & @BerkeleyLab, geek, maker & breaker of things in Berkeley, CA.
Reposted by Stefan Lasiewski
Trains are not stopping at 12th St. Oakland City Center Station in the Antioch and Richmond directions due to a medical emergency. Trains are able to run through and continue on to 19th Street. Trains in the SF and Berryessa directions are still making stops at 12th Street.
November 6, 2025 at 1:57 AM
Trains are not stopping at 12th St. Oakland City Center Station in the Antioch and Richmond directions due to a medical emergency. Trains are able to run through and continue on to 19th Street. Trains in the SF and Berryessa directions are still making stops at 12th Street.
I love Linux.
* Data storage: "flushing" typically means syncing in-memory data to permanent storage, like disk
* Data caching: "flushing" usually means clearing the cache
* Lunux Host Firewall (iptables, netfilter), "flushing" means deleting all the rules & exposing your host to the internet
* Data storage: "flushing" typically means syncing in-memory data to permanent storage, like disk
* Data caching: "flushing" usually means clearing the cache
* Lunux Host Firewall (iptables, netfilter), "flushing" means deleting all the rules & exposing your host to the internet
October 29, 2025 at 10:16 PM
I love Linux.
* Data storage: "flushing" typically means syncing in-memory data to permanent storage, like disk
* Data caching: "flushing" usually means clearing the cache
* Lunux Host Firewall (iptables, netfilter), "flushing" means deleting all the rules & exposing your host to the internet
* Data storage: "flushing" typically means syncing in-memory data to permanent storage, like disk
* Data caching: "flushing" usually means clearing the cache
* Lunux Host Firewall (iptables, netfilter), "flushing" means deleting all the rules & exposing your host to the internet
A preview of some discussions during November conferences:
#KubeCon: I CAN’T BELIEVE PEOPLE STILL USE NFS!
#SC25 #Supercomputing: WOW! NFS is still AWESOME. Vast is THE BOMB! NFS Azure file shares works great!
#KubeCon: I CAN’T BELIEVE PEOPLE STILL USE NFS!
#SC25 #Supercomputing: WOW! NFS is still AWESOME. Vast is THE BOMB! NFS Azure file shares works great!
October 22, 2025 at 11:53 PM
A preview of some discussions during November conferences:
#KubeCon: I CAN’T BELIEVE PEOPLE STILL USE NFS!
#SC25 #Supercomputing: WOW! NFS is still AWESOME. Vast is THE BOMB! NFS Azure file shares works great!
#KubeCon: I CAN’T BELIEVE PEOPLE STILL USE NFS!
#SC25 #Supercomputing: WOW! NFS is still AWESOME. Vast is THE BOMB! NFS Azure file shares works great!
Felt earthquake in Berkeley.
October 16, 2025 at 4:25 PM
Felt earthquake in Berkeley.
The sign is gone, but it's one of my historical favorites.
October 5, 2025 at 12:11 AM
The sign is gone, but it's one of my historical favorites.
Some sorta fighter jet flew over Berkeley. I didn't see what direction it went, but I think this might be it? Maybe 3 jets.
globe.adsbexchange.com?icao=~2b0c2f
globe.adsbexchange.com?icao=~2b0c2f
September 6, 2025 at 9:57 PM
Some sorta fighter jet flew over Berkeley. I didn't see what direction it went, but I think this might be it? Maybe 3 jets.
globe.adsbexchange.com?icao=~2b0c2f
globe.adsbexchange.com?icao=~2b0c2f
Every interaction with AI:
---
Me: Hello AI Agent, what is my favorite color?
AI: Your favorite color is green
Me: No actually, my favorite color is blue
AI: Perfect! Please continue with blue. Green grass is lovely.
Me: What? No, I said blue.
AI: YOU ARE CORRECT. Thanks for pointing out my mistake
---
Me: Hello AI Agent, what is my favorite color?
AI: Your favorite color is green
Me: No actually, my favorite color is blue
AI: Perfect! Please continue with blue. Green grass is lovely.
Me: What? No, I said blue.
AI: YOU ARE CORRECT. Thanks for pointing out my mistake
September 3, 2025 at 12:15 AM
Every interaction with AI:
---
Me: Hello AI Agent, what is my favorite color?
AI: Your favorite color is green
Me: No actually, my favorite color is blue
AI: Perfect! Please continue with blue. Green grass is lovely.
Me: What? No, I said blue.
AI: YOU ARE CORRECT. Thanks for pointing out my mistake
---
Me: Hello AI Agent, what is my favorite color?
AI: Your favorite color is green
Me: No actually, my favorite color is blue
AI: Perfect! Please continue with blue. Green grass is lovely.
Me: What? No, I said blue.
AI: YOU ARE CORRECT. Thanks for pointing out my mistake
San Francisco Bart tunnel is SHUT DOWN. No transbay service at all.
August 30, 2025 at 1:41 AM
San Francisco Bart tunnel is SHUT DOWN. No transbay service at all.
Berkeley cyclist here- use new Bancroft cycletrack weekly. Wrote to city about westbound light @ Bancroft/Shattuck not detecting bikes. City uses AI system called NoTraffic w/ these cameras & is working on bugs. Will be interesting when it works
🚴♀️ I believe these are the cameras.
notraffic.com
🚴♀️ I believe these are the cameras.
notraffic.com
August 28, 2025 at 1:27 AM
Berkeley cyclist here- use new Bancroft cycletrack weekly. Wrote to city about westbound light @ Bancroft/Shattuck not detecting bikes. City uses AI system called NoTraffic w/ these cameras & is working on bugs. Will be interesting when it works
🚴♀️ I believe these are the cameras.
notraffic.com
🚴♀️ I believe these are the cameras.
notraffic.com
One oddity in the AI experience is the inconsistency in the experience. Gemini on my phone fails ~20% of the time, claiming it can't do something that is clearly within it's scope.
Today, I tried to set an alarm. Two tries, back to back, two different answers.
Today, I tried to set an alarm. Two tries, back to back, two different answers.
August 28, 2025 at 1:09 AM
One oddity in the AI experience is the inconsistency in the experience. Gemini on my phone fails ~20% of the time, claiming it can't do something that is clearly within it's scope.
Today, I tried to set an alarm. Two tries, back to back, two different answers.
Today, I tried to set an alarm. Two tries, back to back, two different answers.
Ubuntu users like to make fun of the Blue Screen of Death in Windows. But hey, Ubuntu has it's own White Screen of Death.
I have two identical machines. One Windows 10 & other Ubuntu 24.04. Ubuntu crashes more
Linux on servers: Awesome- I run hundreds of them
Linux on desktop: Not quite as awesome
I have two identical machines. One Windows 10 & other Ubuntu 24.04. Ubuntu crashes more
Linux on servers: Awesome- I run hundreds of them
Linux on desktop: Not quite as awesome
August 28, 2025 at 12:58 AM
Ubuntu users like to make fun of the Blue Screen of Death in Windows. But hey, Ubuntu has it's own White Screen of Death.
I have two identical machines. One Windows 10 & other Ubuntu 24.04. Ubuntu crashes more
Linux on servers: Awesome- I run hundreds of them
Linux on desktop: Not quite as awesome
I have two identical machines. One Windows 10 & other Ubuntu 24.04. Ubuntu crashes more
Linux on servers: Awesome- I run hundreds of them
Linux on desktop: Not quite as awesome
Helicopters over Berkeley near Ohlone Park (Deleware/Hearst & MLK)
Police chase, medical emergency, several suspects running.
FYI @berkeleyscanner.com
Police chase, medical emergency, several suspects running.
FYI @berkeleyscanner.com
August 27, 2025 at 11:28 PM
Helicopters over Berkeley near Ohlone Park (Deleware/Hearst & MLK)
Police chase, medical emergency, several suspects running.
FYI @berkeleyscanner.com
Police chase, medical emergency, several suspects running.
FYI @berkeleyscanner.com
TOML == ye*T* an*O*ther Markup Language
August 27, 2025 at 5:49 PM
TOML == ye*T* an*O*ther Markup Language
Hey Kubecon folks, want to save $$$ on your Atlanta hotel room? Try searching for rooms with your browser in incognito mode. Some prices were reduced by $30/night, sometimes more. Helped me to find more options under per diem limit.
#kubecon #CloudNativeCon
#kubecon #CloudNativeCon
August 15, 2025 at 11:09 PM
Hey Kubecon folks, want to save $$$ on your Atlanta hotel room? Try searching for rooms with your browser in incognito mode. Some prices were reduced by $30/night, sometimes more. Helped me to find more options under per diem limit.
#kubecon #CloudNativeCon
#kubecon #CloudNativeCon
Reposted by Stefan Lasiewski
🚀 Heading to #KubeCon || #CloudNativeCon North America 🇺🇸 in Atlanta 10-13 November ⁉️
🥳 I have a discount code for you: ABDEL for 30% off the current prices 🥳
⚠️ Only available for All-Access and KubeCon + CloudNativeCon Passes
⚠️ Code expires on August 26!
events.linuxfoundation.org/kubecon-clou...
🥳 I have a discount code for you: ABDEL for 30% off the current prices 🥳
⚠️ Only available for All-Access and KubeCon + CloudNativeCon Passes
⚠️ Code expires on August 26!
events.linuxfoundation.org/kubecon-clou...
Register | LF Events
Register Now! The registration deadline is 11:59 PM Eastern Time on the respective date. The registration deadline is 11:59 PM Eastern Time on the respective date. All-Access Pass: This pass type…
events.linuxfoundation.org
August 13, 2025 at 4:40 PM
🚀 Heading to #KubeCon || #CloudNativeCon North America 🇺🇸 in Atlanta 10-13 November ⁉️
🥳 I have a discount code for you: ABDEL for 30% off the current prices 🥳
⚠️ Only available for All-Access and KubeCon + CloudNativeCon Passes
⚠️ Code expires on August 26!
events.linuxfoundation.org/kubecon-clou...
🥳 I have a discount code for you: ABDEL for 30% off the current prices 🥳
⚠️ Only available for All-Access and KubeCon + CloudNativeCon Passes
⚠️ Code expires on August 26!
events.linuxfoundation.org/kubecon-clou...
Reposted by Stefan Lasiewski
KubeCon is coming to my home town, Atlanta, GA, in November from the 10th to the 13th, so it's only right I get a discount code for anyone looking to attend.
Use code KELSEY20 for 20% off. events.linuxfoundation.org/kubecon-clou...
Use code KELSEY20 for 20% off. events.linuxfoundation.org/kubecon-clou...
August 11, 2025 at 11:29 PM
KubeCon is coming to my home town, Atlanta, GA, in November from the 10th to the 13th, so it's only right I get a discount code for anyone looking to attend.
Use code KELSEY20 for 20% off. events.linuxfoundation.org/kubecon-clou...
Use code KELSEY20 for 20% off. events.linuxfoundation.org/kubecon-clou...
The Arch wiki is top notch. Good to see this cooperation with Debian.
BTW I used the Arch wiki
Distro's like Ubuntu needs to follow suit. The Ubuntu wiki is full of bad information & harmful to the community.
lwn.net/SubscriberLi...
BTW I used the Arch wiki
Distro's like Ubuntu needs to follow suit. The Ubuntu wiki is full of bad information & harmful to the community.
lwn.net/SubscriberLi...
Arch shares its wiki strategy with Debian
The Arch Linux project is especially well-known in the Linux community for two things: its roll [...]
lwn.net
August 14, 2025 at 3:15 PM
The Arch wiki is top notch. Good to see this cooperation with Debian.
BTW I used the Arch wiki
Distro's like Ubuntu needs to follow suit. The Ubuntu wiki is full of bad information & harmful to the community.
lwn.net/SubscriberLi...
BTW I used the Arch wiki
Distro's like Ubuntu needs to follow suit. The Ubuntu wiki is full of bad information & harmful to the community.
lwn.net/SubscriberLi...
SF fireworks at 11:30pm? SF Is like the Bay Area's upstairs neighborhood who just won't go to sleep
August 3, 2025 at 6:26 AM
SF fireworks at 11:30pm? SF Is like the Bay Area's upstairs neighborhood who just won't go to sleep
Friends on the US West Coast: Tsunami Watch is in effect for US & Canadian West Coast. Nothing to do right now but to be aware. Be on the lookout for Tsunami advisory or warning.
tsunami.gov/events/PAAQ/...
tsunami.gov/events/PAAQ/...
tsunami.gov
July 30, 2025 at 12:37 AM
Friends on the US West Coast: Tsunami Watch is in effect for US & Canadian West Coast. Nothing to do right now but to be aware. Be on the lookout for Tsunami advisory or warning.
tsunami.gov/events/PAAQ/...
tsunami.gov/events/PAAQ/...
July 30, 2025 at 12:11 AM
My fingers typed the Vim exit command into the AI Chatbot window and it acted appropriately.
July 12, 2025 at 1:28 AM
My fingers typed the Vim exit command into the AI Chatbot window and it acted appropriately.
Wow these two helicopters were flying pretty low over Berkeley. Looks like 500' altitude?
globe.adsbexchange.com?icao=ae2694
globe.adsbexchange.com?icao=ae2694
July 8, 2025 at 5:00 PM
Wow these two helicopters were flying pretty low over Berkeley. Looks like 500' altitude?
globe.adsbexchange.com?icao=ae2694
globe.adsbexchange.com?icao=ae2694
Apart from the Oakland warehouse fire on E 8th Street, there's another big smoky fire in Alameda? Just drove down 880 S & saw a big smoky fire that definitely wasn't on E 8th.
July 5, 2025 at 2:45 AM
Apart from the Oakland warehouse fire on E 8th Street, there's another big smoky fire in Alameda? Just drove down 880 S & saw a big smoky fire that definitely wasn't on E 8th.
Reposted by Stefan Lasiewski
NERSC just announced that IBM and VAST have been selected as the storage providers for the upcoming Doudna #HPC system. Strong statement since NERSC had long invested in Lustre (scratch) and GPFS (community). Very cool to see NERSC not settling for the status quo.
www.nersc.gov/news-and-eve...
www.nersc.gov/news-and-eve...
Doudna Supercomputer to Feature Innovative Storage Solutions for Simulation, Data, and AI | NERSC
The upcoming Doudna supercomputer at the National Energy Research Scientific Computing Center (NERSC) will partner next-generation high performance computing (HPC) capabilities with cutting-edge data storage solutions to meet the rapidly…
www.nersc.gov
July 2, 2025 at 5:58 PM
NERSC just announced that IBM and VAST have been selected as the storage providers for the upcoming Doudna #HPC system. Strong statement since NERSC had long invested in Lustre (scratch) and GPFS (community). Very cool to see NERSC not settling for the status quo.
www.nersc.gov/news-and-eve...
www.nersc.gov/news-and-eve...